Počet záznamů: 1

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

  1. 1.
    0333790 - UFCH-W 2010 RIV US eng J - Článek v odborném periodiku
    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
    Grant CEP: GA AV ČR 1QS400400560; GA ČR GD203/08/H032
    Výzkumný záměr: CEZ:AV0Z40400503
    Klíčová slova: zeolite architecture * cage effect * acidity
    Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
    Impakt faktor: 5.288, rok: 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.
    Trvalý link: http://hdl.handle.net/11104/0178698