Journal
CHINESE JOURNAL OF CATALYSIS
Volume 36, Issue 11, Pages 1811-1817Publisher
SCIENCE PRESS
DOI: 10.1016/S1872-2067(15)60919-6
Keywords
Supramolecular compound; Molybdenum oxide cluster; Copper complex; Olefin; Epoxidation
Funding
- National Natural Science Foundation of China [21173100, 21320102001]
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The catalytic epoxidation of olefin was investigated on two copper complex-modified molybdenum oxides with a 3D supramolecular structure, [Cu(bipy)](4)[Mo15O47]center dot 2H(2)O (1) and [Cu-I(bix)][(Cu(I)bix) (delta-(Mo8O26)-O-VI)(0.5)] (2) (bipy = 4,4'-bipyridine, bix = 1,4-bis(imidazole-1-ylmethyl)benzene). Both compounds were catalytically active and stable for the epoxidation of cyclooctene, 1-octene, and styrene with tert-butyl hydroperoxide (t-BuOOH) as oxidant. The excellent catalytic performance was attributed to the presence of stable coordination bonds between the molybdenum oxide and copper complex, which resulted in the formation of easily accessible Mo species with high electropositivity. In addition, the copper complex also acted as an active site for the activation of t-BuOOH, thus improving these copper complex-modified polyoxometalates. (C) 2015, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
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