A Novel Inorganic-Organic Composite Constructed from Cobalt（Ⅱ）-Monosubstituted Polyoxometalates and Poly（amidoamine）-NH2 Dendrimers  

作　　者：张晓凤 林深 骆耿耿 刘春莲 

机构地区：[1]College of Chemistry and Material, Fujian Normal University, Fujian, Fuzhou 350007, China

出　　处：《Chinese Journal of Chemistry》2007年第3期323-328,共6页中国化学（英文版）

基　　金：Project supported by the Natural Science Foundation of Fujian Province （No. E0510012） and a key item of Education Department of Fujian Province （No. JA04167）.Acknowledgements The authors thank professor Luo Yunjun and Li Guoping, School of Chemical Engineering and Materials Science, Beijing Institute of Technology for the support of PAMAM dendrimer compound.

摘　　要：An inorganic-organic composite was prepared by poly（amidoamine） （PAMAM） dendrimer reacting with cobalt（Ⅱ）-monosubstituted polyoxometalates Na5Co^Ⅱ（H2O）PW11O39 （PW11CO） in an aqueous solution. The hybrid composite PW11Co/PAMAM was characterized by FT-IR, UV-Vis diffuse reflectance spectra （DR-UV-Vis）, XPS, XRD and TG/DTA, indicating that the PWI iCo was chemically anchored to PAMAM. The morphologies of the title composite were characterized by scanning electron microscopy （SEM） and transmission electron microscopy （TEM）. The catalytic activity was evaluated by oxidation of isobutyraldehyde （IBA） to isobutyric acid （IBAc） in MeCN under mild conditions （20 ℃, ambient pressure）, showing that the title compound is a more effective and recoverable catalyst than corresponding PW11Co.

关 键 词：poly（amidoamine）dendrimer inorganic-organic composite POLYOXOMETALATE catalysis 

分 类 号：TB324[一般工业技术—材料科学与工程]