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Synthesis and catalysis of tungsten oxide in hexagonal mesoporous silicas (W-HMS)

Paper ID Volume ID Publish Year Pages File Format Full-Text
44459 46030 2007 6 PDF Available
Title
Synthesis and catalysis of tungsten oxide in hexagonal mesoporous silicas (W-HMS)
Abstract

Hexagonal mesoporous silicas containing tungsten complexes have been synthesized through the condensation of tetraethoxysilane templated by an amphiphilic diblock copolymers modified with tungsten isocyanide complexes under acidic conditions. Upon calcination, the tungsten complex was transformed into its oxide, which was deposited inside the channels. This material is illustrated to be a good catalyst on the allylic oxidation of cyclohexene in the presence of hydrogen peroxide under mild conditions. In addition, this catalyst could be easily recovered after the reaction and re-used without any significant loss of its activity.

Graphical abstractBy using a diblock copolymer containing tungsten complexes as templates, tungsten-hexagonal mesoporous silicas (W-HMS) were synthesized, which could be used as a catalyst for the allylic oxidation of cyclohexene. Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Silicas; Tungsten; Oxidation; Cyclohexene
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Synthesis and catalysis of tungsten oxide in hexagonal mesoporous silicas (W-HMS)
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 317, Issue 1, 27 January 2007, Pages 91–96
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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