Catalytic study on the transesterification of dimethyl carbonate and phenol to diphenyl carbonate

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• 作者：Zhiping Du ; Yanhua Xiao ; Tong Chen ; Gongying Wang
• 关键词：Dimethyl carbonate ; Diphenyl carbonate ; Transesterification ; Acid– ; base complex catalyst ; Phenol
• 刊名：Catalysis Communications
• 出版年：2008
• 期刊代码：12_15667367
• 类别：ce
• 出版时间：February 2008
• 卷：9
• 期：2
• 页码：239-243
• 文件大小：211 K

摘要

Transesterification of dimethyl carbonate and phenol to diphenyl carbonate and catalysts were investigated. The results showed that the transesterification was the reaction of soft base binding to hard acid, and hard acid catalysts had higher transesterification selectivity than the soft and border acid catalysts. When the hard acid n-Bu₂SnO and bases constituted acid–base complex catalysts, it was found that Cu₂O, as a promoter, could enhance the activity of n-Bu₂SnO outstandingly. The conversion of dimethyl carbonate was up to 50.8%with 99.9%transesterification selectivity. A plausible mechanism was also suggested.