Počet záznamů: 1

Catalytic transformation of methyl benzenes over zeolite catalysts

  1. 1.
    0358690 - UFCH-W 2012 RIV NL eng J - Článek v odborném periodiku
    Al-Khattaf, S. - Akhtar, M. N. - Odedairo, T. - Aitani, A. - Tukur, N. M. - Kubů, Martin - Musilová, Zuzana - Čejka, Jiří
    Catalytic transformation of methyl benzenes over zeolite catalysts.
    Applied Catalysis A - General. Roč. 394, 1-2 (2011), s. 176-190 ISSN 0926-860X
    Grant CEP: GA ČR GD203/08/H032
    Výzkumný záměr: CEZ:AV0Z40400503
    Klíčová slova: ZSM-5 * TNU-9 * mordenite
    Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
    Impakt faktor: 3.903, rok: 2011

    Catalytic transformation of three methyl benzenes (toluene, m-xylene, and 1,2,4-trimethyl benzene) has been investigated over ZSM-5, TNU-9, mordenite and SSZ-33 catalysts in a novel riser simulator at different operating conditions. Catalytic experiments were carried out in the temperature range of 300-400 degrees C to understand the transformation of these alkyl benzenes over large pore (mordenite and SSZ-33) in contrast to medium-pore (ZSM-5 and TNU-9) zeolite-based catalysts. The effect of reaction conditions on the isomerization to disproportionation product ratio, distribution of trimethylbenzene (TMB) isomers, and p-xylene/o-xylene ratios are reported. The sequence of reactivity of the three alkyl benzenes depends upon the pore structure of zeolites. The zeolite structure controls primarily the diffusion of reactants and products while the acidity of these zeolites is of a secondary importance.
    Trvalý link: http://hdl.handle.net/11104/0006408