화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.18, No.5, 1730-1735, September, 2012
DOI10.1016/j.jiec.2012.03.017  Export Citation
Urea methanolysis to dimethyl carbonate over ZnO-CeO2-MO (MO: La2O3, Y2O3, Co2O3, Ga2O3, and ZrO2) catalysts
Wangrae Joe, Hye Jin Lee, Ung Gi Hong, Young Soo Ahn1, Chan Ju Song1, Bum Jin Kwon1, and In Kyu Song†
  • School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Shinlim-dong, Kwanak-ku, Seoul 151-744, South Korea
  • 1S-Oil Corporation, Onsan-eup, Ulju-gun, Ulsan 689-982, South Korea
E-mail:
A series of ZnO(0.64)-CeO2(0.26)-MO(0.1) (MO: La2O3, Y2O3, Co2O3, Ga2O3, and ZrO2) and ZnO(0.7)-CeO2(0.3) catalysts with a fixed molar composition (value in parenthesis) were prepared by a sol-gel method for use in the urea methanolysis to dimethyl carbonate (DMC). Effect of acidity and basicity of ZnO(0.64)-CeO2(0.26)-MO(0.1) on the catalytic performance was investigated. Experimental results revealed that basicity of the catalysts played more important role in determining the catalytic performance than acidity. Yield of DMC increased with increasing basicity of the catalyst. Among the catalysts tested, ZnO(0.64)-CeO2(0.26)-La2O3(0.1) with the largest basicity exhibited the best catalytic performance (50.4% of DMC yield).
Keywords:Dimethyl carbonate;Methanol;Urea;ZnO-CeO2-MO;Basicity
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