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Re(VII) oxide on mesoporous alumina of different types—Activity in the metathesis of olefins and their oxygen-containing derivatives

Paper ID Volume ID Publish Year Pages File Format Full-Text
44418 46025 2007 8 PDF Available
Title
Re(VII) oxide on mesoporous alumina of different types—Activity in the metathesis of olefins and their oxygen-containing derivatives
Abstract

Advanced heterogeneous catalysts for olefin metathesis were prepared by supporting Re(VII) oxide on (i) mesostructured γ-aluminas with lath-like and scaffold-like morphologies and (ii) organized mesoporous alumina with wormhole-like pore structure. The thermal spreading method was found to be very suitable technique for preparation of a highly active catalyst. In the case of dec-1-ene metathesis, Re(VII) oxide catalysts supported on mesoporous aluminas exhibited a high activity and selectivity independently of the type of catalyst support. For metathesis of olefin functional derivatives, namely p-allylanisole and diethyl diallylmalonate, the activity of Re(VII) catalysts with optimum amount of Re(VII) being 9.0 wt% (with Me4Sn as co-catalyst) was found to depend on the catalyst pore size. Catalyst prepared from mesoporous aluminas with pore sizes at least 4.0 nm exhibited much higher conversions of substrates compared with catalysts of 3.5 nm pores.

Graphical abstractHeterogeneous catalysts for metathesis of olefins and their oxygen-containing derivatives were prepared by supporting Re(VII) oxide on (i) mesostructured γ-aluminas with lath-like and scaffold-like morphologies and (ii) organized mesoporous alumina with wormhole-like pore structure.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Organized mesoporous alumina; Metathesis; Olefin functional derivatives; Rhenium oxide
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Re(VII) oxide on mesoporous alumina of different types—Activity in the metathesis of olefins and their oxygen-containing derivatives
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 320, 22 March 2007, Pages 56–63
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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