Catalytic oxidation of p-xylene in water by cobalt(III) cubane cluster

被引：26

作者：

Chakrabarty, Rajesh ^{[1
]}

Kalita, Dipika ^{[1
]}

Das, Birinchi K. ^{[1
]}

机构：

[1] Gauhati Univ, Dept Chem, Gauhati 781014, India

来源：

POLYHEDRON | 2007年 / 26卷 / 06期

关键词：

Co(III) cubane cluster; cobalt(III) catalyst; p-xylene oxidation; p-toluic acid; homogeneous catalysis; catalytic oxidation; TEREPHTHALIC ACID; COBALTIC ACETATES; COMPLEXES; HYDROCARBONS; AUTOXIDATION;

D O I：

10.1016/j.poly.2006.10.014

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A tetrameric cubane complex CO4111(mu(3)-O)(4)(mu-O2CCH3)(4)(4-CNpy)(4) (I) has been prepared in good yield by H2O2 oxidation of Co-11 in presence of CH3CO22- and 4-cyanopyridine (4-CNpy) in methanol. The complex has been characterized by various physicochernical techniques including elemental analysis, UV-Vis, infrared and H-1 NMR spectroscopy and cyclic voltammetry. Oxidation of p-xylene under mild pressure with dioxygen in aqueous media has been studied using the tetrameric cubane complex I as the catalyst. The main oxidation product in the catalytic reaction is p-toluic acid is, with terephthalic acid forming in traces. The reaction rate and product yield (maximum p-toluic acid yield similar to 36% at 20 bar oxygen pressure at 130 degrees C are linearly dependent upon the applied pressure and reaction temperature. (C) 2006 Elsevier Ltd. All rights reserved.

引用

页码：1239 / 1244

页数：6

共 22 条

[1] Cobalt(III) complexes containing incomplete C3O4 or complete Co4O4 cubane core [J].