The role of the zeolite channel architecture and acidity on the activity and selectivity in aromatic transformations: The effect of zeolite cages in SSZ-35 zeolite

0333790 - ÚFCH JH 2010 RIV US eng J - Journal Article
Žilková, Naděžda - Voláková, Martina - Gil, B. - Zones, S. I. - Burton, A. W. - Chen, C.-Y. - Musilová, Zuzana - Košová, Gabriela - Čejka, Jiří
The role of the zeolite channel architecture and acidity on the activity and selectivity in aromatic transformations: The effect of zeolite cages in SSZ-35 zeolite.
Journal of Catalysis. Roč. 266, č. 1 (2009), s. 79-91. ISSN 0021-9517. E-ISSN 1090-2694
R&D Projects: GA AV ČR 1QS400400560; GA ČR GD203/08/H032
Institutional research plan: CEZ:AV0Z40400503
Keywords : zeolite architecture * cage effect * acidity
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 5.288, year: 2009

A series of zeolites differing in the channel architecture and acidity was investigated in toluene disproportionation, together with toluene and p-xylene alkylation with isopropyl alcohol. Zeolites with one- to three-dimensional 10-ring and 12-ring channels with and without cages, and those having 12-12-10 and 12-10-10-ring channel systems were studied. It was shown that general relationship of increasing zeolite activity with increasing pore diameter and pore connectivity is not valid as the size of some 12-ring channels (Beta, MCM-68) is comparable with 10-ring channels (ZSM-5, SSZ-35). In addition, the presence of cages in the structure of SSZ-35 and MCM-58 attributes the unusual catalytic behavior of these zeolites. SSZ-35 and MCM-58 zeolites behave in both toluene reactions such as three-dimensional large-pore zeolites.
Permanent Link: http://hdl.handle.net/11104/0178698