催化剂制备方法对高浓度乙炔加氢制乙烯反应的影响  

Study on the effect of catalyst preparation method on ethylene production from high concentration acetylene hydrogenation

作　　者：程博贞 周淑珍 徐祝 朱明远[1,2] CHENG Bozhen;ZHOU Shuzhen;XU Zhu;ZHU Mingyuan(School of Chemistry and Chemical Engineering,ShiheziUniversity,Shihezi,Xinjiang 832003,China;Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan,Shihezi,Xinjiang 832003,China)

机构地区：[1]石河子大学化学化工学院,新疆石河子832003 [2]新疆兵团化工绿色过程重点实验室,新疆石河子832003

出　　处：《石河子大学学报（自然科学版）》2020年第1期1-6,共6页Journal of Shihezi University(Natural Science)

基　　金：国家自然科学基金项目(21666033)

摘　　要：为了缓解我国对石油进口的依赖,本文研究采用非石油路线生产乙烯,以煤化工下游产品电石乙炔为原料,对高浓度乙炔选择性加氢制乙烯,并以加氢反应中常用的金属Pd为活性组分,以大比表面积、表面弱酸位点丰富的MCM-41为载体,以NaBH4、乙二醇(EG)、H2为还原剂制备出不同Pd颗粒分散状态的系列Pd催化剂。活性测试及表征结果表明:与其他制备方法相比,EG还原法制备的催化剂中金属Pd颗粒分散良好且粒径均匀,并且对应的催化活性相对较好。This study used a non-oil route to produce ethylene,designed to alleviate China′s dependence on oil imports.The calcium carbide acetylene downstream of the coal chemical industry was used as a raw material to selectively hydrogenate high-concentration acetylene to ethylene.The metal Pd commonly used in hydrogenation process was used as the active component,MCM-41 with large specific surface area and abundant weak acid sites was used as support,and NaBH4,ethylene glycol(EG)and H2were used as reducing agents to prepare a series of Pd catalysts with different Pd particle dispersion states.The activity test and characterization results show that compared with other preparation methods,the metal Pd particles in the catalyst prepared by EG reduction method have good dispersion and uniform particle size,and the corresponding catalytic activity is relatively good.

关 键 词：高浓度乙炔 乙炔加氢 PD催化剂 催化剂制备方法 

分 类 号：TQ536.9[化学工程—煤化学工程]