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 . .

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 . .

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 . .

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 . .

TY  - JOUR
AU  - Panić, Vladimir
AU  - Vidaković-Koch, Tanja
AU  - Andrić, Milan
AU  - Petkovska, Menka
AU  - Sundmacher, Kai
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1867
AB  - Kinetics of ferrocyanide electrooxidation was investigated by nonlinear frequency response analysis (NLFRA) of current output to the sinusoidal large-amplitude potential perturbation input. The aim was to establish a measurement routine and to validate experimentally the NLFRA method on an example of a simple electrochemical reaction comprising charge and mass transfer. The first-order frequency response function (FRF) contains quasi-linear information on the reaction kinetics and corresponds to electrochemical admittance. The nonlinear fingerprint of the system is contained in the second-order FRF. The first- and second-order FRFs are determined from experimental first and second harmonics. Their intensities depend on the input signal amplitude, which has to be chosen carefully to avoid the contributions of higher order harmonics. The influence of the potential and electrode rotation speed on the first- and second-order FRFs has been studied. The experimentally obtained FRFs are compared with the theoretical FRFs determined in Part I of this work. The theoretical FRFs can predict all essential experimental observations. These findings indicate that additional information on reaction kinetics can be gained from the analysis of the second-order FRF.
PB  - Amer Chemical Soc, Washington
T2  - Journal of Physical Chemistry C
T1  - Nonlinear Frequency Response Analysis of the Ferrocyanide Oxidation Kinetics. Part II. Measurement Routine and Experimental Validation
EP  - 17358
IS  - 35
SP  - 17352
VL  - 115
DO  - 10.1021/jp201300a
ER  - 

@article{
author = "Panić, Vladimir and Vidaković-Koch, Tanja and Andrić, Milan and Petkovska, Menka and Sundmacher, Kai",
year = "2011",
abstract = "Kinetics of ferrocyanide electrooxidation was investigated by nonlinear frequency response analysis (NLFRA) of current output to the sinusoidal large-amplitude potential perturbation input. The aim was to establish a measurement routine and to validate experimentally the NLFRA method on an example of a simple electrochemical reaction comprising charge and mass transfer. The first-order frequency response function (FRF) contains quasi-linear information on the reaction kinetics and corresponds to electrochemical admittance. The nonlinear fingerprint of the system is contained in the second-order FRF. The first- and second-order FRFs are determined from experimental first and second harmonics. Their intensities depend on the input signal amplitude, which has to be chosen carefully to avoid the contributions of higher order harmonics. The influence of the potential and electrode rotation speed on the first- and second-order FRFs has been studied. The experimentally obtained FRFs are compared with the theoretical FRFs determined in Part I of this work. The theoretical FRFs can predict all essential experimental observations. These findings indicate that additional information on reaction kinetics can be gained from the analysis of the second-order FRF.",
publisher = "Amer Chemical Soc, Washington",
journal = "Journal of Physical Chemistry C",
title = "Nonlinear Frequency Response Analysis of the Ferrocyanide Oxidation Kinetics. Part II. Measurement Routine and Experimental Validation",
pages = "17358-17352",
number = "35",
volume = "115",
doi = "10.1021/jp201300a"
}

Panić, V., Vidaković-Koch, T., Andrić, M., Petkovska, M.,& Sundmacher, K.. (2011). Nonlinear Frequency Response Analysis of the Ferrocyanide Oxidation Kinetics. Part II. Measurement Routine and Experimental Validation. in Journal of Physical Chemistry C
Amer Chemical Soc, Washington., 115(35), 17352-17358.
https://doi.org/10.1021/jp201300a

Panić V, Vidaković-Koch T, Andrić M, Petkovska M, Sundmacher K. Nonlinear Frequency Response Analysis of the Ferrocyanide Oxidation Kinetics. Part II. Measurement Routine and Experimental Validation. in Journal of Physical Chemistry C. 2011;115(35):17352-17358.
doi:10.1021/jp201300a .

Panić, Vladimir, Vidaković-Koch, Tanja, Andrić, Milan, Petkovska, Menka, Sundmacher, Kai, "Nonlinear Frequency Response Analysis of the Ferrocyanide Oxidation Kinetics. Part II. Measurement Routine and Experimental Validation" in Journal of Physical Chemistry C, 115, no. 35 (2011):17352-17358,
https://doi.org/10.1021/jp201300a . .

TY  - JOUR
AU  - Vidaković-Koch, Tanja
AU  - Panić, Vladimir
AU  - Andrić, Milan
AU  - Petkovska, Menka
AU  - Sundmacher, Kai
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1866
AB  - In this work, a nonlinear frequency response (NLFR) analysis was used for a first time in a theoretical study of nonlinear behavior of electrochemical (EC) ferrocyanide oxidation as a simple model reaction. Analytical expressions of the first- and second-order frequency response functions (FRFs) are derived. The first-order FRF is equivalent to the EC admittance and contains information about the linear behavior of the system, whereas the second-order FRF contains additional nonlinear information. The influence of different parameters, such as the heterogeneous rate constant, solution resistance, double-layer capacitance, diffusion coefficients of the reacting species, and electrode rotation rate on the characteristics of the first- and second-order FRFs was checked and discussed. It was found that the second-order FRF is more sensitive to the changes of the studied parameters than the first-order FRF. Experimental verification of the NLFR analysis of EC ferrocyanide oxidation is presented in Part II of this work
PB  - Amer Chemical Soc, Washington
T2  - Journal of Physical Chemistry C
T1  - Nonlinear Frequency Response Analysis of the Ferrocyanide Oxidation Kinetics. Part I. A Theoretical Analysis
EP  - 17351
IS  - 35
SP  - 17341
VL  - 115
DO  - 10.1021/jp201297v
ER  - 

@article{
author = "Vidaković-Koch, Tanja and Panić, Vladimir and Andrić, Milan and Petkovska, Menka and Sundmacher, Kai",
year = "2011",
abstract = "In this work, a nonlinear frequency response (NLFR) analysis was used for a first time in a theoretical study of nonlinear behavior of electrochemical (EC) ferrocyanide oxidation as a simple model reaction. Analytical expressions of the first- and second-order frequency response functions (FRFs) are derived. The first-order FRF is equivalent to the EC admittance and contains information about the linear behavior of the system, whereas the second-order FRF contains additional nonlinear information. The influence of different parameters, such as the heterogeneous rate constant, solution resistance, double-layer capacitance, diffusion coefficients of the reacting species, and electrode rotation rate on the characteristics of the first- and second-order FRFs was checked and discussed. It was found that the second-order FRF is more sensitive to the changes of the studied parameters than the first-order FRF. Experimental verification of the NLFR analysis of EC ferrocyanide oxidation is presented in Part II of this work",
publisher = "Amer Chemical Soc, Washington",
journal = "Journal of Physical Chemistry C",
title = "Nonlinear Frequency Response Analysis of the Ferrocyanide Oxidation Kinetics. Part I. A Theoretical Analysis",
pages = "17351-17341",
number = "35",
volume = "115",
doi = "10.1021/jp201297v"
}

Vidaković-Koch, T., Panić, V., Andrić, M., Petkovska, M.,& Sundmacher, K.. (2011). Nonlinear Frequency Response Analysis of the Ferrocyanide Oxidation Kinetics. Part I. A Theoretical Analysis. in Journal of Physical Chemistry C
Amer Chemical Soc, Washington., 115(35), 17341-17351.
https://doi.org/10.1021/jp201297v

Vidaković-Koch T, Panić V, Andrić M, Petkovska M, Sundmacher K. Nonlinear Frequency Response Analysis of the Ferrocyanide Oxidation Kinetics. Part I. A Theoretical Analysis. in Journal of Physical Chemistry C. 2011;115(35):17341-17351.
doi:10.1021/jp201297v .

Vidaković-Koch, Tanja, Panić, Vladimir, Andrić, Milan, Petkovska, Menka, Sundmacher, Kai, "Nonlinear Frequency Response Analysis of the Ferrocyanide Oxidation Kinetics. Part I. A Theoretical Analysis" in Journal of Physical Chemistry C, 115, no. 35 (2011):17341-17351,
https://doi.org/10.1021/jp201297v . .

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 .

TY  - JOUR
AU  - Bensmann, Boris
AU  - Petkovska, Menka
AU  - Vidaković-Koch, Tanja
AU  - Hanke-Rauschenbach, Richard
AU  - Sundmacher, Kai
PY  - 2010
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1652
AB  - In this theoretical contribution, nonlinear frequency response analysis was applied for the investigation of electrochemical methanol oxidation. This technique expresses the input-output behavior of any weakly nonlinear system with the help of the Volterra series expansion and generalized Fourier transform into so-called higher order frequency response functions. These functions contain the system's nonlinear fingerprint. They can be derived analytically from a nonlinear model. These functions can be obtained experimentally from the measurement of higher harmonics induced by a high amplitude sinusoidal perturbation of the system of interest. Frequency response functions up to the second order have been derived analytically for four different model varieties describing the kinetics of the electrochemical methanol oxidation. The first-order frequency response function corresponds to the reciprocal value of the well-known electrochemical impedance, which represents the linear part of the frequency response. This function does not contain sufficient information for discrimination between the different kinetic models. In contrast, the symmetrical second-order frequency response functions H(2)(omega,omega) show differences in shape, which substantiate the availability of the theoretical prerequisites for model discrimination. A detailed parametric study for all four model variants has been performed. The results show that the basic features of the shapes of the H(2)(omega,omega) amplitude spectra corresponding to the four models remain unique. The ubiquitousness of the qualitative differences between the competing models, for the whole set of parameters chosen for our analysis, suggests that the aforementioned amplitude spectra contain sufficient information for an unequivocal model discrimination.
PB  - Electrochemical Soc Inc, Pennington
T2  - Journal of the Electrochemical Society
T1  - Nonlinear Frequency Response of Electrochemical Methanol Oxidation Kinetics: A Theoretical Analysis
EP  - B1289
IS  - 9
SP  - B1279
VL  - 157
DO  - 10.1149/1.3446836
ER  - 

@article{
author = "Bensmann, Boris and Petkovska, Menka and Vidaković-Koch, Tanja and Hanke-Rauschenbach, Richard and Sundmacher, Kai",
year = "2010",
abstract = "In this theoretical contribution, nonlinear frequency response analysis was applied for the investigation of electrochemical methanol oxidation. This technique expresses the input-output behavior of any weakly nonlinear system with the help of the Volterra series expansion and generalized Fourier transform into so-called higher order frequency response functions. These functions contain the system's nonlinear fingerprint. They can be derived analytically from a nonlinear model. These functions can be obtained experimentally from the measurement of higher harmonics induced by a high amplitude sinusoidal perturbation of the system of interest. Frequency response functions up to the second order have been derived analytically for four different model varieties describing the kinetics of the electrochemical methanol oxidation. The first-order frequency response function corresponds to the reciprocal value of the well-known electrochemical impedance, which represents the linear part of the frequency response. This function does not contain sufficient information for discrimination between the different kinetic models. In contrast, the symmetrical second-order frequency response functions H(2)(omega,omega) show differences in shape, which substantiate the availability of the theoretical prerequisites for model discrimination. A detailed parametric study for all four model variants has been performed. The results show that the basic features of the shapes of the H(2)(omega,omega) amplitude spectra corresponding to the four models remain unique. The ubiquitousness of the qualitative differences between the competing models, for the whole set of parameters chosen for our analysis, suggests that the aforementioned amplitude spectra contain sufficient information for an unequivocal model discrimination.",
publisher = "Electrochemical Soc Inc, Pennington",
journal = "Journal of the Electrochemical Society",
title = "Nonlinear Frequency Response of Electrochemical Methanol Oxidation Kinetics: A Theoretical Analysis",
pages = "B1289-B1279",
number = "9",
volume = "157",
doi = "10.1149/1.3446836"
}

Bensmann, B., Petkovska, M., Vidaković-Koch, T., Hanke-Rauschenbach, R.,& Sundmacher, K.. (2010). Nonlinear Frequency Response of Electrochemical Methanol Oxidation Kinetics: A Theoretical Analysis. in Journal of the Electrochemical Society
Electrochemical Soc Inc, Pennington., 157(9), B1279-B1289.
https://doi.org/10.1149/1.3446836

Bensmann B, Petkovska M, Vidaković-Koch T, Hanke-Rauschenbach R, Sundmacher K. Nonlinear Frequency Response of Electrochemical Methanol Oxidation Kinetics: A Theoretical Analysis. in Journal of the Electrochemical Society. 2010;157(9):B1279-B1289.
doi:10.1149/1.3446836 .

Bensmann, Boris, Petkovska, Menka, Vidaković-Koch, Tanja, Hanke-Rauschenbach, Richard, Sundmacher, Kai, "Nonlinear Frequency Response of Electrochemical Methanol Oxidation Kinetics: A Theoretical Analysis" in Journal of the Electrochemical Society, 157, no. 9 (2010):B1279-B1289,
https://doi.org/10.1149/1.3446836 . .

TY  - CONF
AU  - Bensmann, Boris
AU  - Petkovska, Menka
AU  - Hanke-Rauschenbach, Richard
AU  - Vidaković, Tanja
AU  - Sundmacher, Kai
PY  - 2008
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1206
AB  - Nonlinear frequency response analysis is proven as a powerful tool for the characterization of nonlinear systems. A set of frequency response functions (FRF), which contain different information, is obtained. In a number of cases, the second and higher order FRF corresponding to different kinetic models differ in shape, which enables reliable discrimination and identification of the correct model. The set of FRF can be used to estimate kinetic and equilibrium parameters, including those defining the system nonlinearity. An investigation of the direct methanol fuel cell anode kinetics is used to illustrate the method. This is an abstract of a paper presented at the 18th International Congress of Chemical and Process Engineering (Prague, Czech Republic 8/24-28/2008).
PB  - 18th International Congress of Chemical and Process Engineering, CHISA 2008
C3  - CHISA 2008 - 18th International Congress of Chemical and Process Engineering
T1  - Use of nonlinear frequency response analysis for model discrimination: Example - DMFC anode kinetics
UR  - https://hdl.handle.net/21.15107/rcub_technorep_1206
ER  - 

@conference{
author = "Bensmann, Boris and Petkovska, Menka and Hanke-Rauschenbach, Richard and Vidaković, Tanja and Sundmacher, Kai",
year = "2008",
abstract = "Nonlinear frequency response analysis is proven as a powerful tool for the characterization of nonlinear systems. A set of frequency response functions (FRF), which contain different information, is obtained. In a number of cases, the second and higher order FRF corresponding to different kinetic models differ in shape, which enables reliable discrimination and identification of the correct model. The set of FRF can be used to estimate kinetic and equilibrium parameters, including those defining the system nonlinearity. An investigation of the direct methanol fuel cell anode kinetics is used to illustrate the method. This is an abstract of a paper presented at the 18th International Congress of Chemical and Process Engineering (Prague, Czech Republic 8/24-28/2008).",
publisher = "18th International Congress of Chemical and Process Engineering, CHISA 2008",
journal = "CHISA 2008 - 18th International Congress of Chemical and Process Engineering",
title = "Use of nonlinear frequency response analysis for model discrimination: Example - DMFC anode kinetics",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1206"
}

Bensmann, B., Petkovska, M., Hanke-Rauschenbach, R., Vidaković, T.,& Sundmacher, K.. (2008). Use of nonlinear frequency response analysis for model discrimination: Example - DMFC anode kinetics. in CHISA 2008 - 18th International Congress of Chemical and Process Engineering
18th International Congress of Chemical and Process Engineering, CHISA 2008..
https://hdl.handle.net/21.15107/rcub_technorep_1206

Bensmann B, Petkovska M, Hanke-Rauschenbach R, Vidaković T, Sundmacher K. Use of nonlinear frequency response analysis for model discrimination: Example - DMFC anode kinetics. in CHISA 2008 - 18th International Congress of Chemical and Process Engineering. 2008;.
https://hdl.handle.net/21.15107/rcub_technorep_1206 .

Bensmann, Boris, Petkovska, Menka, Hanke-Rauschenbach, Richard, Vidaković, Tanja, Sundmacher, Kai, "Use of nonlinear frequency response analysis for model discrimination: Example - DMFC anode kinetics" in CHISA 2008 - 18th International Congress of Chemical and Process Engineering (2008),
https://hdl.handle.net/21.15107/rcub_technorep_1206 .

TY  - JOUR
AU  - Panić, Vladimir
AU  - Vidaković, Tanja
AU  - Dekanski, Aleksandar
AU  - Mišković-Stanković, Vesna
AU  - Nikolić, B.Z.
PY  - 2007
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1137
AB  - The capacitive properties of titanium electrodes with an active porous RuO2 coating were investigated in H2SO4 and NaCl solution by cyclic voltammetry and electrochemical impedance spectroscopy. Electrodes with two different masses of coating (thin and thick coating) were prepared from an ink suspension of the oxide synthesized by hydrolysis of ruthenium-ethoxide in ethanolic solution. The capacitive characteristics were found to be dependent on the coating mass and the electrolyte composition. It was shown that the impedance data of the prepared electrodes, registered at the open circuit potential, can be interpreted by a transmission line model of the equivalent electrical circuit. In this interpretation, the number of parallel branches containing resistor and capacitor in series is different for thin and thick coatings and in different electrolytes. More branches were required to describe the impedance behavior of the thick coating and to simulate the impedance data in NaCl solution. Simulation of the impedance data with the transmission line model of the equivalent circuit was also used to analyze the distribution of capacitance throughout the porous coating. The simulation indicated a more pronounced contribution of the capacitance of the outer coating layer to the total coating capacitance in the case of the proton-rich electrolyte. On the other hand, the presence of chloride ions in the electrolyte promoted a charging process at the inner coating surface, which is hardly accessible to the electrolyte.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Electroanalytical Chemistry
T1  - Capacitive properties of RuO2-coated titanium electrodes prepared by the alkoxide ink procedure
EP  - 128
IS  - 2
SP  - 120
VL  - 609
DO  - 10.1016/j.jelechem.2007.06.011
ER  - 

@article{
author = "Panić, Vladimir and Vidaković, Tanja and Dekanski, Aleksandar and Mišković-Stanković, Vesna and Nikolić, B.Z.",
year = "2007",
abstract = "The capacitive properties of titanium electrodes with an active porous RuO2 coating were investigated in H2SO4 and NaCl solution by cyclic voltammetry and electrochemical impedance spectroscopy. Electrodes with two different masses of coating (thin and thick coating) were prepared from an ink suspension of the oxide synthesized by hydrolysis of ruthenium-ethoxide in ethanolic solution. The capacitive characteristics were found to be dependent on the coating mass and the electrolyte composition. It was shown that the impedance data of the prepared electrodes, registered at the open circuit potential, can be interpreted by a transmission line model of the equivalent electrical circuit. In this interpretation, the number of parallel branches containing resistor and capacitor in series is different for thin and thick coatings and in different electrolytes. More branches were required to describe the impedance behavior of the thick coating and to simulate the impedance data in NaCl solution. Simulation of the impedance data with the transmission line model of the equivalent circuit was also used to analyze the distribution of capacitance throughout the porous coating. The simulation indicated a more pronounced contribution of the capacitance of the outer coating layer to the total coating capacitance in the case of the proton-rich electrolyte. On the other hand, the presence of chloride ions in the electrolyte promoted a charging process at the inner coating surface, which is hardly accessible to the electrolyte.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Electroanalytical Chemistry",
title = "Capacitive properties of RuO2-coated titanium electrodes prepared by the alkoxide ink procedure",
pages = "128-120",
number = "2",
volume = "609",
doi = "10.1016/j.jelechem.2007.06.011"
}

Panić, V., Vidaković, T., Dekanski, A., Mišković-Stanković, V.,& Nikolić, B.Z.. (2007). Capacitive properties of RuO2-coated titanium electrodes prepared by the alkoxide ink procedure. in Journal of Electroanalytical Chemistry
Elsevier Science Sa, Lausanne., 609(2), 120-128.
https://doi.org/10.1016/j.jelechem.2007.06.011

Panić V, Vidaković T, Dekanski A, Mišković-Stanković V, Nikolić B. Capacitive properties of RuO2-coated titanium electrodes prepared by the alkoxide ink procedure. in Journal of Electroanalytical Chemistry. 2007;609(2):120-128.
doi:10.1016/j.jelechem.2007.06.011 .

Panić, Vladimir, Vidaković, Tanja, Dekanski, Aleksandar, Mišković-Stanković, Vesna, Nikolić, B.Z., "Capacitive properties of RuO2-coated titanium electrodes prepared by the alkoxide ink procedure" in Journal of Electroanalytical Chemistry, 609, no. 2 (2007):120-128,
https://doi.org/10.1016/j.jelechem.2007.06.011 . .

TY  - JOUR
AU  - Panić, VV
AU  - Dekanski, Aleksandar
AU  - Vidaković, Tanja
AU  - Mišković-Stanković, Vesna
AU  - Jovanović, Bratislav Ž.
AU  - Nikolić, BZ
PY  - 2005
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/849
AB  - The oxidation of phenol on the RuO2-TiO2/Ti electrode has been studied by cyclic voltammetry, polarization measurements, electrochemical impedance spectroscopy and potentiostatic transients in H2SO4 and NaCl aqueous solutions. A reaction path with polymerization as the main reaction and side reactions after the initial step, similar to the reaction path on other electrode materials, is suggested. The formation of a phenoxy radical in a diffusion-controlled irreversible process is the initial step. The polymerization of phenoxy radicals leads to the formation of porous polyoxyphenylene film, strongly adherent to the electrode surface. The cyclic voltammetry measurements indicate side products, which could be, according to the literature, of quinone-like structure. Polyoxyphenylene film inhibits further oxidation of phenol, although complete electrode passivation was not observed. The presence of polyoxyphenylene film does not influence the pseudocapacitive behaviour of the electrode to a great extent, since the polyoxyphenylene film covers dominantly the coating surface, while active sites placed within coating cracks remain uncovered. The film seems to be permeable for hydrogen ions and water molecules.
PB  - Springer, New York
T2  - Journal of Solid State Electrochemistry
T1  - Oxidation of phenol on RuO2-TiO2/Ti anodes
EP  - 54
IS  - 1
SP  - 43
VL  - 9
DO  - 10.1007/s10008-004-0559-0
ER  - 

@article{
author = "Panić, VV and Dekanski, Aleksandar and Vidaković, Tanja and Mišković-Stanković, Vesna and Jovanović, Bratislav Ž. and Nikolić, BZ",
year = "2005",
abstract = "The oxidation of phenol on the RuO2-TiO2/Ti electrode has been studied by cyclic voltammetry, polarization measurements, electrochemical impedance spectroscopy and potentiostatic transients in H2SO4 and NaCl aqueous solutions. A reaction path with polymerization as the main reaction and side reactions after the initial step, similar to the reaction path on other electrode materials, is suggested. The formation of a phenoxy radical in a diffusion-controlled irreversible process is the initial step. The polymerization of phenoxy radicals leads to the formation of porous polyoxyphenylene film, strongly adherent to the electrode surface. The cyclic voltammetry measurements indicate side products, which could be, according to the literature, of quinone-like structure. Polyoxyphenylene film inhibits further oxidation of phenol, although complete electrode passivation was not observed. The presence of polyoxyphenylene film does not influence the pseudocapacitive behaviour of the electrode to a great extent, since the polyoxyphenylene film covers dominantly the coating surface, while active sites placed within coating cracks remain uncovered. The film seems to be permeable for hydrogen ions and water molecules.",
publisher = "Springer, New York",
journal = "Journal of Solid State Electrochemistry",
title = "Oxidation of phenol on RuO2-TiO2/Ti anodes",
pages = "54-43",
number = "1",
volume = "9",
doi = "10.1007/s10008-004-0559-0"
}

Panić, V., Dekanski, A., Vidaković, T., Mišković-Stanković, V., Jovanović, B. Ž.,& Nikolić, B.. (2005). Oxidation of phenol on RuO2-TiO2/Ti anodes. in Journal of Solid State Electrochemistry
Springer, New York., 9(1), 43-54.
https://doi.org/10.1007/s10008-004-0559-0

Panić V, Dekanski A, Vidaković T, Mišković-Stanković V, Jovanović BŽ, Nikolić B. Oxidation of phenol on RuO2-TiO2/Ti anodes. in Journal of Solid State Electrochemistry. 2005;9(1):43-54.
doi:10.1007/s10008-004-0559-0 .

Panić, VV, Dekanski, Aleksandar, Vidaković, Tanja, Mišković-Stanković, Vesna, Jovanović, Bratislav Ž., Nikolić, BZ, "Oxidation of phenol on RuO2-TiO2/Ti anodes" in Journal of Solid State Electrochemistry, 9, no. 1 (2005):43-54,
https://doi.org/10.1007/s10008-004-0559-0 . .

TY  - JOUR
AU  - Gojković, Snežana Lj.
AU  - Vidaković, Tanja
AU  - Durović, DR
PY  - 2003
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/586
AB  - Methanol electrooxidation was investigated on the carbon-supported PtRu electrocatalyst (1:1 atomic ratio) in acid media. X-ray diffraction measurement indicated alloying of Pt and Ru. Cyclic voltammetry of the sample reflects the amount of Ruin the catalyst and its ability to adsorb OH radicals. Tafel plots for the oxidation of 0.02-3 M methanol in the solutions containing 0.05-1 M HClO4 and in the temperature range 27-40 degreesC showed reasonably well-defined linear region with the slope of about 115 mV dec(-1) at the low currents, irrespective of the experimental conditions employed. Reaction order with respect to methanol was found to be 0.5. A correlation between methanol oxidation rate and pseudocapacitive current of OH adsorption on Ru sites was established. It was proposed that bifunctional mechanism is operative with the reaction between methanol residues adsorbed on Pt sites and OH radicals adsorbed on Ru sites as the rate-determining step.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Electrochimica Acta
T1  - Kinetic study of methanol oxidation on carbon-supported PtRu electrocatalyst
EP  - 3614
IS  - 24
SP  - 3607
VL  - 48
DO  - 10.1016/S0013-4686(03)00481-X
ER  - 

@article{
author = "Gojković, Snežana Lj. and Vidaković, Tanja and Durović, DR",
year = "2003",
abstract = "Methanol electrooxidation was investigated on the carbon-supported PtRu electrocatalyst (1:1 atomic ratio) in acid media. X-ray diffraction measurement indicated alloying of Pt and Ru. Cyclic voltammetry of the sample reflects the amount of Ruin the catalyst and its ability to adsorb OH radicals. Tafel plots for the oxidation of 0.02-3 M methanol in the solutions containing 0.05-1 M HClO4 and in the temperature range 27-40 degreesC showed reasonably well-defined linear region with the slope of about 115 mV dec(-1) at the low currents, irrespective of the experimental conditions employed. Reaction order with respect to methanol was found to be 0.5. A correlation between methanol oxidation rate and pseudocapacitive current of OH adsorption on Ru sites was established. It was proposed that bifunctional mechanism is operative with the reaction between methanol residues adsorbed on Pt sites and OH radicals adsorbed on Ru sites as the rate-determining step.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Electrochimica Acta",
title = "Kinetic study of methanol oxidation on carbon-supported PtRu electrocatalyst",
pages = "3614-3607",
number = "24",
volume = "48",
doi = "10.1016/S0013-4686(03)00481-X"
}

Gojković, S. Lj., Vidaković, T.,& Durović, D.. (2003). Kinetic study of methanol oxidation on carbon-supported PtRu electrocatalyst. in Electrochimica Acta
Pergamon-Elsevier Science Ltd, Oxford., 48(24), 3607-3614.
https://doi.org/10.1016/S0013-4686(03)00481-X

Gojković SL, Vidaković T, Durović D. Kinetic study of methanol oxidation on carbon-supported PtRu electrocatalyst. in Electrochimica Acta. 2003;48(24):3607-3614.
doi:10.1016/S0013-4686(03)00481-X .

Gojković, Snežana Lj., Vidaković, Tanja, Durović, DR, "Kinetic study of methanol oxidation on carbon-supported PtRu electrocatalyst" in Electrochimica Acta, 48, no. 24 (2003):3607-3614,
https://doi.org/10.1016/S0013-4686(03)00481-X . .

TY  - JOUR
AU  - Panić, V
AU  - Vidaković, Tanja
AU  - Gojković, Snežana Lj.
AU  - Dekanski, Aleksandar
AU  - Milonjić, Slobodan K.
AU  - Nikolić, Branislav Ž.
PY  - 2003
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/527
AB  - Preparation of RuOxHy/carbon black nanocomposite material was performed by the impregnation method starting from RuOxHy sol as a precursor. Black Pearls 2000(R) (BP) and Vulcan(R) XC-72 R (XC) were used as supporting materials. Samples of the composite were calcined in nitrogen atmosphere at temperatures from 130 to 450 degreesC. Chemical and structural characterization of the precursor and the composites was performed by using energy-dispersive X-ray fluorescence spectroscopy (EDXRFS), X-ray diffraction (XRD) and thermogravimetric analysis (TGA). These techniques showed that the oxide impregnated into carbon support is hydrous and amorphous. The amorphous structure is maintained if the composite is calcined up to 300 degreesC, while the lowintensity peak at 2theta position that corresponds to the most intensive peak of the rutile structure was registered at 450 degreesC. The capacitance of the composite was determined using cyclic voltammetry. It was found that the capacitance is dependent on calcination temperature and surface area of the carbon black support. The highest specific capacitance of about 700 F g(-1) of composite was registered for RuOxHy supported on BP and calcined at 300 degreesC while four times lower values was obtained for RuOxHy supported on XC. The capacitance measurements indicated that XC-supported RuOXHy composite is highly porous while BP-supported one is more compact.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Electrochimica Acta
T1  - The properties of carbon-supported hydrous ruthenium oxide obtained from RuOxHy sol
EP  - 3813
IS  - 25-26
SP  - 3805
VL  - 48
DO  - 10.1016/S0013-4686(03)00514-0
ER  - 

@article{
author = "Panić, V and Vidaković, Tanja and Gojković, Snežana Lj. and Dekanski, Aleksandar and Milonjić, Slobodan K. and Nikolić, Branislav Ž.",
year = "2003",
abstract = "Preparation of RuOxHy/carbon black nanocomposite material was performed by the impregnation method starting from RuOxHy sol as a precursor. Black Pearls 2000(R) (BP) and Vulcan(R) XC-72 R (XC) were used as supporting materials. Samples of the composite were calcined in nitrogen atmosphere at temperatures from 130 to 450 degreesC. Chemical and structural characterization of the precursor and the composites was performed by using energy-dispersive X-ray fluorescence spectroscopy (EDXRFS), X-ray diffraction (XRD) and thermogravimetric analysis (TGA). These techniques showed that the oxide impregnated into carbon support is hydrous and amorphous. The amorphous structure is maintained if the composite is calcined up to 300 degreesC, while the lowintensity peak at 2theta position that corresponds to the most intensive peak of the rutile structure was registered at 450 degreesC. The capacitance of the composite was determined using cyclic voltammetry. It was found that the capacitance is dependent on calcination temperature and surface area of the carbon black support. The highest specific capacitance of about 700 F g(-1) of composite was registered for RuOxHy supported on BP and calcined at 300 degreesC while four times lower values was obtained for RuOxHy supported on XC. The capacitance measurements indicated that XC-supported RuOXHy composite is highly porous while BP-supported one is more compact.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Electrochimica Acta",
title = "The properties of carbon-supported hydrous ruthenium oxide obtained from RuOxHy sol",
pages = "3813-3805",
number = "25-26",
volume = "48",
doi = "10.1016/S0013-4686(03)00514-0"
}

Panić, V., Vidaković, T., Gojković, S. Lj., Dekanski, A., Milonjić, S. K.,& Nikolić, B. Ž.. (2003). The properties of carbon-supported hydrous ruthenium oxide obtained from RuOxHy sol. in Electrochimica Acta
Pergamon-Elsevier Science Ltd, Oxford., 48(25-26), 3805-3813.
https://doi.org/10.1016/S0013-4686(03)00514-0

Panić V, Vidaković T, Gojković SL, Dekanski A, Milonjić SK, Nikolić BŽ. The properties of carbon-supported hydrous ruthenium oxide obtained from RuOxHy sol. in Electrochimica Acta. 2003;48(25-26):3805-3813.
doi:10.1016/S0013-4686(03)00514-0 .

Panić, V, Vidaković, Tanja, Gojković, Snežana Lj., Dekanski, Aleksandar, Milonjić, Slobodan K., Nikolić, Branislav Ž., "The properties of carbon-supported hydrous ruthenium oxide obtained from RuOxHy sol" in Electrochimica Acta, 48, no. 25-26 (2003):3805-3813,
https://doi.org/10.1016/S0013-4686(03)00514-0 . .

TY  - JOUR
AU  - Gojković, Snežana Lj.
AU  - Vidaković, Tanja
PY  - 2001
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/374
AB  - Methanol oxidation was investigated on the following Pt catalysts: bare Pt electrode, Pt covered by nafion (R) film, and pt catalysts supported on high area carbons in the form of an ink. The reaction was carried out using slow linear potential sweep and potentiostatic steps. Active surface area of Pt particles was estimated from hydrogen desorption charge on cyclic voltammograms. The influence of Nafion film, Pt loading, type of carbon support, and methanol concentration were studied. No influence of Nafion (R) film on kinetic parameters of methanol oxidation was found. Tafel slope on smooth Pt was found to be about 90 mV dec(-1), while on supported Pt catalysts time depende(n)t values between 140 and 90 mV dec(-1) were estimated from the potentiostatic decays by using data between 0.5 and 5 min. Specific activity was slightly dependent on Pt loading with flat maximum at about 20%, Pt. Activity of Pt/SAB catalyst was two to three times higher than that of Pt/BP and Pt/XC-72 catalysts.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Electrochimica Acta
T1  - Methanol oxidation on an ink type electrode using Pt supported on high area carbons
EP  - 642
IS  - 4
SP  - 633
VL  - 47
DO  - 10.1016/S0013-4686(01)00730-7
ER  - 

@article{
author = "Gojković, Snežana Lj. and Vidaković, Tanja",
year = "2001",
abstract = "Methanol oxidation was investigated on the following Pt catalysts: bare Pt electrode, Pt covered by nafion (R) film, and pt catalysts supported on high area carbons in the form of an ink. The reaction was carried out using slow linear potential sweep and potentiostatic steps. Active surface area of Pt particles was estimated from hydrogen desorption charge on cyclic voltammograms. The influence of Nafion film, Pt loading, type of carbon support, and methanol concentration were studied. No influence of Nafion (R) film on kinetic parameters of methanol oxidation was found. Tafel slope on smooth Pt was found to be about 90 mV dec(-1), while on supported Pt catalysts time depende(n)t values between 140 and 90 mV dec(-1) were estimated from the potentiostatic decays by using data between 0.5 and 5 min. Specific activity was slightly dependent on Pt loading with flat maximum at about 20%, Pt. Activity of Pt/SAB catalyst was two to three times higher than that of Pt/BP and Pt/XC-72 catalysts.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Electrochimica Acta",
title = "Methanol oxidation on an ink type electrode using Pt supported on high area carbons",
pages = "642-633",
number = "4",
volume = "47",
doi = "10.1016/S0013-4686(01)00730-7"
}

Gojković, S. Lj.,& Vidaković, T.. (2001). Methanol oxidation on an ink type electrode using Pt supported on high area carbons. in Electrochimica Acta
Pergamon-Elsevier Science Ltd, Oxford., 47(4), 633-642.
https://doi.org/10.1016/S0013-4686(01)00730-7

Gojković SL, Vidaković T. Methanol oxidation on an ink type electrode using Pt supported on high area carbons. in Electrochimica Acta. 2001;47(4):633-642.
doi:10.1016/S0013-4686(01)00730-7 .

Gojković, Snežana Lj., Vidaković, Tanja, "Methanol oxidation on an ink type electrode using Pt supported on high area carbons" in Electrochimica Acta, 47, no. 4 (2001):633-642,
https://doi.org/10.1016/S0013-4686(01)00730-7 . .