聚吡咯修饰的ZSM-5型分子筛在乙炔氢氯化反应中的催化性能  

Polypyrrole-modified ZSM-5 type zeolite for acetylene hydrochlorination

作　　者：刘慧捷 朱明远[1] 代斌[1] 

机构地区：[1]石河子大学化学化工学院/新疆兵团化工绿色过程重点实验室-省部共建国家重点实验室培育基地,新疆石河子832003

出　　处：《功能材料》2017年第1期1115-1119,1124,共6页Journal of Functional Materials

基　　金：国家基础研究发展计划(973计划)资助项目(2012CB720302);国家自然科学基金资助项目(U1403294);教育部长江学者和创新团队发展计划资助项目(IRT_15R46)

摘　　要：合成了聚吡咯修饰的ZSM-5型分子筛(PPy-ZSM-5)材料,并通过傅里叶红外(FT-IR)、透射电镜(TEM)、比表面积测试法(BET)确认了材料的结构特征和表面形貌,证明聚吡咯被成功的修饰在ZSM-5上。将PPy-ZSM-5作为载体制备了1%AuCl_3/PPy-ZSM-5催化剂应用于乙炔氢氯化反应,通过筛选,表现最优的是催化材料1%AuCl3/8PPy-ZSM-1 000,在体积空速180h-1的条件下,乙炔的转化率达到99%。实验结果表明,PPy的存在提高了分子筛表面导电性,提高了载体对HCl的吸附能力从而抑制了反应过程中Au3+被还原成Au0、金颗粒的团聚以及催化剂的积碳,明显的提高了催化剂的催化表现。In this study, polypyrrole （PPy） was modified at ZSM-5 zeolite for synthesizing PPy-ZSM-5 materials. The materials were characterized using FT-IR, TEM, BET to determine structural and morphological characteristics of the sample. The results proved that PPy was successfully deposited onto the surface of ZSM-5 car- rier. PPy-ZSM-5 were by used as carriers to prepare 1%AuCl3/PPy-ZSM-5 catalysts for acetylene hydrochlorination. 1%AuC13/SPPy-ZSM-1 000 was optimal catalyst, the conversion rate of acetylene can reach 99%. The results shown that the existence of PPy significantly enhanced catalytic performance by affecting the adsorption of hydrogen chloride, and then inhibiting the conversion of Au3＋ to Au0 , the aggregation of gold particles and the coke deposition during acetylene hydrochlorination.

关 键 词：聚吡咯 ZSM-5 乙炔氢氯化 

分 类 号：O643.36[理学—物理化学] TQ426.65[理学—化学]