Alkaline-mediated mesoporous mordenite zeolites for acid-catalyzed conversions
Alkaline-mediated mesoporous mordenite zeolites for acid-catalyzed conversions
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DOI：
10.1016/j.jcat.2007.07.020
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发表时间：
2007-10-01
影响因子：
7.3
通讯作者：
Perez-Ramirez, Javier
中科院分区：
文献类型：
--
作者：
Groen, Johan C.;Sano, Tsuneji;Perez-Ramirez, Javier
介绍了中孔丝光沸石的制备及其在苯与乙烯液相烷基化反应中的应用。以合成的高硅丝光沸石为原料，通过碱处理控制硅的萃取，得到了硅铝比为20-30的中孔丝光沸石。除了大量的中孔性发展，组合的微孔和中孔沸石显示出保留的布朗斯台德酸性质，这是非常有吸引力的酸催化反应时的目标。中孔丝光沸石的催化测试发现，由于在缩短的微孔中改善的物理传输和保留的高密度酸位点之间的独特相互作用，在苯烷基化中具有上级性能。(c)2007年爱思唯尔公司All rights reserved.
The preparation of mesoporous mordenite zeolite and its subsequent application in the liquid-phase alkylation of benzene with ethylene is discussed. Mesoporous mordenite was obtained by controlled silicon extraction on alkaline treatment of successfully synthesized high-silica mordenite zeolites with molar Si/Al ratios in the range of 20-30. Besides substantial mesoporosity development, the combined microporous and mesoporous zeolites show preserved Bronsted acidic properties, which are highly attractive when acid-catalyzed reactions are targeted. Catalytic testing of the mesoporous mordenite found superior performance in benzene alkylation due to the unique interplay between improved physical transport in the shortened micropores and the preserved high density of acid sites. (c) 2007 Elsevier Inc. All rights reserved.