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Aqueous phenol oxidation catalysed by molybdenum and tungsten carbonyl complexes

Paper ID Volume ID Publish Year Pages File Format Full-Text
41766 45899 2011 6 PDF Available
Title
Aqueous phenol oxidation catalysed by molybdenum and tungsten carbonyl complexes
Abstract

The catalytic activities of the complexes, Cp′M(CO)3X (Cp′ = Cp (η5-C5H5), Cp* (η5-C5Me5); M = Mo, W; X = Cl, CH3) and Mo(CO)6 have been examined for the oxidation of phenol (37.6 g/L) using H2O2 as oxidant in aqueous solution. Among them, CpMo(CO)3Cl and CpMo(CO)3(CH3) showed the highest catalytic activity. Conversion of phenol at 55 °C is more than 80% after 24 h when water is used as solvent and the ratio of catalyst:phenol:H2O2 is 1:50:200. The main oxidation products observed in solution are oxalic acid and catechol, together with trace amount of p-benzoquinone and maleic acid. Under similar conditions, binary Mo(CO)6 catalyses phenol oxidation giving hydroquinone and p-benzoquinone as main products.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (12 K)Download as PowerPoint slideResearch highlights▶ Cp′M(CO)3X/H2O2 system has been used for the catalytic phenol oxidation in aqueous solution. ▶ The main oxidation products in solution are oxalic acid and catechol.

Keywords
Molybdenum; Tungsten; Phenol; Oxidation; Carbonyl; Wastewater
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Aqueous phenol oxidation catalysed by molybdenum and tungsten carbonyl complexes
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 393, Issues 1–2, 15 February 2011, Pages 269–274
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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Price after discount Only $4.95
100% Money Back Guarantee
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