The use of zinc glutarate (ZnGA) as a heterogeneous catalyst for the copolymerization of epichlorohydrin, an epoxide with an electron-withdrawing substituent, and CO2 is reported. This catalyst shows the highest selectivity (98%) for polycarbonate over the cyclic carbonate in epichlorohydrin/CO2 copolymerization under mild conditions. The (epichlorohydrin-co-CO2) polymer exhibits a high glass transition temperature (T-g), 44 degrees C, which is the maximum T-g value obtained for the (epichlorohydrin-co-CO2) polymer to date.