Cupric bromide-derived complex: An effective homogeneous catalyst for oxidative carbonylation of methanol to dimethyl carbonate

Aiming at developing a homogeneous catalyst with low corrosiveness, CuBr 2 was selected as active species for the oxidative carbonylation of methanol. A series of N-containing ligands were introduced to improve the catalytic performance of CuBr 2. The effects of reaction conditions including CO/O 2...

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Bibliographic Details
Published in:Journal of the Taiwan Institute of Chemical Engineers 2011-07, Vol.42 (4), p.616-621
Main Authors: Liu, Ding-Hua, He, Jian, Sun, Lin-Bing, Liu, Xiao-Qin, Zhong, Qin
Format: Article
Language:English
Subjects:
Complex
Cupric bromide
Dimethyl carbonate
Methanol
Oxidative carbonylation
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Summary:Aiming at developing a homogeneous catalyst with low corrosiveness, CuBr 2 was selected as active species for the oxidative carbonylation of methanol. A series of N-containing ligands were introduced to improve the catalytic performance of CuBr 2. The effects of reaction conditions including CO/O 2 molar ratio, catalyst concentration, temperature, pressure, and time were investigated. The results show that the introduction of ligand can improve the catalytic performance of CuBr 2 obviously. The catalyst (C 3H 7) 4NBr/CuBr 2 exhibits the best catalytic performance, and 58.1% of methanol can be converted with DMC selectivity of 93.5% under the optimal reaction conditions. The increase of catalytic performance of CuBr 2 can be ascribed to the increase of electron density around Cu after the formation of complex with ligand.
ISSN:1876-1070
1876-1089
DOI:10.1016/j.jtice.2010.10.005