Title: High-temperature low-pressure adsorption of branched C-5-C-8 alkanes on zeolite beta, ZSM-5, ZSM-22, zeolite Y, and mordenite
Authors: Denayer, JF ×
Souverijns, W
Jacobs, Pierre
Martens, Johan
Baron, GV #
Issue Date: 1998
Series Title: Journal of Physical Chemistry B vol:102 issue:23 pages:4588-4597
Conference: date:Free Univ Brussels, Dept Chem Engn, B-1050 Brussels, Belgium; Katholieke Univ Leuven, Ctr Surface Chem & Catalysis, B-3001 Heverlee, Belgium
Abstract: Henry constants, low-coverage adsorption enthalpies, van't Hoff preexponential factors, and separation factors of C-5-C-8 alkanes are determined on beta, ZSM-5, ZSM-22, mordenite, and Y zeolites at 473-648 K using tracer and perturbation chromatographic techniques. Three different adsorption behaviors were encountered depending on the zeolite type: (1) nonselective competitive adsorption of isoalkanes and n-alkanes inside the micropores (zeolite Y), (2) preferential adsorption of the n-alkanes over the isoalkanes inside the micropores (beta, ZSM-5 and mordenite), and (3) selective adsorption of the n-alkanes in the micropores and of the isoalkanes on the external crystal surfaces (ZSM-22). Linear and mono-and multibranched alkanes can be separated on columns of ZSM-22 and beta zeolites.
ISSN: 1089-5647
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Centre for Surface Chemistry and Catalysis
× corresponding author
# (joint) last author

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