CeO2/C有序介孔材料催化甘油转化制碳酸甘油酯  

Synthesise of ordered mesoporous CeO_2/C composites for glycerol to glycerol carbonate

作　　者：朱丹 何娅 王银[1] 杨荣榛[1] 董文生[1] 

机构地区：[1]陕西师范大学化学化工学院应用表面与胶体化学教育部重点实验室,陕西西安710119

出　　处：《工业催化》2017年第12期44-48,共5页Industrial Catalysis

基　　金：陕西省重点科技创新团队资助项目(2012KCT-21)

摘　　要：采用溶剂挥发自组装法制备有序介孔CeO_2/C复合材料,利用X射线衍射仪、N_2吸附-脱附仪和透射电子显微镜对样品进行表征,考察催化甘油酯交换制备碳酸甘油脂的催化性能。结果表明,在甘油用2 mmol、碳酸二甲酯10 mmol、有序介孔CeO_2/C复合材料0.1 g、N,N-二甲基乙酰胺5 m L、反应温度140℃和反应时间3 h条件下,CeO_2/C中CeO_2质量分数为16.3%时,甘油转化率和碳酸甘油脂选择性最高,分别为76%和81.8%。Ordered mesoporous CeO_2/C composite materials with various CeO_2 contents were synthesized by tri-component co-assembly method and tested in interesterification of glycerol to glycerol carbonate.The microstructures of the resultant samples were characterized by X-ray diffraction,N2 physical adsorption and transmission electron microscopy.The mesoporous CeO_2/C composite with the CeO_2 content of16.3% exhibited good catalytic activity in the synthesis of glycerol carbonate by the transesterification of glycerol with dimethyl carbonate.Glycerol conversion of 76% and selectivity to glycerol carbonate of 81.8% were obtained when reacting 2 mmol glycerol,10 mmol dimethyl carbonate,0.1 g catalyst in 5 mL N,N-dimethylacetamide at 140 ℃ for 3 h.

关 键 词：催化化学 有序介孔复合材料 CeO2/C 甘油 碳酸甘油酯 

分 类 号：O614.35[理学—无机化学] TQ050.47[理学—化学]