Živković, Luka

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orcid::0000-0002-0619-7129
  • Živković, Luka (11)
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Author's Bibliography

Nonlinear frequency response analysis: a recent review and perspectives

Vidakovic-Koch, Tanja; Milicic, Tamara; Živković, Luka; Chan, Hoon Seng; Krewer, Ulrike; Petkovska, Menka

(2021)

TY  - JOUR
AU  - Vidakovic-Koch, Tanja
AU  - Milicic, Tamara
AU  - Živković, Luka
AU  - Chan, Hoon Seng
AU  - Krewer, Ulrike
AU  - Petkovska, Menka
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4842
AB  - The nonlinear frequency response analysis (NFRA) can be seen as an extension of electrochemical impedance spectroscopy. NFRA gives a full and detailed representation of the system response and can establish a connection between model parameters and the experimentally observed phenomena. In this article, different theoretical NFRA approaches and the most recent application examples are discussed. A simple electrochemical example is used to showcase the benefits and disadvantages of analyzing the system response by using different approaches. In addition, it was shown how to extract experimental harmonic values and analyze them.
T2  - Current Opinion in Electrochemistry
T1  - Nonlinear frequency response analysis: a recent review and perspectives
VL  - 30
DO  - 10.1016/j.coelec.2021.100851
ER  - 
@article{
author = "Vidakovic-Koch, Tanja and Milicic, Tamara and Živković, Luka and Chan, Hoon Seng and Krewer, Ulrike and Petkovska, Menka",
year = "2021",
abstract = "The nonlinear frequency response analysis (NFRA) can be seen as an extension of electrochemical impedance spectroscopy. NFRA gives a full and detailed representation of the system response and can establish a connection between model parameters and the experimentally observed phenomena. In this article, different theoretical NFRA approaches and the most recent application examples are discussed. A simple electrochemical example is used to showcase the benefits and disadvantages of analyzing the system response by using different approaches. In addition, it was shown how to extract experimental harmonic values and analyze them.",
journal = "Current Opinion in Electrochemistry",
title = "Nonlinear frequency response analysis: a recent review and perspectives",
volume = "30",
doi = "10.1016/j.coelec.2021.100851"
}
Vidakovic-Koch, T., Milicic, T., Živković, L., Chan, H. S., Krewer, U.,& Petkovska, M.. (2021). Nonlinear frequency response analysis: a recent review and perspectives. in Current Opinion in Electrochemistry, 30.
https://doi.org/10.1016/j.coelec.2021.100851
Vidakovic-Koch T, Milicic T, Živković L, Chan HS, Krewer U, Petkovska M. Nonlinear frequency response analysis: a recent review and perspectives. in Current Opinion in Electrochemistry. 2021;30.
doi:10.1016/j.coelec.2021.100851 .
Vidakovic-Koch, Tanja, Milicic, Tamara, Živković, Luka, Chan, Hoon Seng, Krewer, Ulrike, Petkovska, Menka, "Nonlinear frequency response analysis: a recent review and perspectives" in Current Opinion in Electrochemistry, 30 (2021),
https://doi.org/10.1016/j.coelec.2021.100851 . .
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Reactor conceptual design by optimization for hydrogen production through intensified sorption- and membrane-enhanced water-gas shift reaction

Živković, Luka; Pohar, Andrej; Likozar, Blaž; Nikačević, Nikola

(Pergamon-Elsevier Science Ltd, Oxford, 2020)

TY  - JOUR
AU  - Živković, Luka
AU  - Pohar, Andrej
AU  - Likozar, Blaž
AU  - Nikačević, Nikola
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4341
AB  - In this feasibility study, a novel industrial-scale reactor structure for continuous hydrogen production via intensified water-gas shift (WGS) reaction is proposed. It considers both trickling calcium-oxide sorbent for carbon dioxide removal (SOR) and Pd-based membrane for hydrogen separation (MEM). It is shown that WGS, SOR, MEM, and cooling can be decoupled with a special reactor superstructure mathematically represented with the pseudo-homogenous one-dimensional model. The final reactor structure and operating conditions are determined by using rigorous multi-objective optimization. Two objective functions take all main costs into account (total reactor volume and respective volumetric fractions for the catalyst, sorbent, and membrane) and the main benefit (hydrogen yield). The results show that the best cost-benefit relation can be achieved with the two-module reactor and combined WGS and SOR processes, with 95% carbon monoxide conversion (64% higher than the equilibrium conversion at the same conditions) and the outlet-stream containing only 0.7% of carbon dioxide.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Chemical Engineering Science
T1  - Reactor conceptual design by optimization for hydrogen production through intensified sorption- and membrane-enhanced water-gas shift reaction
VL  - 211
DO  - 10.1016/j.ces.2019.115174
ER  - 
@article{
author = "Živković, Luka and Pohar, Andrej and Likozar, Blaž and Nikačević, Nikola",
year = "2020",
abstract = "In this feasibility study, a novel industrial-scale reactor structure for continuous hydrogen production via intensified water-gas shift (WGS) reaction is proposed. It considers both trickling calcium-oxide sorbent for carbon dioxide removal (SOR) and Pd-based membrane for hydrogen separation (MEM). It is shown that WGS, SOR, MEM, and cooling can be decoupled with a special reactor superstructure mathematically represented with the pseudo-homogenous one-dimensional model. The final reactor structure and operating conditions are determined by using rigorous multi-objective optimization. Two objective functions take all main costs into account (total reactor volume and respective volumetric fractions for the catalyst, sorbent, and membrane) and the main benefit (hydrogen yield). The results show that the best cost-benefit relation can be achieved with the two-module reactor and combined WGS and SOR processes, with 95% carbon monoxide conversion (64% higher than the equilibrium conversion at the same conditions) and the outlet-stream containing only 0.7% of carbon dioxide.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Chemical Engineering Science",
title = "Reactor conceptual design by optimization for hydrogen production through intensified sorption- and membrane-enhanced water-gas shift reaction",
volume = "211",
doi = "10.1016/j.ces.2019.115174"
}
Živković, L., Pohar, A., Likozar, B.,& Nikačević, N.. (2020). Reactor conceptual design by optimization for hydrogen production through intensified sorption- and membrane-enhanced water-gas shift reaction. in Chemical Engineering Science
Pergamon-Elsevier Science Ltd, Oxford., 211.
https://doi.org/10.1016/j.ces.2019.115174
Živković L, Pohar A, Likozar B, Nikačević N. Reactor conceptual design by optimization for hydrogen production through intensified sorption- and membrane-enhanced water-gas shift reaction. in Chemical Engineering Science. 2020;211.
doi:10.1016/j.ces.2019.115174 .
Živković, Luka, Pohar, Andrej, Likozar, Blaž, Nikačević, Nikola, "Reactor conceptual design by optimization for hydrogen production through intensified sorption- and membrane-enhanced water-gas shift reaction" in Chemical Engineering Science, 211 (2020),
https://doi.org/10.1016/j.ces.2019.115174 . .
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Rapid Multi-Objective Optimization of Periodically Operated Processes Based on the Computer-Aided Nonlinear Frequency Response Method

Živković, Luka; Milić, Viktor; Vidaković-Koch, Tanja; Petkovska, Menka

(MDPI, Basel, 2020)

TY  - JOUR
AU  - Živković, Luka
AU  - Milić, Viktor
AU  - Vidaković-Koch, Tanja
AU  - Petkovska, Menka
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4439
AB  - The dynamic optimization of promising forced periodic processes has always been limited by time-consuming and expensive numerical calculations. The Nonlinear Frequency Response (NFR) method removes these limitations by providing excellent estimates of any process performance criteria of interest. Recently, the NFR method evolved to the computer-aided NFR method (cNFR) through a user-friendly software application for the automatic derivation of the functions necessary to estimate process improvement. By combining the cNFR method with standard multi-objective optimization (MOO) techniques, we developed a unique cNFR-MOO methodology for the optimization of periodic operations in the frequency domain. Since the objective functions are defined with entirely algebraic expressions, the dynamic optimization of forced periodic operations is extraordinarily fast. All optimization parameters, i.e., the steady-state point and the forcing parameters (frequency, amplitudes, and phase difference), are determined rapidly in one step. This gives the ability to find an optimal periodic operation around a sub-optimal steady-state point. The cNFR-MOO methodology was applied to two examples and is shown as an efficient and powerful tool for finding the best forced periodic operation. In both examples, the cNFR-MOO methodology gave conditions that could greatly enhance a process that is normally operated in a steady state.
PB  - MDPI, Basel
T2  - Processes
T1  - Rapid Multi-Objective Optimization of Periodically Operated Processes Based on the Computer-Aided Nonlinear Frequency Response Method
IS  - 11
VL  - 8
DO  - 10.3390/pr8111357
ER  - 
@article{
author = "Živković, Luka and Milić, Viktor and Vidaković-Koch, Tanja and Petkovska, Menka",
year = "2020",
abstract = "The dynamic optimization of promising forced periodic processes has always been limited by time-consuming and expensive numerical calculations. The Nonlinear Frequency Response (NFR) method removes these limitations by providing excellent estimates of any process performance criteria of interest. Recently, the NFR method evolved to the computer-aided NFR method (cNFR) through a user-friendly software application for the automatic derivation of the functions necessary to estimate process improvement. By combining the cNFR method with standard multi-objective optimization (MOO) techniques, we developed a unique cNFR-MOO methodology for the optimization of periodic operations in the frequency domain. Since the objective functions are defined with entirely algebraic expressions, the dynamic optimization of forced periodic operations is extraordinarily fast. All optimization parameters, i.e., the steady-state point and the forcing parameters (frequency, amplitudes, and phase difference), are determined rapidly in one step. This gives the ability to find an optimal periodic operation around a sub-optimal steady-state point. The cNFR-MOO methodology was applied to two examples and is shown as an efficient and powerful tool for finding the best forced periodic operation. In both examples, the cNFR-MOO methodology gave conditions that could greatly enhance a process that is normally operated in a steady state.",
publisher = "MDPI, Basel",
journal = "Processes",
title = "Rapid Multi-Objective Optimization of Periodically Operated Processes Based on the Computer-Aided Nonlinear Frequency Response Method",
number = "11",
volume = "8",
doi = "10.3390/pr8111357"
}
Živković, L., Milić, V., Vidaković-Koch, T.,& Petkovska, M.. (2020). Rapid Multi-Objective Optimization of Periodically Operated Processes Based on the Computer-Aided Nonlinear Frequency Response Method. in Processes
MDPI, Basel., 8(11).
https://doi.org/10.3390/pr8111357
Živković L, Milić V, Vidaković-Koch T, Petkovska M. Rapid Multi-Objective Optimization of Periodically Operated Processes Based on the Computer-Aided Nonlinear Frequency Response Method. in Processes. 2020;8(11).
doi:10.3390/pr8111357 .
Živković, Luka, Milić, Viktor, Vidaković-Koch, Tanja, Petkovska, Menka, "Rapid Multi-Objective Optimization of Periodically Operated Processes Based on the Computer-Aided Nonlinear Frequency Response Method" in Processes, 8, no. 11 (2020),
https://doi.org/10.3390/pr8111357 . .
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Computer-Aided Nonlinear Frequency Response Method for Investigating the Dynamics of Chemical Engineering Systems

Živković, Luka; Vidaković-Koch, Tanja; Petkovska, Menka

(MDPI, Basel, 2020)

TY  - JOUR
AU  - Živković, Luka
AU  - Vidaković-Koch, Tanja
AU  - Petkovska, Menka
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4437
AB  - The Nonlinear Frequency Response (NFR) method is a useful Process Systems Engineering tool for developing experimental techniques and periodic processes that exploit the system nonlinearity. The basic and most time-consuming step of the NFR method is the derivation of frequency response functions (FRFs). The computer-aided Nonlinear Frequency Response (cNFR) method, presented in this work, uses a software application for automatic derivation of the FRFs, thus making the NFR analysis much simpler, even for systems with complex dynamics. The cNFR application uses an Excel user-friendly interface for defining the model equations and variables, and MATLAB code which performs analytical derivations. As a result, the cNFR application generates MATLAB files containing the derived FRFs in a symbolic and algebraic vector form. In this paper, the software is explained in detail and illustrated through: (1) analysis of periodic operation of an isothermal continuous stirred-tank reactor with a simple reaction mechanism, and (2) experimental identification of electrochemical oxygen reduction reaction.
PB  - MDPI, Basel
T2  - Processes
T1  - Computer-Aided Nonlinear Frequency Response Method for Investigating the Dynamics of Chemical Engineering Systems
IS  - 11
VL  - 8
DO  - 10.3390/pr8111354
ER  - 
@article{
author = "Živković, Luka and Vidaković-Koch, Tanja and Petkovska, Menka",
year = "2020",
abstract = "The Nonlinear Frequency Response (NFR) method is a useful Process Systems Engineering tool for developing experimental techniques and periodic processes that exploit the system nonlinearity. The basic and most time-consuming step of the NFR method is the derivation of frequency response functions (FRFs). The computer-aided Nonlinear Frequency Response (cNFR) method, presented in this work, uses a software application for automatic derivation of the FRFs, thus making the NFR analysis much simpler, even for systems with complex dynamics. The cNFR application uses an Excel user-friendly interface for defining the model equations and variables, and MATLAB code which performs analytical derivations. As a result, the cNFR application generates MATLAB files containing the derived FRFs in a symbolic and algebraic vector form. In this paper, the software is explained in detail and illustrated through: (1) analysis of periodic operation of an isothermal continuous stirred-tank reactor with a simple reaction mechanism, and (2) experimental identification of electrochemical oxygen reduction reaction.",
publisher = "MDPI, Basel",
journal = "Processes",
title = "Computer-Aided Nonlinear Frequency Response Method for Investigating the Dynamics of Chemical Engineering Systems",
number = "11",
volume = "8",
doi = "10.3390/pr8111354"
}
Živković, L., Vidaković-Koch, T.,& Petkovska, M.. (2020). Computer-Aided Nonlinear Frequency Response Method for Investigating the Dynamics of Chemical Engineering Systems. in Processes
MDPI, Basel., 8(11).
https://doi.org/10.3390/pr8111354
Živković L, Vidaković-Koch T, Petkovska M. Computer-Aided Nonlinear Frequency Response Method for Investigating the Dynamics of Chemical Engineering Systems. in Processes. 2020;8(11).
doi:10.3390/pr8111354 .
Živković, Luka, Vidaković-Koch, Tanja, Petkovska, Menka, "Computer-Aided Nonlinear Frequency Response Method for Investigating the Dynamics of Chemical Engineering Systems" in Processes, 8, no. 11 (2020),
https://doi.org/10.3390/pr8111354 . .
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Evaluation of Electrochemical Process Improvement Using the Computer-Aided Nonlinear Frequency Response Method: Oxygen Reduction Reaction in Alkaline Media

Živković, Luka; Kandaswamy, Saikrishnan; Petkovska, Menka; Vidaković-Koch, Tanja

(Frontiers Media Sa, Lausanne, 2020)

TY  - JOUR
AU  - Živković, Luka
AU  - Kandaswamy, Saikrishnan
AU  - Petkovska, Menka
AU  - Vidaković-Koch, Tanja
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4446
AB  - The intensification of an electrochemical process by forced periodic operation was studied for the first time using the computer-aided Nonlinear Frequency Response method. This method enabled the automatic generation of frequency response functions and the DC components (Faradaic rectification) of the cost (overpotential) and benefit (current density) indicators. The case study, oxygen reduction reaction, was investigated both experimentally and theoretically. The results of the cost-benefit indicator analysis show that forced periodic change of electrode potential can be superior when compared to the steady-state regime for specific operational parameters. When the electrode rotation rate is changed periodically, the process will always deteriorate as the dynamic operation will inevitably lead to the thickening of the diffusion layer. This phenomenon is explained both from a mathematical and a physical point of view.
PB  - Frontiers Media Sa, Lausanne
T2  - Frontiers in Chemistry
T1  - Evaluation of Electrochemical Process Improvement Using the Computer-Aided Nonlinear Frequency Response Method: Oxygen Reduction Reaction in Alkaline Media
VL  - 8
DO  - 10.3389/fchem.2020.579869
ER  - 
@article{
author = "Živković, Luka and Kandaswamy, Saikrishnan and Petkovska, Menka and Vidaković-Koch, Tanja",
year = "2020",
abstract = "The intensification of an electrochemical process by forced periodic operation was studied for the first time using the computer-aided Nonlinear Frequency Response method. This method enabled the automatic generation of frequency response functions and the DC components (Faradaic rectification) of the cost (overpotential) and benefit (current density) indicators. The case study, oxygen reduction reaction, was investigated both experimentally and theoretically. The results of the cost-benefit indicator analysis show that forced periodic change of electrode potential can be superior when compared to the steady-state regime for specific operational parameters. When the electrode rotation rate is changed periodically, the process will always deteriorate as the dynamic operation will inevitably lead to the thickening of the diffusion layer. This phenomenon is explained both from a mathematical and a physical point of view.",
publisher = "Frontiers Media Sa, Lausanne",
journal = "Frontiers in Chemistry",
title = "Evaluation of Electrochemical Process Improvement Using the Computer-Aided Nonlinear Frequency Response Method: Oxygen Reduction Reaction in Alkaline Media",
volume = "8",
doi = "10.3389/fchem.2020.579869"
}
Živković, L., Kandaswamy, S., Petkovska, M.,& Vidaković-Koch, T.. (2020). Evaluation of Electrochemical Process Improvement Using the Computer-Aided Nonlinear Frequency Response Method: Oxygen Reduction Reaction in Alkaline Media. in Frontiers in Chemistry
Frontiers Media Sa, Lausanne., 8.
https://doi.org/10.3389/fchem.2020.579869
Živković L, Kandaswamy S, Petkovska M, Vidaković-Koch T. Evaluation of Electrochemical Process Improvement Using the Computer-Aided Nonlinear Frequency Response Method: Oxygen Reduction Reaction in Alkaline Media. in Frontiers in Chemistry. 2020;8.
doi:10.3389/fchem.2020.579869 .
Živković, Luka, Kandaswamy, Saikrishnan, Petkovska, Menka, Vidaković-Koch, Tanja, "Evaluation of Electrochemical Process Improvement Using the Computer-Aided Nonlinear Frequency Response Method: Oxygen Reduction Reaction in Alkaline Media" in Frontiers in Chemistry, 8 (2020),
https://doi.org/10.3389/fchem.2020.579869 . .
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A methodology for reactor synthesis based on process intensification concepts and application of optimization methods

Živković, Luka

(Univerzitet u Beogradu, Tehnološko-metalurški fakultet, 2019)

TY  - THES
AU  - Živković, Luka
PY  - 2019
UR  - http://eteze.bg.ac.rs/application/showtheses?thesesId=7517
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:22405/bdef:Content/download
UR  - http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=51887631
UR  - http://nardus.mpn.gov.rs/handle/123456789/17345
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4682
AB  - In this Ph.D. thesis, a new methodology for Reactor Synthesis Based on Process Intensification Concepts and Application of Optimization Methods (ReSyPIO) is presented and applied to two different cases. In Chapter 1: Introduction – Motivation and Objectives, the motive for the research is presented, and Hypotheses are formulated. The ReSyPIO methodology that rests upon these Hypotheses and consists of three consecutive stages is briefly described in this Chapter. The first stage encapsulates all present phases and phenomena inside the reactor functional building block, called module. Modules come as a direct result of a conceptual representation of the analyzed system. In the second stage, modules are further segmented if needed and interconnected, creating a reactor superstructure that is mathematically described for all desirable operating regimes. In the last stage of the ReSyPIO methodology, the optimal structure, operating conditions, and the operational regime are determined with the use of rigorous optimization. All three stages of the ReSyPIO methodology have a backflow, meaning that if analysis leads to impractical, nonfunctional or inefficient results, modifications in reactor superstructure and modules can be made. The objective is to conceptually and numerically derive the most efficient reactor structure and a set of operating conditions that would be used as a starting point in the future reactor design. Chapter 2: Literature Review is used to cover and review the most important research published in the area of Process Intensification and different Process System Engineering techniques. Different approaches and studies present in academia are highlighted and their elements compared with the presented ReSyPIO methodology with the accent on its advantages and contribution to the engineering science community.Also, in this Chapter, an array of well researched analytical and numerical approaches is presented that could be used in the future to strengthen the ReSyPIO methodology further and facilitate its easier application. In Chapter 3: Description of the ReSyPIO Methodology Reactor Synthesis based on Process Intensification and Optimization of Superstructure is explained in detail, with a graphical representation of the main building block, called Phenomenological Module. A general explanation is given on how to form a reactor superstructure and mathematically describe it with sets of material and energy balance equations that correspond to a number of present phases and components in the system. The ReSyPIO methodology is first applied to a generic case of two parallel reactions in Chapter 4, called Application of the ReSyPIO Methodology on a Generic Reaction Case. The case corresponds to two parallel reactions that could be found in the fine chemical industry. The reactions are endothermic and slow with the undesired product. After the application of the ReSyPIO methodology, an optimal reactor structure consisting of a segmented module with 17 side inlets for the reactant and heat source is obtained. It is recommended for the reactor to work in a continuous steady-state mode as the dynamic operation would not lead to a sufficient increase in reactor efficiency...
AB  - U ovoj doktorskoj disertaciji je predstavljena i primenjena nova metodologija za sintezu reaktora zasnovana na konceptima intenzifikacije procesa i primeni različitih optimizacionih tehnika (Reactor Synthesis Based on Process Intensification Concepts and Application of Optimization Methods – ReSyPIO). U poglavlju Uvod – Motivacija i ciljevi, formirane su hipoteze na kojima počiva ReSyPIO metodologija i data je motivacija za istraživanje. ReSyPIO metodologija je ukratko predstavljena i opisana kroz tri uzastopne etape. Prva etapa uokvirava sve prisutne faze i fenomene u reaktoru unutar funkcionalnih gradivnih jedinica, nazvanih moduli. Moduli predstavljaju rezultat konceptualnog prikaza analiziranog sistema. U drugoj etapi, moduli se po potrebi mogu dalje podeliti u segmente i međusobno povezati, kreirajući superstrukturu reaktora. Superstruktura je matematički opisana za sve režime rada reaktora od interesa. U poslednjoj etapi ReSyPIO metodologije, optimalna struktura, uslovi i režim rada reaktora su određeni primenom rigorozne optimizacije. Sve tri etape ReSyPIO metodologije imaju povratni tok, što znači da ukoliko analiza vodi ka nepraktičnim, nefunkcionalnim ili neefikasnim rešenjima, modifikacija matematičkog modela, superstrukture i/ili modula je moguća. Cilj primene ReSyPIO metodologije je da se konceptualnim i numeričkim pristupom dođe do optimalne preporuke za strukturu reaktora, operativne uslove i režim rada, koja bi bila početna pretpostavka u budućem dizajnu uređaja. Pregled literature daje opis i prikaz svih istraživanja od interesa, iz oblasti Intenzifikacije procesa i Teorije i analize procesnih sistema. Naglašeni su različiti pristupi i studije prisutne u istraživačkojzajednici, a njihovi elementi upoređeni sa predstavljenom ReSyPIO metodologijom sa akcentom na prednostima i naučnom doprinosu. U ovom poglavlju je dat i niz dobro istraženih analitičkih i numeričkih pristupa koji bi mogli da budu korišćeni u okviru ReSyPIO metodologije i olakšaju njenu primenu. U poglavlju Opis ReSyPIO metodologije, je detaljno objašnjena sinteza reaktora zasnovana na konceptima intenzifikacije procesa i optimizaciji superstrukture. Prvo je data procedura za grafičku i konceptualnu reprezentaciju sistema, preko glavnih gradivnih jedinica, fenomenoloških modula. Potom je objašnjeno kako se kreira superstruktura reaktora. Na kraju je dat uopšten postupak za matematički opis superstrukture preko skupova jednačina materijalnog i energetskog bilansa, čiji broj zavisi od broja prisutnih faza i komponenata u sistemu. ReSyPIO metodologija je prvi put primenjena na slučaju dve generičke paralelne reakcije u poglavlju pod nazivom Primena ReSyPIO metodologije na slučaju generičke reakcije. Ovaj slučaj odgovara reakcijama koje se mogu naći u industriji finih hemikalija. Reakcije su endotermne i spore, pri čemu je kinetički favorizovano kreiranje neželjenog proizvoda. Nakon primene ReSyPIO metodologije, dobijena je optimalna struktura reaktora koja se sastoji od segmentisanog modula sa 17 ulaza za izvor toplote i reaktant koji se dozira. Predloženo je da reaktor radi kontinualno, u stacionarnom režimu rada, jer bi dinamički režim rada rezultovao nedovoljnim povećanjem efikasnosti reaktora...
PB  - Univerzitet u Beogradu, Tehnološko-metalurški fakultet
T1  - A methodology for reactor synthesis based on process intensification concepts and application of optimization methods
T1  - Metodologija za sintezu reaktora zasnovana na konceptima intenzifikacije procesa i primeni metoda optimizacije
UR  - https://hdl.handle.net/21.15107/rcub_nardus_17345
ER  - 
@phdthesis{
author = "Živković, Luka",
year = "2019",
abstract = "In this Ph.D. thesis, a new methodology for Reactor Synthesis Based on Process Intensification Concepts and Application of Optimization Methods (ReSyPIO) is presented and applied to two different cases. In Chapter 1: Introduction – Motivation and Objectives, the motive for the research is presented, and Hypotheses are formulated. The ReSyPIO methodology that rests upon these Hypotheses and consists of three consecutive stages is briefly described in this Chapter. The first stage encapsulates all present phases and phenomena inside the reactor functional building block, called module. Modules come as a direct result of a conceptual representation of the analyzed system. In the second stage, modules are further segmented if needed and interconnected, creating a reactor superstructure that is mathematically described for all desirable operating regimes. In the last stage of the ReSyPIO methodology, the optimal structure, operating conditions, and the operational regime are determined with the use of rigorous optimization. All three stages of the ReSyPIO methodology have a backflow, meaning that if analysis leads to impractical, nonfunctional or inefficient results, modifications in reactor superstructure and modules can be made. The objective is to conceptually and numerically derive the most efficient reactor structure and a set of operating conditions that would be used as a starting point in the future reactor design. Chapter 2: Literature Review is used to cover and review the most important research published in the area of Process Intensification and different Process System Engineering techniques. Different approaches and studies present in academia are highlighted and their elements compared with the presented ReSyPIO methodology with the accent on its advantages and contribution to the engineering science community.Also, in this Chapter, an array of well researched analytical and numerical approaches is presented that could be used in the future to strengthen the ReSyPIO methodology further and facilitate its easier application. In Chapter 3: Description of the ReSyPIO Methodology Reactor Synthesis based on Process Intensification and Optimization of Superstructure is explained in detail, with a graphical representation of the main building block, called Phenomenological Module. A general explanation is given on how to form a reactor superstructure and mathematically describe it with sets of material and energy balance equations that correspond to a number of present phases and components in the system. The ReSyPIO methodology is first applied to a generic case of two parallel reactions in Chapter 4, called Application of the ReSyPIO Methodology on a Generic Reaction Case. The case corresponds to two parallel reactions that could be found in the fine chemical industry. The reactions are endothermic and slow with the undesired product. After the application of the ReSyPIO methodology, an optimal reactor structure consisting of a segmented module with 17 side inlets for the reactant and heat source is obtained. It is recommended for the reactor to work in a continuous steady-state mode as the dynamic operation would not lead to a sufficient increase in reactor efficiency..., U ovoj doktorskoj disertaciji je predstavljena i primenjena nova metodologija za sintezu reaktora zasnovana na konceptima intenzifikacije procesa i primeni različitih optimizacionih tehnika (Reactor Synthesis Based on Process Intensification Concepts and Application of Optimization Methods – ReSyPIO). U poglavlju Uvod – Motivacija i ciljevi, formirane su hipoteze na kojima počiva ReSyPIO metodologija i data je motivacija za istraživanje. ReSyPIO metodologija je ukratko predstavljena i opisana kroz tri uzastopne etape. Prva etapa uokvirava sve prisutne faze i fenomene u reaktoru unutar funkcionalnih gradivnih jedinica, nazvanih moduli. Moduli predstavljaju rezultat konceptualnog prikaza analiziranog sistema. U drugoj etapi, moduli se po potrebi mogu dalje podeliti u segmente i međusobno povezati, kreirajući superstrukturu reaktora. Superstruktura je matematički opisana za sve režime rada reaktora od interesa. U poslednjoj etapi ReSyPIO metodologije, optimalna struktura, uslovi i režim rada reaktora su određeni primenom rigorozne optimizacije. Sve tri etape ReSyPIO metodologije imaju povratni tok, što znači da ukoliko analiza vodi ka nepraktičnim, nefunkcionalnim ili neefikasnim rešenjima, modifikacija matematičkog modela, superstrukture i/ili modula je moguća. Cilj primene ReSyPIO metodologije je da se konceptualnim i numeričkim pristupom dođe do optimalne preporuke za strukturu reaktora, operativne uslove i režim rada, koja bi bila početna pretpostavka u budućem dizajnu uređaja. Pregled literature daje opis i prikaz svih istraživanja od interesa, iz oblasti Intenzifikacije procesa i Teorije i analize procesnih sistema. Naglašeni su različiti pristupi i studije prisutne u istraživačkojzajednici, a njihovi elementi upoređeni sa predstavljenom ReSyPIO metodologijom sa akcentom na prednostima i naučnom doprinosu. U ovom poglavlju je dat i niz dobro istraženih analitičkih i numeričkih pristupa koji bi mogli da budu korišćeni u okviru ReSyPIO metodologije i olakšaju njenu primenu. U poglavlju Opis ReSyPIO metodologije, je detaljno objašnjena sinteza reaktora zasnovana na konceptima intenzifikacije procesa i optimizaciji superstrukture. Prvo je data procedura za grafičku i konceptualnu reprezentaciju sistema, preko glavnih gradivnih jedinica, fenomenoloških modula. Potom je objašnjeno kako se kreira superstruktura reaktora. Na kraju je dat uopšten postupak za matematički opis superstrukture preko skupova jednačina materijalnog i energetskog bilansa, čiji broj zavisi od broja prisutnih faza i komponenata u sistemu. ReSyPIO metodologija je prvi put primenjena na slučaju dve generičke paralelne reakcije u poglavlju pod nazivom Primena ReSyPIO metodologije na slučaju generičke reakcije. Ovaj slučaj odgovara reakcijama koje se mogu naći u industriji finih hemikalija. Reakcije su endotermne i spore, pri čemu je kinetički favorizovano kreiranje neželjenog proizvoda. Nakon primene ReSyPIO metodologije, dobijena je optimalna struktura reaktora koja se sastoji od segmentisanog modula sa 17 ulaza za izvor toplote i reaktant koji se dozira. Predloženo je da reaktor radi kontinualno, u stacionarnom režimu rada, jer bi dinamički režim rada rezultovao nedovoljnim povećanjem efikasnosti reaktora...",
publisher = "Univerzitet u Beogradu, Tehnološko-metalurški fakultet",
title = "A methodology for reactor synthesis based on process intensification concepts and application of optimization methods, Metodologija za sintezu reaktora zasnovana na konceptima intenzifikacije procesa i primeni metoda optimizacije",
url = "https://hdl.handle.net/21.15107/rcub_nardus_17345"
}
Živković, L.. (2019). A methodology for reactor synthesis based on process intensification concepts and application of optimization methods. 
Univerzitet u Beogradu, Tehnološko-metalurški fakultet..
https://hdl.handle.net/21.15107/rcub_nardus_17345
Živković L. A methodology for reactor synthesis based on process intensification concepts and application of optimization methods. 2019;.
https://hdl.handle.net/21.15107/rcub_nardus_17345 .
Živković, Luka, "A methodology for reactor synthesis based on process intensification concepts and application of optimization methods" (2019),
https://hdl.handle.net/21.15107/rcub_nardus_17345 .

Oxygen reduction reaction on silver electrodes under strong alkaline conditions

Kandaswamy, Saikrishnan; Sorrentino, Antonio; Borate, Shivangi; Živković, Luka; Petkovska, Menka; Vidaković-Koch, Tanja

(Pergamon-Elsevier Science Ltd, Oxford, 2019)

TY  - JOUR
AU  - Kandaswamy, Saikrishnan
AU  - Sorrentino, Antonio
AU  - Borate, Shivangi
AU  - Živković, Luka
AU  - Petkovska, Menka
AU  - Vidaković-Koch, Tanja
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4078
AB  - Oxygen reduction reaction (ORR) was studied on a silver polycrystalline electrode in different NaOH concentrations with a help of rotating disc and rotating ring disc electrodes. Soluble reaction intermediate was detected at all alkaline concentrations, but its concentration increased with an increase of the level of impurities. ORR is not NaOH concentration dependent at low concentrations (0.1 and 1 M). In 11 M NaOH ORR onsets at more positive potentials in the region where underpotential silver oxide formation shows less reversible behaviour. The nonlinear frequency response analysis spectra show significant qualitative difference with NaOH concentration indicating a high capability of this method for kinetic mechanism investigations.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Electrochimica Acta
T1  - Oxygen reduction reaction on silver electrodes under strong alkaline conditions
VL  - 320
DO  - 10.1016/j.electacta.2019.07.028
ER  - 
@article{
author = "Kandaswamy, Saikrishnan and Sorrentino, Antonio and Borate, Shivangi and Živković, Luka and Petkovska, Menka and Vidaković-Koch, Tanja",
year = "2019",
abstract = "Oxygen reduction reaction (ORR) was studied on a silver polycrystalline electrode in different NaOH concentrations with a help of rotating disc and rotating ring disc electrodes. Soluble reaction intermediate was detected at all alkaline concentrations, but its concentration increased with an increase of the level of impurities. ORR is not NaOH concentration dependent at low concentrations (0.1 and 1 M). In 11 M NaOH ORR onsets at more positive potentials in the region where underpotential silver oxide formation shows less reversible behaviour. The nonlinear frequency response analysis spectra show significant qualitative difference with NaOH concentration indicating a high capability of this method for kinetic mechanism investigations.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Electrochimica Acta",
title = "Oxygen reduction reaction on silver electrodes under strong alkaline conditions",
volume = "320",
doi = "10.1016/j.electacta.2019.07.028"
}
Kandaswamy, S., Sorrentino, A., Borate, S., Živković, L., Petkovska, M.,& Vidaković-Koch, T.. (2019). Oxygen reduction reaction on silver electrodes under strong alkaline conditions. in Electrochimica Acta
Pergamon-Elsevier Science Ltd, Oxford., 320.
https://doi.org/10.1016/j.electacta.2019.07.028
Kandaswamy S, Sorrentino A, Borate S, Živković L, Petkovska M, Vidaković-Koch T. Oxygen reduction reaction on silver electrodes under strong alkaline conditions. in Electrochimica Acta. 2019;320.
doi:10.1016/j.electacta.2019.07.028 .
Kandaswamy, Saikrishnan, Sorrentino, Antonio, Borate, Shivangi, Živković, Luka, Petkovska, Menka, Vidaković-Koch, Tanja, "Oxygen reduction reaction on silver electrodes under strong alkaline conditions" in Electrochimica Acta, 320 (2019),
https://doi.org/10.1016/j.electacta.2019.07.028 . .
13
8
13

Residence time distribution and Peclet number correlation for continuous oscillatory flow reactors

Slavnić, Danijela; Živković, Luka; Bjelić, Ana V.; Bugarski, Branko; Nikačević, Nikola

(Wiley, Hoboken, 2017)

TY  - JOUR
AU  - Slavnić, Danijela
AU  - Živković, Luka
AU  - Bjelić, Ana V.
AU  - Bugarski, Branko
AU  - Nikačević, Nikola
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3624
AB  - BACKGROUND: Oscillatory baffled reactors have good prospect for use in batch to continuous transition for many industries. For reliable design and scale up it is essential to mathematically describe mixing and flow pattern of oscillatory flow. The aim of this study is to investigate the effects of operating conditions on residence time distribution (RTD) of liquid phase in a continuous oscillatory baffled reactor (COBR) and to propose a correlation that accurately describes the flow pattern. RESULTS: Analysis of results obtained for a wide variety of operating conditions in two geometrically similar reactors show that increase of oscillation frequency and amplitude both decrease axial dispersion, with a more prominent effect of amplitude. Proposed power-law correlation is in very good agreement with all performed experiments. Peclet numbers predicted by this correlation are in reasonably good agreement with the literature experimental data and is much better than the ones obtained by the commonly used correlation, which contains more fitting parameters. CONCLUSION: Results show that relatively high amplitudes, low frequencies and low to moderate secondary non-oscillatory flow should be used to ensure effective mixing with a low net flow in COBR. Developed correlation offers a simple, yet reliable way to predict the macroscopic flow pattern of liquid in COBR.
PB  - Wiley, Hoboken
T2  - Journal of Chemical Technology and Biotechnology
T1  - Residence time distribution and Peclet number correlation for continuous oscillatory flow reactors
EP  - 2188
IS  - 8
SP  - 2178
VL  - 92
DO  - 10.1002/jctb.5242
ER  - 
@article{
author = "Slavnić, Danijela and Živković, Luka and Bjelić, Ana V. and Bugarski, Branko and Nikačević, Nikola",
year = "2017",
abstract = "BACKGROUND: Oscillatory baffled reactors have good prospect for use in batch to continuous transition for many industries. For reliable design and scale up it is essential to mathematically describe mixing and flow pattern of oscillatory flow. The aim of this study is to investigate the effects of operating conditions on residence time distribution (RTD) of liquid phase in a continuous oscillatory baffled reactor (COBR) and to propose a correlation that accurately describes the flow pattern. RESULTS: Analysis of results obtained for a wide variety of operating conditions in two geometrically similar reactors show that increase of oscillation frequency and amplitude both decrease axial dispersion, with a more prominent effect of amplitude. Proposed power-law correlation is in very good agreement with all performed experiments. Peclet numbers predicted by this correlation are in reasonably good agreement with the literature experimental data and is much better than the ones obtained by the commonly used correlation, which contains more fitting parameters. CONCLUSION: Results show that relatively high amplitudes, low frequencies and low to moderate secondary non-oscillatory flow should be used to ensure effective mixing with a low net flow in COBR. Developed correlation offers a simple, yet reliable way to predict the macroscopic flow pattern of liquid in COBR.",
publisher = "Wiley, Hoboken",
journal = "Journal of Chemical Technology and Biotechnology",
title = "Residence time distribution and Peclet number correlation for continuous oscillatory flow reactors",
pages = "2188-2178",
number = "8",
volume = "92",
doi = "10.1002/jctb.5242"
}
Slavnić, D., Živković, L., Bjelić, A. V., Bugarski, B.,& Nikačević, N.. (2017). Residence time distribution and Peclet number correlation for continuous oscillatory flow reactors. in Journal of Chemical Technology and Biotechnology
Wiley, Hoboken., 92(8), 2178-2188.
https://doi.org/10.1002/jctb.5242
Slavnić D, Živković L, Bjelić AV, Bugarski B, Nikačević N. Residence time distribution and Peclet number correlation for continuous oscillatory flow reactors. in Journal of Chemical Technology and Biotechnology. 2017;92(8):2178-2188.
doi:10.1002/jctb.5242 .
Slavnić, Danijela, Živković, Luka, Bjelić, Ana V., Bugarski, Branko, Nikačević, Nikola, "Residence time distribution and Peclet number correlation for continuous oscillatory flow reactors" in Journal of Chemical Technology and Biotechnology, 92, no. 8 (2017):2178-2188,
https://doi.org/10.1002/jctb.5242 . .
15
6
14

Kinetics and reactor modeling for CaO sorption-enhanced high-temperature water-gas shift (SE-WGS) reaction for hydrogen production

Živković, Luka; Pohar, Andrej; Likozar, Blaž; Nikačević, Nikola

(Elsevier Sci Ltd, Oxford, 2016)

TY  - JOUR
AU  - Živković, Luka
AU  - Pohar, Andrej
AU  - Likozar, Blaž
AU  - Nikačević, Nikola
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3346
AB  - Hydrogen, an important energy carrier of the future, produces no pollution and has a high content of energy. It is formed as a direct product of the water-gas shift (WGS) reaction, which occurs in various processes for the production of hydrogen, ammonia, methanol and different hydrocarbons, and is also a side reaction during the steam reforming of hydrocarbons and Fisher-Tropsch synthesis. Since it is an equilibrium reaction, it may be intensified by the selective removal of the products, which can lead to higher yields and energy savings. In this study, carbon dioxide was removed through chemisorption on CaO particles. In the first part, the WGS reaction kinetics were obtained on an industrial iron chromium catalyst in a packed-bed reactor. In the second part, the CO2 chemisorption kinetics on CaO sorbent particles were examined, simultaneously with the WGS reaction. A modified dynamic shrinking-core model was used to describe the carbonation reaction, which accounted for the non ideal core shrinkage. With the introduction of a sorbent conversion-dependent effective diffusion coefficient, the model perfectly reproduced the obtained experimental results. Valuable insight into the sorption-enhanced process was obtained with the full concentration profiles of the species involved (CO, H2O, CO2, H-2) in time and space, as well as the conversion of the sorbent particles, also in the radial dimension. The developed model was used to simulate a cyclic sorption-enhanced water-gas shift operation in a revolver-type manner which allows for continuous sorbent regeneration and a much higher than-equilibrium hydrogen production for various operational parameters. The significance of the model lies in the precise replication of the experimental results and its applicability to the vast area of the newly-emerged industrial sorption-enhanced technologies.
PB  - Elsevier Sci Ltd, Oxford
T2  - Applied Energy
T1  - Kinetics and reactor modeling for CaO sorption-enhanced high-temperature water-gas shift (SE-WGS) reaction for hydrogen production
EP  - 855
SP  - 844
VL  - 178
DO  - 10.1016/j.apenergy.2016.06.071
ER  - 
@article{
author = "Živković, Luka and Pohar, Andrej and Likozar, Blaž and Nikačević, Nikola",
year = "2016",
abstract = "Hydrogen, an important energy carrier of the future, produces no pollution and has a high content of energy. It is formed as a direct product of the water-gas shift (WGS) reaction, which occurs in various processes for the production of hydrogen, ammonia, methanol and different hydrocarbons, and is also a side reaction during the steam reforming of hydrocarbons and Fisher-Tropsch synthesis. Since it is an equilibrium reaction, it may be intensified by the selective removal of the products, which can lead to higher yields and energy savings. In this study, carbon dioxide was removed through chemisorption on CaO particles. In the first part, the WGS reaction kinetics were obtained on an industrial iron chromium catalyst in a packed-bed reactor. In the second part, the CO2 chemisorption kinetics on CaO sorbent particles were examined, simultaneously with the WGS reaction. A modified dynamic shrinking-core model was used to describe the carbonation reaction, which accounted for the non ideal core shrinkage. With the introduction of a sorbent conversion-dependent effective diffusion coefficient, the model perfectly reproduced the obtained experimental results. Valuable insight into the sorption-enhanced process was obtained with the full concentration profiles of the species involved (CO, H2O, CO2, H-2) in time and space, as well as the conversion of the sorbent particles, also in the radial dimension. The developed model was used to simulate a cyclic sorption-enhanced water-gas shift operation in a revolver-type manner which allows for continuous sorbent regeneration and a much higher than-equilibrium hydrogen production for various operational parameters. The significance of the model lies in the precise replication of the experimental results and its applicability to the vast area of the newly-emerged industrial sorption-enhanced technologies.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Applied Energy",
title = "Kinetics and reactor modeling for CaO sorption-enhanced high-temperature water-gas shift (SE-WGS) reaction for hydrogen production",
pages = "855-844",
volume = "178",
doi = "10.1016/j.apenergy.2016.06.071"
}
Živković, L., Pohar, A., Likozar, B.,& Nikačević, N.. (2016). Kinetics and reactor modeling for CaO sorption-enhanced high-temperature water-gas shift (SE-WGS) reaction for hydrogen production. in Applied Energy
Elsevier Sci Ltd, Oxford., 178, 844-855.
https://doi.org/10.1016/j.apenergy.2016.06.071
Živković L, Pohar A, Likozar B, Nikačević N. Kinetics and reactor modeling for CaO sorption-enhanced high-temperature water-gas shift (SE-WGS) reaction for hydrogen production. in Applied Energy. 2016;178:844-855.
doi:10.1016/j.apenergy.2016.06.071 .
Živković, Luka, Pohar, Andrej, Likozar, Blaž, Nikačević, Nikola, "Kinetics and reactor modeling for CaO sorption-enhanced high-temperature water-gas shift (SE-WGS) reaction for hydrogen production" in Applied Energy, 178 (2016):844-855,
https://doi.org/10.1016/j.apenergy.2016.06.071 . .
3
38
23
34

A method for reactor synthesis based on process intensification principles and optimization of superstructure consisting of phenomenological modules

Živković, Luka; Nikačević, Nikola

(Inst Chemical Engineers, Rugby, 2016)

TY  - JOUR
AU  - Živković, Luka
AU  - Nikačević, Nikola
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3347
AB  - A novel method for reaction synthesis is proposed. The method establishes strong interconnection between process intensification (PI) principles and process system engineering (PSE) techniques, which are used for problem formulation and optimization. The general aim is to demonstrate a potential for innovative solutions that combine both optimal reactor structure and its operational regime. The method consists of three stages: (I) Reaction Screening, in which phenomenological modules are defined; (II) Reaction System Superstructure and Mathematical Modeling in which modules (building blocks) are connected in a generic reactor superstructure; and (III) Optimization in which optimal structure and operational regime is derived, using techno-economical objective function and different optimization methods. The proposed method is demonstrated on a general example of two parallel endothermic reactions in liquid phase. The optimization results show that continuous steady-state reactor system outperforms fed-batch reactor and has similar performance as more complex periodically operated continuous reactor, and thus presents the optimal solution.
PB  - Inst Chemical Engineers, Rugby
T2  - Chemical Engineering Research & Design
T1  - A method for reactor synthesis based on process intensification principles and optimization of superstructure consisting of phenomenological modules
EP  - 205
SP  - 189
VL  - 113
DO  - 10.1016/j.cherd.2016.07.008
ER  - 
@article{
author = "Živković, Luka and Nikačević, Nikola",
year = "2016",
abstract = "A novel method for reaction synthesis is proposed. The method establishes strong interconnection between process intensification (PI) principles and process system engineering (PSE) techniques, which are used for problem formulation and optimization. The general aim is to demonstrate a potential for innovative solutions that combine both optimal reactor structure and its operational regime. The method consists of three stages: (I) Reaction Screening, in which phenomenological modules are defined; (II) Reaction System Superstructure and Mathematical Modeling in which modules (building blocks) are connected in a generic reactor superstructure; and (III) Optimization in which optimal structure and operational regime is derived, using techno-economical objective function and different optimization methods. The proposed method is demonstrated on a general example of two parallel endothermic reactions in liquid phase. The optimization results show that continuous steady-state reactor system outperforms fed-batch reactor and has similar performance as more complex periodically operated continuous reactor, and thus presents the optimal solution.",
publisher = "Inst Chemical Engineers, Rugby",
journal = "Chemical Engineering Research & Design",
title = "A method for reactor synthesis based on process intensification principles and optimization of superstructure consisting of phenomenological modules",
pages = "205-189",
volume = "113",
doi = "10.1016/j.cherd.2016.07.008"
}
Živković, L.,& Nikačević, N.. (2016). A method for reactor synthesis based on process intensification principles and optimization of superstructure consisting of phenomenological modules. in Chemical Engineering Research & Design
Inst Chemical Engineers, Rugby., 113, 189-205.
https://doi.org/10.1016/j.cherd.2016.07.008
Živković L, Nikačević N. A method for reactor synthesis based on process intensification principles and optimization of superstructure consisting of phenomenological modules. in Chemical Engineering Research & Design. 2016;113:189-205.
doi:10.1016/j.cherd.2016.07.008 .
Živković, Luka, Nikačević, Nikola, "A method for reactor synthesis based on process intensification principles and optimization of superstructure consisting of phenomenological modules" in Chemical Engineering Research & Design, 113 (2016):189-205,
https://doi.org/10.1016/j.cherd.2016.07.008 . .
10
10
10

Non-linear frequency response analysis of the kinetics of electrochemical reactions: a case study – ferrocyanide oxidation kinetics

Panić, Vladimir; Vidaković-Koch, Tanja; Živković, Luka; Petkovska, Menka; Sundmacher, Kai

(Serbian Chemical Society, Belgrade, 2010)

TY  - CONF
AU  - Panić, Vladimir
AU  - Vidaković-Koch, Tanja
AU  - Živković, Luka
AU  - Petkovska, Menka
AU  - Sundmacher, Kai
PY  - 2010
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1545
AB  - In general, electrochemical (EC) systems are non-linear, which means they respond nonlinearly to a frequency-dependent periodic input perturbation of high amplitude imposed around a steady-state. In addition, the kinetics of EC reactions are quite complex and different rivalling model presentations can be formulated for certain EC reaction. While standard electrochemical methods (steady-state and electrochemical impedance spectroscopy) showed low sensitivity towards the model discrimination, non-linear frequency response analysis (NLFRA) of EC kinetics can appear advantageous for this purpose. In this work, NLFRA is applied in experimental and theoretical study of ferrocyanide oxidation as a model EC reaction.
PB  - Serbian Chemical Society, Belgrade
C3  - Second Regional Symposium on Electrochemistry South-East Europe, RSE-SEE, Proceedings
T1  - Non-linear frequency response analysis of the kinetics of electrochemical reactions: a case study – ferrocyanide oxidation kinetics
EP  - 148
SP  - 145
UR  - https://hdl.handle.net/21.15107/rcub_technorep_1545
ER  - 
@conference{
author = "Panić, Vladimir and Vidaković-Koch, Tanja and Živković, Luka and Petkovska, Menka and Sundmacher, Kai",
year = "2010",
abstract = "In general, electrochemical (EC) systems are non-linear, which means they respond nonlinearly to a frequency-dependent periodic input perturbation of high amplitude imposed around a steady-state. In addition, the kinetics of EC reactions are quite complex and different rivalling model presentations can be formulated for certain EC reaction. While standard electrochemical methods (steady-state and electrochemical impedance spectroscopy) showed low sensitivity towards the model discrimination, non-linear frequency response analysis (NLFRA) of EC kinetics can appear advantageous for this purpose. In this work, NLFRA is applied in experimental and theoretical study of ferrocyanide oxidation as a model EC reaction.",
publisher = "Serbian Chemical Society, Belgrade",
journal = "Second Regional Symposium on Electrochemistry South-East Europe, RSE-SEE, Proceedings",
title = "Non-linear frequency response analysis of the kinetics of electrochemical reactions: a case study – ferrocyanide oxidation kinetics",
pages = "148-145",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1545"
}
Panić, V., Vidaković-Koch, T., Živković, L., Petkovska, M.,& Sundmacher, K.. (2010). Non-linear frequency response analysis of the kinetics of electrochemical reactions: a case study – ferrocyanide oxidation kinetics. in Second Regional Symposium on Electrochemistry South-East Europe, RSE-SEE, Proceedings
Serbian Chemical Society, Belgrade., 145-148.
https://hdl.handle.net/21.15107/rcub_technorep_1545
Panić V, Vidaković-Koch T, Živković L, Petkovska M, Sundmacher K. Non-linear frequency response analysis of the kinetics of electrochemical reactions: a case study – ferrocyanide oxidation kinetics. in Second Regional Symposium on Electrochemistry South-East Europe, RSE-SEE, Proceedings. 2010;:145-148.
https://hdl.handle.net/21.15107/rcub_technorep_1545 .
Panić, Vladimir, Vidaković-Koch, Tanja, Živković, Luka, Petkovska, Menka, Sundmacher, Kai, "Non-linear frequency response analysis of the kinetics of electrochemical reactions: a case study – ferrocyanide oxidation kinetics" in Second Regional Symposium on Electrochemistry South-East Europe, RSE-SEE, Proceedings (2010):145-148,
https://hdl.handle.net/21.15107/rcub_technorep_1545 .