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Dehydration of butanediols over CeO2 catalysts with different particle sizes

Paper ID Volume ID Publish Year Pages File Format Full-Text
44169 46006 2006 8 PDF Available
Title
Dehydration of butanediols over CeO2 catalysts with different particle sizes
Abstract

Dehydration of butanediols into unsaturated alcohols was investigated over CeO2 with different particle sizes. The size was controlled by the calcination temperature. Catalytic performance in the dehydration of 1,3-butanediol is greatly affected by the particle size. The selectivity to unsaturated alcohols such as 3-buten-2-ol and trans-2-buten-1-ol increases with increasing the particle size, while decomposition of 1,3-butanediol into methanol and ethanol is catalyzed by CeO2 with small particles. In contrast, in the reaction of 1,4-butanediol, cyclization products such as tetrahydrofuran and γ-butyrolactone increases with decreasing the particle size, instead of the decomposition into methanol and ethanol. CeO2{1 1 1} facets became predominant on the large particles, whereas different surfaces such as {1 0 0} and {1 1 0} facets were exposed on the small CeO2 particles. In the dehydration of butanediols, CeO2 has structure-sensitive catalysis: CeO2{1 1 1} facets have active sites for the formation of unsaturated alcohols, and the other surfaces catalyze the side reactions such as decomposition of 1,3-butanediol and cyclization of 1,4-butanediol.

Keywords
Dehydration; Butanediol; Unsaturated alcohol; Ceria
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Dehydration of butanediols over CeO2 catalysts with different particle sizes
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 300, Issue 1, 20 January 2006, Pages 50–57
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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