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Carbon dioxide in the dehydrogenation of isobutane over VMgOx

Paper ID Volume ID Publish Year Pages File Format Full-Text
51137 46831 2009 5 PDF Available
Title
Carbon dioxide in the dehydrogenation of isobutane over VMgOx
Abstract

On the basis of catalytic tests and kinetic investigations, the role of carbon dioxide in the conversion of isobutane to isobutene over VMgOx catalyst was studied. It was shown that both the high temperature (>826 K) and the presence of VMgOx catalyst are required for activation of CO2 molecule. Presented results stay in agreement with thermodynamic analysis of the isobutane dehydrogenation process, where the two-step dehydrogenation pathway (i.e., simple dehydrogenation followed by reverse water gas shift reaction) was the most favorable way of isobutene synthesis. Moreover, insufficient oxidizing property of carbon dioxide allows to exclude possibility of the redox-cycle mechanism over VMgOx catalyst.

Keywords
Dehydrogenation; Isobutane; Carbon dioxide; Vanadium–magnesium oxide catalyst
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 11, Issue 2, 30 October 2009, Pages 132–136
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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