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Title: Aqueous phenol oxidation catalysed by molybdenum and tungsten carbonyl complexes
Authors: Wang, Z.
Kee, C.W.
Li, S.
Hor, T.S.A. 
Zhao, J. 
Keywords: Carbonyl
Issue Date: 15-Feb-2011
Citation: Wang, Z., Kee, C.W., Li, S., Hor, T.S.A., Zhao, J. (2011-02-15). Aqueous phenol oxidation catalysed by molybdenum and tungsten carbonyl complexes. Applied Catalysis A: General 393 (1-2) : 269-274. ScholarBank@NUS Repository.
Abstract: The catalytic activities of the complexes, Cp′M(CO)3X (Cp′ = Cp (η5-C5H5), Cp* (η5-C5Me5); M = Mo, W; X = Cl, CH 3) 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(CH 3) 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. © 2010 Elsevier B.V. All rights reserved.
Source Title: Applied Catalysis A: General
ISSN: 0926860X
DOI: 10.1016/j.apcata.2010.12.003
Appears in Collections:Staff Publications

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