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钛酸酯催化碳酸二甲酯与苯酚的酯交换反应

Transesterification of Dimethyl Carbonate and Phenol with Titanate Catalysts

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【作者】 高俊杰姚洁梅花王公应

【Author】 GAO Junjie, YAO Jie, MEI Hua, WANG Gongying * (Chengdu Institute of Organic Chemistry, The Chinese Academy of Sciences, Chengdu 610041, China)

【机构】 中国科学院成都有机化学研究所!成都610041

【Abstract】 The transesterification of phenol and dimethyl carbonate (DMC) to diphenyl carbonate (DPC) was studied using tetrabutyl titanate and tetraphenyl titanate as catalysts. The main product was found to be methyl phenyl carbonate (MPC) which is an intermediate of the reaction. The selectivity for DPC was improved when increasing the phenol/DMC molar ratio or prolonging the reaction time. The phenol conversion, selectivity for MPC and DPC were 47 4%, 90 9% and 9 14%, respectively, when the transesterification reaction approached equilibrium under the conditions of 175 ℃, 25 h and DMC∶phenol∶ Ti(OBu) 4 molar ratio of 1 5∶1∶0 05. The selectivity for DPC could reach 12.2% when the reaction time was 30 h. The tetrabutyl titanate catalyst showed a higher catalytic activity than tetraphenyl titanate.

【基金】 沙隆达集团资助项目
  • 【文献出处】 催化学报 ,Chinese Journal of Catalysis , 编辑部邮箱 ,2001年04期
  • 【分类号】O621
  • 【被引频次】52
  • 【下载频次】456
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