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Benzaldehyde synthesis via styrene oxidation by O2 over TiO2 and TiO2/SiO2

Paper ID Volume ID Publish Year Pages File Format Full-Text
52872 46890 2007 5 PDF Available
Title
Benzaldehyde synthesis via styrene oxidation by O2 over TiO2 and TiO2/SiO2
Abstract

Styrene was oxidized by molecular oxygen over TiO2 and TiO2/SiO2 for the formation of benzaldehyde. In the absence of catalyst at 100 °C and 10 atm O2, polystyrene is the major product. Over the catalysts, the oxidation of styrene is enhanced with benzaldehyde and formaldehyde being the major whereas phenylacetaldehyde, acetophenone, styrene oxide, benzoic acid, and polymer being the minor products. The polymerization of styrene was initiated by the radicals formed in the oxidation reaction. The addition of radical inhibitor nitrobenzene and/or the employment of a catalyst of high specific surface area can promote the termination of the radicals, and hence improve the selectivity of benzaldehyde.

Keywords
Benzaldehyde; Styrene oxidation; TiO2; TiO2/SiO2 catalyst
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 8, Issue 3, March 2007, Pages 488–492
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
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