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Catalytic dehydration of 1,2-propanediol into propanal

Paper ID Volume ID Publish Year Pages File Format Full-Text
42668 45936 2009 5 PDF Available
Title
Catalytic dehydration of 1,2-propanediol into propanal
Abstract

Vapor-phase catalytic dehydration of 1,2-propanediol was investigated over several catalysts, such as acidic oxides and supported heteropoly acids. These acids catalyze the dehydration of 1,2-propanediol to produce propanal. In particular, silica-supported silicotungstic acid showed the highest catalytic activity in the formation of propanal. At low conversions, however, propanal reacted with another 1,2-propanediol to produce a cyclic acetal (2-ethyl-4-methyl-1,3-dioxolane). Such acetal formation reduced the selectivity to propanal. Under optimum reaction conditions, 100% conversion was attained with propanal selectivity higher than 93 mol% at 200 °C.

Graphical abstractVapor-phase catalytic dehydration of 1,2-propanediol was investigated over several catalysts, such as acidic oxides and supported heteropoly acids. These acids catalyze the dehydration of 1,2-propanediol to produce propanal. In particular, silica-supported silicotungstic acid showed the highest catalytic activity in the formation of propanal. Under optimum reaction conditions, 100% conversion was attained with propanal selectivity higher than 93 mol% at 200 °C.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Dehydration; 1,2-Propanediol; Propanal; Heteropoly acid; Silicotungstic acid
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Catalytic dehydration of 1,2-propanediol into propanal
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 366, Issue 2, 25 September 2009, Pages 304–308
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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Price after discount Only $4.95
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