SAPO-5分子筛固载铜双核金属配合物的结构及催化性能  

Structure and Catalytic Properties of Dinuclear Copper Complex Encapsulated in SAPO-5

作　　者：高丽娟[1] 焦帅斌[1] 葛春花[1] 田永华[1] 

机构地区：[1]宁夏大学化学化工学院,宁夏银川750021

出　　处：《石油化工高等学校学报》2009年第3期55-59,共5页Journal of Petrochemical Universities

基　　金：教育部科学技术研究重点资助项目(203143)

摘　　要：合成了一种铜双核大环金属配合物。采用浸渍法将双核配合物固载在分子筛SAPO-5中制得负载催化材料,其中磷酸铝分子筛SAPO-5采用三甲氧基氨丙基硅烷将表面官能化。BET,IR,UV-Vis,XRD,ICP-AES和TG/DTA表征结果表明配合物被固载后,其结构仍保持完整。以环己烷氧化为探征反应,考察了负载催化材料的催化性能。结果表明该负载催化剂具有较高的活性,当选用乙腈做溶剂时,环己烷的转化率高达55.1%。该负载催化剂在环己烷液相反应中的最佳反应条件为:反应时间在10～12h,反应温度在80～90℃。The dinuclear copper complexe was synthesized and characterized. The macrocyelic copper complexe was immobilized on SAPO-- 5 molecular sieve, functionalized SAPO-- 5 molecular sieve by γ-- aminopropyl. The sample was characterized by BET, IR and UV--vis spectroscopies, XRD, ICP--AES and TG/DTA techniques, and its structure still remained intact. The catalytic properties of the prepared catalyst were studied by the cyclohexane oxidation with H2O2 as an oxidant. The catalytic results show that the catalyst has the better activity and stability in cyclohexane oxidation. Amongst all the solvents ,cyclohexane conversion is the highest （55.1%） when acetonitrile was used as solvent. The influences of time and temperature on cyclohexane conversion are also further investigated. The considerable reactive condition should be reaction time （10-12 h）, reaction temperature （80-90 ℃） respectively.

关 键 词：双核配合物 SAPO-5 催化氧化反应 固载 

分 类 号：O643.3[理学—物理化学]