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Dehydrogenation of ethylbenzene to styrene over LaVOx/SBA-15 catalysts in the presence of carbon dioxide

Paper ID Volume ID Publish Year Pages File Format Full-Text
43811 45989 2008 7 PDF Available
Title
Dehydrogenation of ethylbenzene to styrene over LaVOx/SBA-15 catalysts in the presence of carbon dioxide
Abstract

The catalytic performance of a series of LaVOx/SBA-15 catalysts with different vanadium loadings was investigated for the dehydrogenation of ethylbenzene to styrene using CO2 as oxidant. The addition of La3+ has an effect of hindering carbon deposition and enhancing the stability of the catalysts. The 10%La2O3–15%V2O5/SBA-15 (wt%) catalyst exhibited the best activity and stability, giving a styrene yield of 74%. According to the results of characterization, the good performance of the catalyst could be related to the mono-dispersion of the VO43− species and the synergistic action of lanthanum and vanadium.

Graphical abstractThe catalytic performance of a series of LaVOx/SBA-15 catalysts with different vanadium loadings was investigated for the dehydrogenation of ethylbenzene to styrene using CO2 as oxidant. The addition of La3+ has an effect of hindering carbon deposition and enhancing the stability of the catalysts. The 10%La2O3–15%V2O5/SBA-15 (wt%) catalyst exhibited the best activity and stability, giving a styrene yield of 74%. According to the results of characterization, the good performance of the catalyst could be related to the mono-dispersion of the VO43− species and the synergistic action of lanthanum and vanadium.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Dehydrogenation of ethylbenzene; CO2 as oxidant; SBA-15; Carbon deposition; Vanadium oxide; Lanthanum promoters
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Dehydrogenation of ethylbenzene to styrene over LaVOx/SBA-15 catalysts in the presence of carbon dioxide
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 335, Issue 1, 1 February 2008, Pages 88–94
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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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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