Identification of adsorption kinetics with dual mechanisms by nonlinear frequency response method
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2001
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A characteristic example of the inability of the classical linear frequency response (FR) method to identify the correct kinetic mechanism is adsorption of n-hexane on silicalite-1. The linear FR has resulted in bimodal FR characteristic functions which fit equally well three different mechanisms, namely, nonisothermal micropore diffusion, two independent isothermal diffusion processes, and isothermal diffusion-rearrangement process. In this study, it is shown that the highest order FR functions obtained from the nonlinear FR can be used to discriminate among these three mechanisms. Starting from the nonlinear models, theoretical expressions are derived for the first and second order FR functions corresponding to these three mechanisms and it is shown that different shapes of the second order FR functions are obtained for each mechanisms. This will enable identification of the actual mechanisms form nonlinear FR data.
Izvor:
Chemie-Ingenieur-Technik, 2001, 73, 6, 736-Izdavač:
- Wiley-VCH Verlag Gmbh, Weinheim
DOI: 10.1002/1522-2640(200106)73:6736::AID-CITE73622223.0.CO;2-C
ISSN: 0009-286X
Scopus: 2-s2.0-0035357551
Institucija/grupa
Tehnološko-metalurški fakultetTY - JOUR AU - Petkovska, Menka PY - 2001 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/344 AB - A characteristic example of the inability of the classical linear frequency response (FR) method to identify the correct kinetic mechanism is adsorption of n-hexane on silicalite-1. The linear FR has resulted in bimodal FR characteristic functions which fit equally well three different mechanisms, namely, nonisothermal micropore diffusion, two independent isothermal diffusion processes, and isothermal diffusion-rearrangement process. In this study, it is shown that the highest order FR functions obtained from the nonlinear FR can be used to discriminate among these three mechanisms. Starting from the nonlinear models, theoretical expressions are derived for the first and second order FR functions corresponding to these three mechanisms and it is shown that different shapes of the second order FR functions are obtained for each mechanisms. This will enable identification of the actual mechanisms form nonlinear FR data. PB - Wiley-VCH Verlag Gmbh, Weinheim T2 - Chemie-Ingenieur-Technik T1 - Identification of adsorption kinetics with dual mechanisms by nonlinear frequency response method IS - 6 SP - 736 VL - 73 DO - 10.1002/1522-2640(200106)73:6736::AID-CITE73622223.0.CO;2-C ER -
@article{ author = "Petkovska, Menka", year = "2001", abstract = "A characteristic example of the inability of the classical linear frequency response (FR) method to identify the correct kinetic mechanism is adsorption of n-hexane on silicalite-1. The linear FR has resulted in bimodal FR characteristic functions which fit equally well three different mechanisms, namely, nonisothermal micropore diffusion, two independent isothermal diffusion processes, and isothermal diffusion-rearrangement process. In this study, it is shown that the highest order FR functions obtained from the nonlinear FR can be used to discriminate among these three mechanisms. Starting from the nonlinear models, theoretical expressions are derived for the first and second order FR functions corresponding to these three mechanisms and it is shown that different shapes of the second order FR functions are obtained for each mechanisms. This will enable identification of the actual mechanisms form nonlinear FR data.", publisher = "Wiley-VCH Verlag Gmbh, Weinheim", journal = "Chemie-Ingenieur-Technik", title = "Identification of adsorption kinetics with dual mechanisms by nonlinear frequency response method", number = "6", pages = "736", volume = "73", doi = "10.1002/1522-2640(200106)73:6736::AID-CITE73622223.0.CO;2-C" }
Petkovska, M.. (2001). Identification of adsorption kinetics with dual mechanisms by nonlinear frequency response method. in Chemie-Ingenieur-Technik Wiley-VCH Verlag Gmbh, Weinheim., 73(6), 736. https://doi.org/10.1002/1522-2640(200106)73:6736::AID-CITE73622223.0.CO;2-C
Petkovska M. Identification of adsorption kinetics with dual mechanisms by nonlinear frequency response method. in Chemie-Ingenieur-Technik. 2001;73(6):736. doi:10.1002/1522-2640(200106)73:6736::AID-CITE73622223.0.CO;2-C .
Petkovska, Menka, "Identification of adsorption kinetics with dual mechanisms by nonlinear frequency response method" in Chemie-Ingenieur-Technik, 73, no. 6 (2001):736, https://doi.org/10.1002/1522-2640(200106)73:6736::AID-CITE73622223.0.CO;2-C . .