Tuning the cross-linked structure of basic poly(ionic liquid)to develop an efficient catalyst for the conversion of vinyl carbonate to dimethyl carbonate  

作　　者：Zhaoyang Qi Shiquan Zhong Huiyun Su Changshen Ye Limei Ren Ting Qiu Jie Chen 

机构地区：[1]College of Chemical Engineering,Fuzhou University,Fuzhou 350108,China [2]Department of Chemical Engineering,Shijiazhuang University,Shijiazhuang 050035,China [3]Qingyuan Innovation Laboratory,Quanzhou 362801,China [4]Fuzhou University International Joint Laboratory of Thermochemical Conversion of Biomass,Fuzhou University,Fuzhou 350108,China

出　　处：《Chinese Journal of Chemical Engineering》2024年第8期106-116,共11页中国化学工程学报（英文版）

基　　金：supported by the National Key Research and Development Program of China(2022YFB4101800);National Natural Science Foundation of China(22278077,22108040);Key Program of Qingyuan Innovation Laboratory(00221004);Research Program of Qingyuan Innovation Laboratory(00523006);Natural Science Foundation of Fujian Province(2022J02019)。

摘　　要：Dimethyl carbonate(DMC)is a crucial chemical raw material widely used in organic synthesis,lithiumion battery electrolytes,and various other fields.The current primary industrial process employs a conventional sodium methoxide basic catalyst to produce DMC through the transesterification reaction between vinyl carbonate and methanol.However,the utilization of this catalyst presents several challenges during the process,including equipment corrosion,the generation of solid waste,susceptibility to deactivation,and complexities in separation and recovery.To address these limitations,a series of alkaline poly(ionic liquid)s,i.e.[DVBPIL][PHO],[DVCPIL][PHO],and[TBVPIL][PHO],with different crosslinking degrees and structures,were synthesized through the construction of cross-linked polymeric monomers and functionalization.These poly(ionic liquid)s exhibit cross-linked structures and controllable cationic and anionic characteristics.Research was conducted to investigate the effect of the cross-linking degree and structure on the catalytic performance of transesterification in synthesizing DMC.It was discovered that the appropriate cross-linking degree and structure of the[DVCPIL][PHO]catalyst resulted in a DMC yield of up to 80.6%.Furthermore,this catalyst material exhibited good stability,maintaining its catalytic activity after repeated use five times without significant changes.The results of this study demonstrate the potential for using alkaline poly(ionic liquid)s as a highly efficient and sustainable alternative to traditional catalysts for the transesterification synthesis of DMC.

关 键 词：Poly(ionic liquid) Cross-linking degree Dimethyl carbonate production Transesterification reaction Mechanism 

分 类 号：TM912[电气工程—电力电子与电力传动] TQ225.52[化学工程—有机化工]