Bi-Cu/C催化剂在乙炔氢氯化反应中的催化性能  

CATALYTIC ACTIVITY OF Bi-Cu/C CATALYST FOR ACETYLENE HYDROCHLORINATION

作　　者：吕忠领 丁其维 秦玉才[1] 宋丽娟[1] 

机构地区：[1]辽宁石油化工大学,辽宁省石油化工催化科学与技术重点实验室,辽宁抚顺113001 [2]黄河三角洲京博化工研究院高分子材料研究所

出　　处：《石油炼制与化工》2016年第10期32-37,共6页Petroleum Processing and Petrochemicals

基　　金：国家自然基金资助项目(21076100);辽宁省科学技术计划项目(2013219006)

摘　　要：为了研发一种替代汞催化乙炔氢氯化的催化剂,采用等体积浸渍法制备了用于乙炔氢氯化反应的Bi-Cu/C催化剂,并用X射线衍射(XRD)、扫描电子显微镜(SEM)和BET等方法进行了表征。在反应温度170℃、乙炔体积空速30h^(-1)、原料配比V(HCl)/V(C_2H_2)=1.05的条件下,采用常压固定床反应器考察了催化剂的催化性能。结果表明:Bi-Cu/C催化剂活性组分在载体表面高度分散;反应20h时,最佳配比下BiCl_3-CuCl_2/C催化剂的活性仍可达70%以上,选择性高于99%;在此催化剂中加入PO_4^(3-)改性后,催化活性和稳定性有了明显提高,乙炔转化率最高时接近98%,达到氯化汞催化乙炔氢氯化的活性,虽然稳定性低于氯化汞催化剂,但为研发乙炔氢氯化非汞催化剂提供了实验基础。To develop a catalyst to substitute mercuric chloride for hydrochlorination of acetylene, a series of Bi-Cu/C catalysts was prepared by equivalent-volume impregnation and characterized by XRD, SEM and BET. Under the reaction conditions of 170 ℃, C2H2 gas hourly space velocity of 30 h-1, feed volume ratio V（HCl）/V（C2H2）=1.05, the catalytic performance of Bi-Cu/C catalysts was investigated in a fixed bed reactor at atmospheric pressure. The results show that the active components of Bi-Cu /C catalyst is highly dispersed on the surface of the carrier; after 20 h reaction, the activity of the best BiCl3-CuCl2/C catalyst is above 70%, the selectivity is higher than 99%. After PO43- modification, the activity and stability is significantly improved, the acetylene conversion rate is close to 98%, which achieves the activity of mercuric chloride for hydrochlorination of acetylene. Although the stability is not as good as mercuric chloride catalyst, it provides an experimental basis for further research and development of non-mercury catalyst for acetylene hydrochlorination.

关 键 词：Bi-Cu /C催化剂 乙炔 氢氯化反应 氯乙烯 

分 类 号：TQ426[化学工程]