文献类型：期刊文献

英文题名：Trimetallic Au-Cu-La/AC for Acetylene Hydrochlorination in a Multi-Tubular Fixed Bed Reactor

作者：Wang Lei[1,2];Shen Benxian[1];Zhao Jigang[1,3];Wu Chunlei[2];Bi Xiaotao[3]

机构：[1]East China Univ Sci & Technol, Int Joint Res Ctr Green Energy Chem Engn, Shanghai 200237, Peoples R China;[2]Tianjin Dagu Chem Co Ltd, Tianjin 300455, Peoples R China;[3]Univ British Columbia, Chem & Biol Engn Dept, Vancouver, BC V6T 1Z3, Canada

年份：2020

卷号：39

期号：1

起止页码：201

外文期刊名：IRANIAN JOURNAL OF CHEMISTRY & CHEMICAL ENGINEERING-INTERNATIONAL ENGLISH EDITION

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000600017900017)】；

基金：The financial supported from China Scholarship Council (CSC) and Fundamental Research Funds for the Central Universities (NO. WA1817027)are gratefully acknowledged.

语种：英文

外文关键词：Mercury-free catalyst; Acetylene hydrochlorination; La; Gold; Multi-tubular fixed bed reactor

摘要：The metal chloride of LaCl3 was chosen to modify the Au-Cu/AC to decrease the noble metal of gold and enhance the catalytic performances. Then a mercury-free catalyst of Au-Cu-La/AC was prepared by the impregnation method, and the fresh Au-Cu-La/AC and Au-Cu/AC catalysts were also characterized in comparison. The catalytic performances of mercury-free catalysts for acetylene hydrochlorination were carried out for 3500 hours in a multi-tubular fixed bed reactor. The additives of La can make the active species dispersed well and retard the aggregation of particles. And the acetylene conversion rate remained stable over 98.5% with the fluctuations, less than 1%, and the selectivity of vinyl chloride maintained the stability of 99% or higher, which indicated that the mercury-free catalyst has excellent catalytic performances for acetylene hydrochlorination.