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Dehydrogenation of propane over MWW-type zeolites supported gallium oxide

Paper ID Volume ID Publish Year Pages File Format Full-Text
50081 46779 2012 5 PDF Available
Title
Dehydrogenation of propane over MWW-type zeolites supported gallium oxide
Abstract

Dehydrogenation of propane to propylene in the presence of CO2 over ITQ-2 and MCM-22 supported gallium oxide was investigated, and compared with that of HZSM-5 supported ones. ITQ-2 supported catalysts exhibit higher selectivity to propylene and better stability due to more open pore structures and lower amount of strong Brønsted acid sites. With the accumulation of ultrasonic treatment time for ITQ-2 supports, the activity reduced while the selectivity increased. Ga2O3/ITQ-2 with 2 h ultrasonic treatment has the best propylene yield of 15.1%.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► The delamination of MWW zeolites greatly reduced the acid sites on Ga/MWW. ► Ga/ITQ-2 had a larger proportion of Lewis acid sites than that of Ga/MCM-22. ► Ga/ITQ-2 had superior selectivity of propylene as compared with Ga/ZSM-5. ► The open structure of ITQ-2 supports slowed down the catalyst deactivation.

Keywords
Propane dehydrogenation; Supported Ga2O3; MWW zeolites; Selectivity; Acidity
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Dehydrogenation of propane over MWW-type zeolites supported gallium oxide
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 18, 10 February 2012, Pages 63–67
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
You save - $31
Price after discount Only $4.95
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Full-text PDF Download
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