PVP-PdCl_2-CrCl_3/GLM-PEG400催化芳香卤化物的脱卤研究  

Study on Dehalogenation of Aromatic Halides Catalyzed by PVP-PdCl_2-CrCl_3/GLM-PEG400

作　　者：孟庆朝[1] 董玉环[1] 周长山[1] 

机构地区：[1]唐山师范学院化学系,河北唐山063000

出　　处：《化学世界》2008年第2期75-78,共4页Chemical World

基　　金：唐山市生物与化学重点实验室资助项目(0A360701B-8)

摘　　要：用聚乙烯吡咯烷酮(PVP)配合双金属Pd2+、Cr3+后,再负载于平均相对分子质量为400的聚乙二醇(PEG-400)与高岭土(GLM)组成的载体上,制成双金属双负载催化剂PVP-PdCl2-CrCl3/GLM-PEG400,以甲酸钠为氢转移试剂,催化难溶于水的芳香卤化物水相脱卤,转化率可达97.36%,且催化剂易于分离,在重复使用5次后转化率仍在60%以上。Bimetal on bisupport catalyst PVP-PdCl2-CrCl3/GLM-PEG400 was prepared through anchoring Pd^2＋ and Cr^3＋ on PVP（polyvinylpyrrolidone） and then supporting them on GLM functionalized by PEG400（polyethylene glycol with average relative molecular mass of 400）.The catalyst was used for dehalogenation of insoluble aromatic halides in aqueous system with sodium formate as hydrogen donors,and showed high dechlorination activity and selectivity.The conversion of aromatic chlorides reached 97.36%.The catalyst was easy to prepare and showed good reusability. When reused for five times the conversion of aromatic chlorides still maintained over 60%.

关 键 词：芳香卤化物 水相脱卤 双金属双负载催化剂 

分 类 号：O643.32[理学—物理化学]