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论文类型：期刊论文

发表时间：2010-02-20

发表刊物：CATALYSIS COMMUNICATIONS

收录刊物：SCIE、EI

卷号：11

期号：6

页面范围：513-517

ISSN号：1566-7367

关键字：Hierarchical structure; Aggregates; Methane dehydroaromatization; Mo/HMCM-22-HA; Durability of catalyst

摘要：A feasible route, preparing hierarchical structure zeolite (MCM-22 and ZSM-5) aggregates catalysts directly without using any secondary template, was presented to improve catalytic performance dramatically in methane clehydroaromatization reaction. The zeolites hierarchical aggregates possessed both mesopores and the inherent micropores, which was beneficial to the effective combination Mo species with zeolite acidic sites and giving rise to high quality bifunctional catalysts. Besides, mesopores provided easier access to the active sites for both reactant and larger product molecules. All these led to very high methane conversion and very strong coking-resistance and thus exceptional catalyst stability. (C) 2009 Elsevier B.V. All rights reserved.