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Titanium (IV) oxide, an efficient and structure-sensitive heterogeneous catalyst for the preparation of azoxybenzenes in the presence of hydrogen peroxide

Paper ID Volume ID Publish Year Pages File Format Full-Text
43078 45954 2009 7 PDF Available
Title
Titanium (IV) oxide, an efficient and structure-sensitive heterogeneous catalyst for the preparation of azoxybenzenes in the presence of hydrogen peroxide
Abstract

The titanium (IV) oxide is used as the catalyst in the heterogeneous liquid phase reaction for the oxidation of aniline and substituted anilines using dilute hydrogen peroxide as an oxidizing agent with different solvent conditions. Titanium (IV) oxide samples have been prepared under different experimental conditions by the sol–gel method. Experimental data showed that anatase form was an efficient catalyst for the title reaction and exhibited excellent selectivity (100%) and good yield (>90%) for the oxidation of aniline and substituted anilines, whereas the rutile form was found to be totally inactive. A high percentage of selectivity and good yields were achieved under mild reaction conditions. The recovered catalyst was used several times for the oxidation reaction with virtually no loss of activity. Overall a good catalytic activity and structure relationship was observed.

Graphical abstractTitanium (IV) oxide in anatase form showed a very good catalytic activity and selectivity for the preparation of azoxybenzenes from arylamines. Catalytic activity can be regenerated with virtually no loss of its activity. Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Selective oxidation; Anilines; Azoxybenzenes; Anatase; Rutile; Hydrogen peroxide; Titanium (IV) peroxo species
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Titanium (IV) oxide, an efficient and structure-sensitive heterogeneous catalyst for the preparation of azoxybenzenes in the presence of hydrogen peroxide
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 353, Issue 1, 31 January 2009, Pages 54–60
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
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Full-text PDF Download
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