CAJ | 학술논문

乙炔二聚制备乙烯基乙炔是乙炔法生产氯丁橡胶过程中关键反应。本文以氯化亚铜为主催化剂，氯化锌为氯化亚铜的助催化剂，氯化铵为助溶剂，水为溶剂，并且添加一定量的盐酸提供酸性环境，形成锌（Ⅱ）-铜（Ⅰ）双金属催化剂作用于乙炔二聚反应，以解决在该反应中乙炔转化率低、目标产物乙烯基乙炔选择性差等问题；对影响该反应的可能因素，如氯化锌用量、氯化亚铜用量、反应温度以及乙炔空速等条件进行优化，实验结果表明：锌（Ⅱ）-铜（Ⅰ）双金属催化剂能有效的改善乙炔二聚反应，在最佳反应条件下乙烯基乙炔的选择性为91.1%，乙炔的转化率为11.3%。
을결이취제비을희기을결시을결법생산록정상효과정중관건반응。본문이록화아동위주최화제，록화자위록화아동적조최화제，록화안위조용제，수위용제，병차첨가일정량적염산제공산성배경，형성자（Ⅱ）-동（Ⅰ）쌍금속최화제작용우을결이취반응，이해결재해반응중을결전화솔저、목표산물을희기을결선택성차등문제；대영향해반응적가능인소，여록화자용량、록화아동용량、반응온도이급을결공속등조건진행우화，실험결과표명：자（Ⅱ）-동（Ⅰ）쌍금속최화제능유효적개선을결이취반응，재최가반응조건하을희기을결적선택성위91.1%，을결적전화솔위11.3%。
Acetylene dimerization reaction is the key-step in the acetylene-based processes for chloroprene rubber production.In this article,CuCl was used as the main catalyst,ZnCl2 as the assistant catalyst of CuCl,NH4Cl as the solubilizer,water as the solvent and a certain amount of hydrochloride acid to provide the acid environment,thereby forming Zn (II)-Cu (I) collaborative bimetallic catalysis for acetylene dimerization,which aim to solve the problem of the lower acetylene conversion and lower MVA selectivity in acetylene dimerization.After optimization of the experimental factors including the amount of zinc chloride, the mass percentage of copper chloride,the reaction temperature and the C2H2 space velocity,the experimental results show that the bimetallic catalysis can highly improve the acetylene dimerization reaction.Under the optimum conditions,MVA selectivity can reach to 91.1% and the acetylene conversion is 11.3%.