文献类型：期刊文献

英文题名：In Situ Reaction and Mass Spectrometry-Combined Technology for the Catalytic Performance of Cs/Al2O3 and Ba/Al2O3 in the Dehydrochlorination Reaction of 1,1,2-Trichloroethane

作者：Shen, Haitao[1];Pan, Quanwang[2];Ge, Xiang[1];Wang, Hui[4];Wu, Shiyong[3];Zhao, Jigang[1]

机构：[1]East China Univ Sci & Technol, Int Joint Res Ctr Green Energy Chem Engn, Shanghai 200237, Peoples R China;[2]Ningbo Union King New Mat Ltd, Ningbo 315800, Peoples R China;[3]East China Univ Sci & Technol, Sch Resources & Environm Engn, Dept Chem Engn Energy Resources, Shanghai 200237, Peoples R China;[4]Jiaxing Univ, Coll Biol Chem Sci & Engn, Jiaxing 314001, Peoples R China

年份：2024

卷号：63

期号：29

起止页码：12760

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20242916727132);WOS:【SCI-EXPANDED(收录号:WOS:001276107600001)】；

基金：This research was supported by the National Natural Science Foundation of China (Grant No. 21878096).

语种：英文

外文关键词：Adhesives - Alkalinity - Alumina - Aluminum oxide - Catalyst selectivity - Catalyst supports - Chlorine compounds

摘要：1,1,2-Trichloroethane (1,1,2-TCE) is a chemical raw material that could be used for cracking to produce 1,2-dichloroethylene (1,2-DCE) and 1,1-dichloroethylene (VDC). 1,1-Dichloroethylene had a wide range of industrial applications and was a raw material for various chemical products, such as refrigerant difluorochloroethane, lithium-ion battery adhesives, and high-barrier materials. There was a certain research foundation for catalysts for the catalytic cracking of 1,1,2-trichloroethane. The different acidities and alkalinities of catalysts corresponded to different product distributions. Overall, there had been extensive research on the distribution of three isomeric products, but there were few reports on the study of other residual products, which hindered further understanding of the reaction mechanism. Therefore, it was necessary to study the in situ reaction process, which could examine the real-time catalytic performance of the catalysts and reveal the mechanism of the residual reactions. Mass spectrometry was used to study the residual products such as chloroacetylene and vinyl chloride generated by the system. In this paper, the product changes of the 1,1,2-trichloroethane in situ catalytic cracking reaction during the heating process were investigated. The results indicated that alumina-supported cesium-based catalysts had stronger selectivity for chloroacetylene, up to 10.46%, while alumina-supported barium-based catalysts had stronger selectivity for vinyl chloride, up to 3.86%. Cesium-based catalysts would lower the energy barrier for reactions to occur, allowing dichloroethylene, chloroacetylene, and vinyl chloride to form at lower temperatures. The generation temperature of dichloroethylene, chloroacetylene, and vinyl chloride in barium-based catalysts was higher. The experimental results revealed the changes in functional groups and product distribution of different catalysts during the in situ heating process, providing a theoretical basis for further catalyst redesign and inhibition of residual reactions.