Gold Catalysts on TiO sub(2)-Modified Silica Gel for the Selective Cyclopentane Oxidation to Cyclopentanone

Amorphous silica gel was modified by titania via an impregnation-surface hydrolysis approach and used as the support for preparing gold catalysts through an direct anion exchange method. These supported gold catalysts were characterized by XRD and TEM, and applied for the catalytic cyclopentane oxid...

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Bibliographic Details
Published inAdvanced Materials Research Vol. 1094; pp. 76 - 81
Main Authors Xu, Li Xin, Sun, Chuan Feng, Li, Jie, Chen, Guang Yuan
Format Journal Article
LanguageEnglish
Published 01.03.2015
Subjects
Anion exchanging
Catalysis
Catalysts
Conversion
Gold
Oxidation
Silica gel
Titanium dioxide
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Summary:Amorphous silica gel was modified by titania via an impregnation-surface hydrolysis approach and used as the support for preparing gold catalysts through an direct anion exchange method. These supported gold catalysts were characterized by XRD and TEM, and applied for the catalytic cyclopentane oxidation to cyclopentanone using oxygen in the absence of any solvent and initiator. The catalyst with a loading of 0.1wt.% gold and 10wt.% TiO sub(2) exhibited 7.2% cyclopentane conversion and 77.4% selectivities (including cyclopentanone and cyclopentanol) under the reaction conditions of 145[degrees]C, 2.0 MPa and 3 h. All the gold catalysts studied are very active in selective cyclopentane oxidation, and their high activities can be attributed to well dispersion and nanometer effect of gold particles within the catalysts.
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ISBN:9783038354291
3038354295
ISSN:1022-6680
1662-8985
DOI:10.4028/www.scientific.net/AMR.1094.76