%0 Journal Article %T Cycloaddition Reaction of Carbon Dioxide to Epoxides Catalyzed by Polymer-Supported Quaternary Phosphonium Salts %A Yubing Xiong %A Feng Bai %A Zipeng Cui %A Na Guo %J Journal of Chemistry %D 2013 %I Hindawi Publishing Corporation %R 10.1155/2013/261378 %U http://dx.doi.org/10.1155/2013/261378