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Liquid-phase oxidation of p-xylene using N-hydroxyimides

Paper ID Volume ID Publish Year Pages File Format Full-Text
51354 46840 2010 4 PDF Available
Title
Liquid-phase oxidation of p-xylene using N-hydroxyimides
Abstract

In this communication, we describe p-xylene oxidation with molecular oxygen at 373 K and atmospheric pressure using N-hydroxyimide catalysts. p-Xylene conversion was rather high over the first 2 h of reaction and complete by the end of the experiment. The product distribution curves versus reaction time are typical of consecutive reactions. The main intermediate product is p-toluic acid. Peak concentration and the shape of its concentration profile depend heavily on the N-hydroxyimide catalyst used. This effect seems to be related to the NO–H bond dissociation energy (BDE) of the N-hydroxyimides employed.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch Highlights► p-Xylene oxidation under mild reaction conditions leads to a high yield of terephthalic acid. ► The key parameter controlling the reactivity of N-hydroxyimides is the bond dissociation energy (BDE) of NO–H. ► A combination of cobalt and manganese salts and N-hydroxysuccinimide is the best catalytic system in the p-xylene oxidation to terephthalic acid.

Keywords
p-Xylene; Terephthalic acid; Oxidation; Homogeneous catalysis; Organocatalysis
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Liquid-phase oxidation of p-xylene using N-hydroxyimides
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 12, Issue 1, 25 October 2010, Pages 5–8
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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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