4Saleh R Yanni, Michaelson R Chaeles, Suciu E Nausicaa, et al. Process for Manufacturing Dialkyl Carbonates from Urea and Alcohol[P].WO 9 517 369,1995.
5Ryu J Yong.Process for Making Dialkyl Carbonates[P].USP 5 902 894,1999-05-11.
6Ryu J Yong,Gelbein,Abraham P.Process and Catalyst for Making Dialykl Carbonates[P].USP 6 392 078,2002-05-21.
7Cui Hongyou,Wang Tao,Wang Fujun,et al.One-pot synthesis of dimethyl carbonate using ethylene oxide,methanol,and carbon dioxide under supercritical conditions[J].Ind.Eng.Chem.Res.2003,42:3 865-3 870.
8Bhanage B M,Fujita S,Ikushima Y,et al.Synthesis of dimethyl carbonate and glycols from carbon dioxide,epoxides,and methanol using heterogeneous basic metal oxide catalysts with high activity and selectivity[J].Applied Catalysis A:General,2001,219:259-266.