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Highly selective catalytic epoxidation of cyclohexene and cyclooctene with t-butyl hydroperoxide by molybdenum(VI) compounds heterogenized in silica produced by the sol–gel process

Paper ID Volume ID Publish Year Pages File Format Full-Text
42509 45928 2009 7 PDF Available
Title
Highly selective catalytic epoxidation of cyclohexene and cyclooctene with t-butyl hydroperoxide by molybdenum(VI) compounds heterogenized in silica produced by the sol–gel process
Abstract

Solid catalysts were obtained by the formation of silica matrixes in the presence of oxomolybdenum(VI) complexes via the acid catalyzed hydrolytic sol–gel method using tetraethyl orthosilicate (TEOS). The obtained solids were tested as catalysts for the oxidation of cyclooctene and cyclohexene with t-butyl hydroperoxide. All performed reactions were selective for production of the corresponding epoxide, with formation of small traces of 2-cyclohexen-1-ol and 2-cyclohexen-1-one (<2%). The best result was observed at 72–75 °C with a 91% yield of cyclohexen-oxide. No leaching of metal was observed and an increase on the catalytic activity was seen in recycle experiments.

Graphical abstractHeterogeneous catalysts were obtained by the formation of silica matrixes in the presence of oxomolybdenum(VI) complexes via the acid catalyzed hydrolytic sol–gel method using tetraethyl orthosilicate (TEOS). The obtained solids were tested as catalysts for the oxidation of cyclooctene and cyclohexene with t-butyl hydroperoxide. All performed reactions were efficient and selective for production of the corresponding epoxide.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Oxidation; Cyclohexene; Catalysis; Molybdenum; Tetraethyl orthosilicate; Sol–gel process
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Highly selective catalytic epoxidation of cyclohexene and cyclooctene with t-butyl hydroperoxide by molybdenum(VI) compounds heterogenized in silica produced by the sol–gel process
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 368, Issues 1–2, 31 October 2009, Pages 139–145
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us