Palladium nanoclusters entrapped in polyurea:A recyclable and efficient catalyst for reduction of nitro-benzenes and hydrodechlorination of halogeno-benzenes  

作　　者：JI HongBing LONG QingPing HE YunBing YAO XingDong 

机构地区：[1]The Key Laboratory of Low-carbon Chemistry&Energy Conservation of Guangdong Province,School of Chemistry and Chemical Engineering,Sun Yat-sen University,Guangzhou 510275,China [2]College of Chemistry&Ecological Engineering,Guangxi University for Nationalities,Nanning 530006,China

出　　处：《Science China Chemistry》2010年第7期1520-1524,共5页中国科学(化学英文版)

基　　金：supported by the National Natural Science Foundation of China (20976203);the Fundamental Research Funds for the Central Universities

摘　　要：Polyurea-entrapped palladium nanoclusters have been prepared by interfacial polymerization in W/O emulsion and showed high thermal stability and chemical stability with the content of 0.12 mmol g-1 Pd.This catalyst exhibited dual catalytic activity for reduction of nitro compounds and hydrodehalogenation of aromatic chlorides in atmospheric hydrogen with 100% yield for reduction of nitro compounds and 】99% yield for hydrodehalogenation of aromatic chlorides.This immobilizing method was particularly effective and eliminated the need of special chelating groups.Polyurea-entrapped palladium nanoclusters have been prepared by interfacial polymerization in W/O emulsion and showed high thermal stability and chemical stability with the content of 0.12 mmol g-1 Pd.This catalyst exhibited dual catalytic activity for reduction of nitro compounds and hydrodehalogenation of aromatic chlorides in atmospheric hydrogen with 100% yield for reduction of nitro compounds and >99% yield for hydrodehalogenation of aromatic chlorides.This immobilizing method was particularly effective and eliminated the need of special chelating groups.

关 键 词：polyurea-entrapped palladium nanocluster interfacial polymerization REDUCTION HYDRODEHALOGENATION immobilization 

分 类 号：O643.36[理学—物理化学]