Effect of Different Ratios of Si-Al of Zeolite HZSM-5 on the Activity of Bifunctional Catalysts Upon Dimethyl Ether Synthesis |
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| Authors: | Q Xu PhD P Lan K Huang Y Yan |
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| Affiliation: | 1. Research Center for Biomass Energy, East China University of Science and Technology , Shanghai, China;2. Research Center for Biomass Energy, East China University of Science and Technology , Shanghai, China;3. School of Chemistry and Ecoengineering, Guangxi University for Nationalities , Nanning, China |
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| Abstract: | Abstract 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. |
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| Keywords: | bifunctional catalyst dimethyl ether direct synthesis zeolite |
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