Catalytic epoxidation of olefin over supramolecular compounds of molybdenum oxide clusters and a copper complex

doi:10.1016/S1872-2067(15)60919-6

Abstract

Abstract:

The catalytic epoxidation of olefin was investigated on two copper complex-modified molybdenum oxides with a 3D supramolecular structure, [Cu(bipy)]₄[Mo₁₅O₄₇]·2H₂O (1) and [Cu^I(bix)][(Cu^Ibix) (δ-Mo^VI₈O₂₆)_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.

Key words: Supramolecular compound, Molybdenum oxide cluster, Copper complex, Olefin, Epoxidation

Hongcheng Gao, Yan Yan, Xiaohong Xu, Jiehui Yu, Huiling Niu, Wenxiu Gao, Wenxiang Zhang, Mingjun Jia. Catalytic epoxidation of olefin over supramolecular compounds of molybdenum oxide clusters and a copper complex[J]. Chinese Journal of Catalysis, 2015, 36(11): 1811-1817.

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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(15)60919-6

https://www.cjcatal.com/EN/Y2015/V36/I11/1811

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