The green synthesis of chloropropylene carbonate via the coupling reaction of carbon dioxide and epichlorohydrin had been achieved using halogen-free and single-component catalysts tetrabutylammonium salts of tritrans...The green synthesis of chloropropylene carbonate via the coupling reaction of carbon dioxide and epichlorohydrin had been achieved using halogen-free and single-component catalysts tetrabutylammonium salts of tritransition-metal-substituted A-α- tungstogermanate [（n-C4H9）4N]3H7GeW9M3（H2O）30O7 （M = Cu^Ⅱ, Ni^Ⅱ, Co^Ⅱ and Mn^Ⅱ） without any solvent. The catalytic activity was significantly depended on the transition metal introduced in polyoxometalates. [（n-C4H9）4N]3H7GeW9Mn3（H2O）3O37 exhibited the highest catalytic activity with 94.9% conversion for epichlorohydrin and 98% selectivity for chloropropylene carbonate in 3 h. Plausible mechanism was proposed based on the results.展开更多
基金financially supported by the Natural Science Foundation of China(Nos.20731002 and 10876002), the 111 Project(No.B07012)the Program of Cooperation of the Beijing Education Commission(No.20091739006)+1 种基金Specialized Research Fund for the Doctoral Program of Higher Education(No.200800070015)Postgraduate innovative Research Foundation of Beijing Institute of Technology(No.AA200804)
文摘The green synthesis of chloropropylene carbonate via the coupling reaction of carbon dioxide and epichlorohydrin had been achieved using halogen-free and single-component catalysts tetrabutylammonium salts of tritransition-metal-substituted A-α- tungstogermanate [（n-C4H9）4N]3H7GeW9M3（H2O）30O7 （M = Cu^Ⅱ, Ni^Ⅱ, Co^Ⅱ and Mn^Ⅱ） without any solvent. The catalytic activity was significantly depended on the transition metal introduced in polyoxometalates. [（n-C4H9）4N]3H7GeW9Mn3（H2O）3O37 exhibited the highest catalytic activity with 94.9% conversion for epichlorohydrin and 98% selectivity for chloropropylene carbonate in 3 h. Plausible mechanism was proposed based on the results.
