Determination of competitive adsorption isotherms applying the nonlinear frequency response method Part II. Experimental demonstration
Само за регистроване кориснике
2009
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This paper demonstrates an experimental application of the nonlinear frequency response (FR) method extension to determine adsorption isotherms of binary mixtures. This method, based on the analysis of the response of a chromatographic column subjected to the sinusoidal inlet concentration changes, is shown to be an alternative for isotherm determination. The critical issue related to the successful application of the method is to reach experimentally the low frequency asymptotic behaviour of the corresponding frequency response functions (FRFs). Although, there are different possibilities to perform periodical inlet concentration changes, in this paper only simultaneous changes for both components were considered. The adsorption of phenol and 2-phenylethanol on octadecyl silica was analyzed experimentally using a mixture of methanol and water as a solvent. Parameters of competitive isotherms were also estimated for comparison using the classical perturbation method. Despite certain di...fferences between competitive isotherms estimated with the two methods that were found, the obtained results show the potential of the nonlinear FR method for measuring competitive isotherms.
Кључне речи:
Adsorption isotherms / Binary mixture / Liquid chromatography / Nonlinear frequency response / Harmonic analysis / Higher order frequency response functions / Parameter estimationИзвор:
Journal of Chromatography A, 2009, 1216, 33, 6108-6118Издавач:
- Elsevier, Amsterdam
DOI: 10.1016/j.chroma.2009.06.052
ISSN: 0021-9673
PubMed: 19586634
WoS: 000268907000004
Scopus: 2-s2.0-67650736192
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Ilić, Milica AU - Petkovska, Menka AU - Seidel-Morgenstern, Andreas PY - 2009 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1429 AB - This paper demonstrates an experimental application of the nonlinear frequency response (FR) method extension to determine adsorption isotherms of binary mixtures. This method, based on the analysis of the response of a chromatographic column subjected to the sinusoidal inlet concentration changes, is shown to be an alternative for isotherm determination. The critical issue related to the successful application of the method is to reach experimentally the low frequency asymptotic behaviour of the corresponding frequency response functions (FRFs). Although, there are different possibilities to perform periodical inlet concentration changes, in this paper only simultaneous changes for both components were considered. The adsorption of phenol and 2-phenylethanol on octadecyl silica was analyzed experimentally using a mixture of methanol and water as a solvent. Parameters of competitive isotherms were also estimated for comparison using the classical perturbation method. Despite certain differences between competitive isotherms estimated with the two methods that were found, the obtained results show the potential of the nonlinear FR method for measuring competitive isotherms. PB - Elsevier, Amsterdam T2 - Journal of Chromatography A T1 - Determination of competitive adsorption isotherms applying the nonlinear frequency response method Part II. Experimental demonstration EP - 6118 IS - 33 SP - 6108 VL - 1216 DO - 10.1016/j.chroma.2009.06.052 ER -
@article{ author = "Ilić, Milica and Petkovska, Menka and Seidel-Morgenstern, Andreas", year = "2009", abstract = "This paper demonstrates an experimental application of the nonlinear frequency response (FR) method extension to determine adsorption isotherms of binary mixtures. This method, based on the analysis of the response of a chromatographic column subjected to the sinusoidal inlet concentration changes, is shown to be an alternative for isotherm determination. The critical issue related to the successful application of the method is to reach experimentally the low frequency asymptotic behaviour of the corresponding frequency response functions (FRFs). Although, there are different possibilities to perform periodical inlet concentration changes, in this paper only simultaneous changes for both components were considered. The adsorption of phenol and 2-phenylethanol on octadecyl silica was analyzed experimentally using a mixture of methanol and water as a solvent. Parameters of competitive isotherms were also estimated for comparison using the classical perturbation method. Despite certain differences between competitive isotherms estimated with the two methods that were found, the obtained results show the potential of the nonlinear FR method for measuring competitive isotherms.", publisher = "Elsevier, Amsterdam", journal = "Journal of Chromatography A", title = "Determination of competitive adsorption isotherms applying the nonlinear frequency response method Part II. Experimental demonstration", pages = "6118-6108", number = "33", volume = "1216", doi = "10.1016/j.chroma.2009.06.052" }
Ilić, M., Petkovska, M.,& Seidel-Morgenstern, A.. (2009). Determination of competitive adsorption isotherms applying the nonlinear frequency response method Part II. Experimental demonstration. in Journal of Chromatography A Elsevier, Amsterdam., 1216(33), 6108-6118. https://doi.org/10.1016/j.chroma.2009.06.052
Ilić M, Petkovska M, Seidel-Morgenstern A. Determination of competitive adsorption isotherms applying the nonlinear frequency response method Part II. Experimental demonstration. in Journal of Chromatography A. 2009;1216(33):6108-6118. doi:10.1016/j.chroma.2009.06.052 .
Ilić, Milica, Petkovska, Menka, Seidel-Morgenstern, Andreas, "Determination of competitive adsorption isotherms applying the nonlinear frequency response method Part II. Experimental demonstration" in Journal of Chromatography A, 1216, no. 33 (2009):6108-6118, https://doi.org/10.1016/j.chroma.2009.06.052 . .