超支化聚酰胺负载铂纳米簇杂化膜催化苯加氢反应.pdfVIP

Vol. 24 No.3 274 Journal of Functional Polymers 2011 9 1 1 1 1, 2 1 秦 君 , 张爱清, 李 琳 , 刘汉范 , 翟 豪 ( 1. 中南民族大学催化材料科学国家民委-教育部重点 验室, 武汉430074; 2. 中国科学院化学研究所, 北京 100190) : 制备了一系列不同结构的超支化聚酰胺及其负载铂纳米簇杂化膜催化剂, 研究了该催 化剂对苯液相加氢反应的催化性能利用透射电子显微镜傅里叶变换红外光谱仪X- 射线衍射 和X- 射线光电子能谱等对铂纳米簇以及负载催化剂的结构进行了表征结果表明:铂纳米颗粒分 散均匀, 粒径为3~ 5 nm;催化剂中的Pt 与超支化聚酰胺上的N 和 O 之间存在 一定程度的配位 对比没有负载的纯铂催化剂,用超支化聚酰胺负载铂纳米簇杂化膜催化剂催化苯液相加氢反应, 苯 的转化率提高了约13 倍, 且产物中出现了部分加氢产物环己烯, 表现出良好的催化活性和 一定的 环己烯选择性 : 超支化聚酰胺; 铂纳米簇; 苯加氢; 负载催化剂 : O631 : A : 1008-9357(2011) 03-0274-06 Catalytic Activity for Hydrogenation of Benzene Catalyzed by Pt Nano-Cluster/ Hyperbranched Polyamide 1 1 1 1, 2 1 QIN Jun , ZHANG A-i qing , LI Lin , LIU Han-fan , ZHAI Hao ( 1.Key Laboratory of atalysis and Materials Science of the State Ethnic Affairs ommission and Ministry of Education, South- entral University for Nationalities, Wuhan 430074, hina; 2. Institute of hemistry, hinese Academy of Sciences, Beijing 100190, hina) Abstract: atalytic behaviors of platinum nanoclusters supported on hyperbranched polyamide for the hydrogenation of benzene were studied. A series of hyperbranched polyamides with different structures were synthesized by direct condensation polymerization, and the corresponding Pt nano-cluster/ hyper- branched polyamide (Pt-HBPA) catalysts were prepared. The structures of catalysts were characterized by T EM, FT-IR, XRD and XPS. Results showed that the averag