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

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外文摘要：Dimethyl carbonate(DMC)is a crucial chemical raw material widely used in organic synthesis,lithium-ion 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 chal-lenges 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 cross-linking 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 control-lable 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 sus-tainable alternative to traditional catalysts for the transesterification synthesis of DMC.

外文关键词：

Poly(ionic liquid)Cross-linking degreeDimethyl carbonate productionTransesterification reactionMechanism

作者：

Zhaoyang Qi、Shiquan Zhong、Huiyun Su、Changshen Ye、Limei Ren、Ting Qiu、Jie Chen

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作者单位：

College of Chemical Engineering,Fuzhou University,Fuzhou 350108,China

Qingyuan Innovation Laboratory,Quanzhou 362801,China

Department of Chemical Engineering,Shijiazhuang University,Shijiazhuang 050035,China

Fuzhou University International Joint Laboratory of Thermochemical Conversion of Biomass,Fuzhou University,Fuzhou 350108,China

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基金：

National Key Research and Development Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaKey Program of Qingyuan Innovation LaboratoryResearch Program of Qingyuan Innovation LaboratoryNatural Science Foundation of Fujian Province

项目编号：

2022YFB4101800222780772210804000221004005230062022J02019

出版年：

2024

DOI：

10.1016/j.cjche.2024.05.007

中国化学工程学报(英文版)

中国化工学会

中国化学工程学报(英文版)

CSTPCDEI

影响因子：0.818

ISSN：1004-9541

年,卷(期)：2024.72(8)