文献类型：期刊文献

英文题名：Effect of Different Ratios of Si-Al of Zeolite HZSM-5 on the Activity of Bifunctional Catalysts Upon Dimethyl Ether Synthesis

作者：Xu, Q.[1];Lan, P.[1,2];Huang, K.[1];Yan, Y.[1]

机构：[1]E China Univ Sci & Technol, Res Ctr Biomass Energy, Shanghai 200237, Peoples R China;[2]Guangxi Univ Nationalities, Sch Chem & Ecoengn, Nanning, Peoples R China

年份：2011

卷号：29

期号：10

起止页码：1080

外文期刊名：PETROLEUM SCIENCE AND TECHNOLOGY

收录：;EI(收录号：20111313881323);WOS:【SCI-EXPANDED(收录号:WOS:000288962300010)】；

基金：Financial support was provided by the 973 State Key Fundamental Research Development Program of China (No. 2007CB210206). The authors express their sincere gratitude to those who contributed to this research.

语种：英文

外文关键词：bifunctional catalyst; dimethyl ether; direct synthesis; zeolite

摘要：Four bifunctional catalysts were prepared by physical mixing of a commercial methanol synthesis catalyst (JC207 catalyst, a catalyst for methanol synthesis, which has been industrialized in China) with zeolite HZSM-5 (Si-Al ratios of 25, 38, 50, 150) as a methanol dehydration catalyst. The bifunctional catalyst (JC207/HZSM-5 [Si/Al = 38]) showed better performance, which can be attributed to more acidic sites with moderate strength of zeolite, and which can control methanol dehydration rate, which is a rate determining step.