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Title: Heterogeneous three-site lattice model for adsorption of aromatics in ZSM-5 zeolites: Temperature dependence of adsorption isotherms

Abstract

The three-site lattice model of collective localized adsorption of aromatics in ZSM-5 zeolites, presented in previous publications, is extended by taking into account the effects of energetic heterogeneity of the sites of the same type. The appropriate theoretical equations are derived and used for simultaneous description of the experimental adsorption isotherms and heats of adsorption of benzene and p-xylene in silicalite at 303 K. It is shown that taking into account this additional level of heterogeneity leads to a much better description of both the adsorption isotherms and the related heats of adsorption in these systems. The extended model also allows one to predict correctly the adsorption isotherms of benzene and p-xylene in silicalite at different temperatures using the parameters found at one temperature.

Authors:
; ; ;
Publication Date:
Research Org.:
Maria Curie-Sklodowska Univ., Lublin (PL)
OSTI Identifier:
20000535
Report Number(s):
CONF-9808111-
Journal ID: ISSN 0743-7463; LANGD5
Resource Type:
Journal Article
Journal Name:
Langmuir
Additional Journal Information:
Journal Volume: 15; Journal Issue: 18; Conference: Third international symposium on effects of surface heterogeneity in adsorption and catalysis on solids, Torun (PL), 08/09/1998--08/16/1998; Other Information: PBD: 31 Aug 1999; Journal ID: ISSN 0743-7463
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; ZEOLITES; SORPTIVE PROPERTIES; BENZENE; XYLENE-PARA; ADSORPTION; ADSORPTION ISOTHERMS; MATHEMATICAL MODELS; ADSORPTION HEAT

Citation Formats

Narkiewicz-Michalek, J., Szabelski, P., Rudzinski, W., and Chiang, A.S.T. Heterogeneous three-site lattice model for adsorption of aromatics in ZSM-5 zeolites: Temperature dependence of adsorption isotherms. United States: N. p., 1999. Web. doi:10.1021/la9814900.
Narkiewicz-Michalek, J., Szabelski, P., Rudzinski, W., & Chiang, A.S.T. Heterogeneous three-site lattice model for adsorption of aromatics in ZSM-5 zeolites: Temperature dependence of adsorption isotherms. United States. doi:10.1021/la9814900.
Narkiewicz-Michalek, J., Szabelski, P., Rudzinski, W., and Chiang, A.S.T. Tue . "Heterogeneous three-site lattice model for adsorption of aromatics in ZSM-5 zeolites: Temperature dependence of adsorption isotherms". United States. doi:10.1021/la9814900.
@article{osti_20000535,
title = {Heterogeneous three-site lattice model for adsorption of aromatics in ZSM-5 zeolites: Temperature dependence of adsorption isotherms},
author = {Narkiewicz-Michalek, J. and Szabelski, P. and Rudzinski, W. and Chiang, A.S.T.},
abstractNote = {The three-site lattice model of collective localized adsorption of aromatics in ZSM-5 zeolites, presented in previous publications, is extended by taking into account the effects of energetic heterogeneity of the sites of the same type. The appropriate theoretical equations are derived and used for simultaneous description of the experimental adsorption isotherms and heats of adsorption of benzene and p-xylene in silicalite at 303 K. It is shown that taking into account this additional level of heterogeneity leads to a much better description of both the adsorption isotherms and the related heats of adsorption in these systems. The extended model also allows one to predict correctly the adsorption isotherms of benzene and p-xylene in silicalite at different temperatures using the parameters found at one temperature.},
doi = {10.1021/la9814900},
journal = {Langmuir},
issn = {0743-7463},
number = 18,
volume = 15,
place = {United States},
year = {1999},
month = {8}
}