V-Cu氧化物催化碳酸二甲酯与苯酚酯交换反应  

V-Cu oxide for transesterification of dimethyl carbonate with phenol

作　　者：童东绅[1] 陈彤[1] 胡徐腾[2] 姚洁[1] 王越[1] 王公应[1] 

机构地区：[1]中国科学院成都有机化学研究所 [2]中国石油天然气股份有限公司石油化工研究院,北京100083

出　　处：《化工学报》2007年第7期1746-1750,共5页CIESC Journal

基　　金：国家高技术研究发展计划项目(2003AA321010)~~

摘　　要：A series of catalysts were studied for the synthesis of diphenyl carbonate(DPC)by transesterification of dimethyl carbonate(DMC)with phenol.It was found that V-Cu oxide was the best catalyst among the tested catalysts.The effects of V-Cu amount,molar ratio of copper to vanadium,molar ratio of dimethyl carbonate to phenol and reaction time were investigated.Under the conditions of catalyst amount 3.1%(mass ratio to phenol),molar ratio of Cu/V of 1∶4,molar ratio of DMC/phenol of 1.5∶1 and a reaction time 9 h,the maximum conversion of phenol and total yields of methyl phenyl carbonate(MPC)and DPC were 41.9% and 40.3%,respectively.Reuse of the catalyst revealed that V-Cu oxide was a relatively stable catalyst.The activity of the catalyst after being reused four times reduced from 41.9% to 29.1%.Moreover,the deactivated catalyst was easily regenerated by calcination in air,and the catalytic activity of the regenerated catalyst was almost as high as that of the fresh sample,the phenol conversion was 39.8%.A series of catalysts were studied for the synthesis of diphenyl carbonate （DPC） by transesterification of dimethyl carbonate （DMC） with phenol. It was found that V-Cu oxide was the best catalyst among the tested catalysts. The effects of V-Cu amount, molar ratio of copper to vanadium, molar ratio of dimethyl carbonate to phenol and reaction time were investigated. Under the conditions of catalyst amount 3.1% （mass ratio to phenol）, molar ratio of Cu/V of 1 ： 4, molar ratio of DMC/phenol of 1.5 ： 1 and a reaction time 9 h, the maximum conversion of phenol and total yields of methyl phenyl carbonate （MPC） and DPC were 41.9% and 40. 3%, respectively. Reuse of the catalyst revealed that V-Cu oxide was a relatively stable catalyst. The activity of the catalyst after being reused four times reduced from 41. 9% to 29. 1%. Moreover, the deactivated catalyst was easily regenerated by calcination in air, and the catalytic activity of the regenerated catalyst was almost as high as that of the fresh sample, the phenol conversion was 39. 8%.

关 键 词：碳酸二甲酯 苯酚 酯交换 碳酸二苯酯 复合氧化物 

分 类 号：TQ426.82[化学工程]