关键词: 碳基固体酸, 碳酸二甲酯, 碳酸甲丙酯, 酯交换

Abstract: A carbon-based solid acid catalyst was prepared by using glucose as raw material.The impact of preparation parameters on catalyst activity was investigated by using transesterification between dimethyl carbonate (DMC) and propyl alcohol as model reaction.The results showed that optimal catalytic activity was attained over the catalyst carbonized at 300℃ for 2 h，sulphonated at 130 ℃ for 10 h and mass ratio of sulfuric acid to carbon material 100.Under optimal transesterification conditions∶mole ratio of propyl alcohol to DMC 2，reaction temperature 90 ℃，reaction time 5h and mass ratio of catalyst to total raw materials 4%.Conversion of DMC and selectivity to methyl propyl carbonate (MPC) were about 40% and 90%，respectivdy.There was very little change in the catalytic activity of the regenerated catalyst after four cycles.

Key words: carbon-based solid acid, dimethyl carbonate, methyl propyl carbonate, transesterification