乙炔氢氯化过程中铜基催化剂的制备及催化性能

摘要

采用球形活性炭为载体,制备了用于乙炔氢氯化反应的载Cu催化剂, 并采用TEM进行了表征。在常压固定床反应器中考察了溶剂、酸洗液、Cu的负载量、焙烧温度对Cu/C催化剂性能的影响。结果表明, 以1 mol/L盐酸为溶剂,1 mol/L H₃PO₄为活性炭酸洗液,Cu的负载量为15%,焙烧温度为500℃时,该催化剂具有较高的分散度和反应活性。空速180 h^-1、V(HCl)/V(C₂H₂)=1.1、Cu的负载量为15%、温度180℃时,乙炔氢氯化反应的转化率可达68%以上, 氯乙烯选择性不低于99.5%,同时具有较好的稳定性; 在空速为540 h^-1时, 其催化活性会因活性组分的团聚结晶而降低。

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	张绪立
	王富民
	王录

关键词： CuCl₂；乙炔；氢氯化； Cu

Abstract：

The supported copper catalysts for acetylene hydrochlorination reaction were prepared and characterized by TEM analysis. Effects of solvent, pickling solution, Cu loading and calcination temperature on the catalytic performances of supported copper catalysts were studied in detail at an atmospheric fixed bed reactor. With 1 mol/L hydrochloric acid as solvent, 1 mol/L H₃PO₄ as pickling solution, Cu loading of 15% and calcination at 500℃, supported copper catalyst Cu/C was of high dispersity and high catalytic activity for acetylene hydrochlorination. Under the reaction conditions of total gas hourly space velocity (GHSV) of 180 h^-1, V(HCl)/V(C₂H₂)=1.1, Cu loading of 15%, reaction temperature of 180℃, the conversion of acetylene was up to 68%, the selectivity to vinyl chloride was more than 99.5% and a good stability was observed. Under the reaction conditions of 540 h^-1, catalytic activity will decrease due to the aggregation and crystallization of active components.

Keywords： CuCl₂； acetylene； hydrochlorination； Cu

Received 2014-04-18;

Fund:

国家973计划(2102CB720302)。

Corresponding Authors: 王富民,E-mail:wangfumin@tju.edu.cn。 Email: wangfumin@tju.edu.cn

About author: 张绪立(1988-),男,硕士研究生,现从事乙炔氢氯化方面的研究。

引用本文:

张绪立, 王富民, 王录.乙炔氢氯化过程中铜基催化剂的制备及催化性能[J]. 化学工业与工程, 2016,33(3): 19-24

Zhang Xuli, Wang Fumin, Wang Lu.Preparation and Catalytic Performance of Supported Copper Catalysts for Hydrochlorination of Acetylene[J]. Chemcial Industry and Engineering, 2016,33(3): 19-24

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