Journal
APPLIED CATALYSIS A-GENERAL
Volume 393, Issue 1-2, Pages 269-274Publisher
ELSEVIER
DOI: 10.1016/j.apcata.2010.12.003
Keywords
Molybdenum; Tungsten; Phenol; Oxidation; Carbonyl; Wastewater
Categories
Funding
- Ministry of Education (MOE) [R-143-000-373-112, R-143-000-361-112]
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The catalytic activities of the complexes, Cp'M(CO)(3)X (Cp'=Cp (eta(5)-C5H5), Cp* (eta(5)-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)(3)Cl and CpMo(CO)(3)(CH3) showed the highest catalytic activity. Conversion of phenol at 55 degrees 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. (C) 2010 Elsevier B.V. All rights reserved.
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