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Highly effective conversion of syngas to dimethyl ether over the hybrid catalysts containing high-silica HMCM-22 zeolites

Paper ID Volume ID Publish Year Pages File Format Full-Text
52963 46892 2009 5 PDF Available
Title
Highly effective conversion of syngas to dimethyl ether over the hybrid catalysts containing high-silica HMCM-22 zeolites
Abstract

Pure HMCM-22 zeolites with different SiO2/Al2O3 ratios were synthesized and characterized by XRD, N2 adsoption, 27Al MAS NMR, pyridine-FT-IR and NH3–TPD. The HMCM-22 samples were mechanically mixed with a methanol synthesis catalyst and then applied in the one-step synthesis of dimethyl ether from syngas (STD process). The results indicated that with the increase of SiO2/Al2O3 ratio of zeolites HMCM-22, selectivity to dimethyl ether increased and the selectivities of by-products decreased due to the weakening of their acidities. It is concluded that the high-silica HMCM-22 zeolite is an effective dehydration component of the hybrid catalyst for the STD process.

Keywords
MCM-22 zeolite; Synthesis; Acidity; Syngas; Dimethyl ether; Methanol dehydration
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Highly effective conversion of syngas to dimethyl ether over the hybrid catalysts containing high-silica HMCM-22 zeolites
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 10, Issue 5, 25 January 2009, Pages 620–624
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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