A feasible way to enhance effectively the catalytic performance of methane dehydroaromatization
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- 作者：Naibo Chu ; Jianhua Yang ; Jinqu Wang ; Suxia Yu ; Jinming Lu ; Yan Zhang ; Dehong Yin
- 关键词：Hierarchical structure ; Aggregates ; Methane dehydroaromatization ; Mo/HMCM-22-HA ; Durability of catalyst
- 刊名：Catalysis Communications
- 出版年：2010
- 出版时间：20 February 2010
- 年：2010
- 卷：11
- 期：6
- 页码：513-517
- 全文大小：461 K
文摘
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 dehydroaromatization 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.