文献类型：期刊文献

英文题名：Surface species structure of deactivated catalyst for dehydrochlorination of trichloroethane

作者：Ge, Xiang[1,2];Shen, Haitao[1];Zhao, Jigang[1];Wu, Shiyong[1,2]

机构：[1]East China Univ Sci & Technol, Int Joint Res Ctr Green Energy Chem Engn, Shanghai, Peoples R China;[2]East China Univ Sci & Technol, Sch Resources & Environm Engn, Dept Chem Engn Energy Resources, Shanghai, Peoples R China

年份：2023

卷号：45

期号：3

起止页码：6788

外文期刊名：ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS

收录：;EI(收录号：20232514268272);WOS:【SCI-EXPANDED(收录号:WOS:000995892600001)】；

基金：The work was supported by the~National Key Research and Development Program of China [2017YFB0306601].

语种：英文

外文关键词：1; 2-trichloroethane; dehydrochlorination; vinylidene chloride; catalyst deactivation; molecular structure

摘要：Catalytic splitting method was expected to replace saponification method in industry to produce vinylidene chloride from trichloroethane, but catalyst deactivation had become the main factor hindering its industrial application. There were many speculations based on theory about the reasons for catalyst deactivation, but there was barely any analysis of the surface substance composition of deactivated catalysts. A systematic and scientific study of the composition of deactivating substances on the surface of deactivated catalysts would contribute to further research on the causes of deactivation. Several characterizations and computing methods were combined to analyze the structure of the deactivation species on the catalyst surface. The total number of rings calculated for the extracted species was approximately 11. The number of cycloalkanes and aromatic rings was 5 and 7, respectively, and the carbon fraction of cycloalkanes was 0.38. The ratio of unsubstituted hydrogen to carbon atoms was 0.42. The results show that the molecular formula of the deactivation species on the catalyst surface was C37.72H31.51Cl15.85, which was a multi-cyclic mixed component mainly composed of aromatic hydrocarbons and aliphatic hydrocarbons.