| Ni-M(M=Cu，Zn，Ce)/C双金属催化剂上的乙醇气相羰化 |
| Vapor Phase Carbonylation of Ethanol over Ni-M(M=Cu, Zn, Ce)/C Catalysts |
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| 摘要: 利用等体积浸渍法制备了NiM0.2(M=Cu, Zn, Ce)/C双金属催化剂及Ni/C催化剂，考察了其乙醇气相羰化制丙酸的活性。结果表明，4种催化剂的活性大小顺序为NiCe0.2/C＞Ni/C＞NiCu0.2/C＞NiZn0.2/C，催化剂NiCe0.2/C的羰化活性最高，乙醇转化率和丙酸的选择性分别为98.0%和95.1%，而催化剂NiZn0.2/C的羰化活性最低，乙醇转 |
| 关键词: 乙醇 活性炭 气相羰化 助剂 丙酸 |
| 基金项目: |
| Abstract: A series of NiM0.2(M=Cu, Zn, Ce)/C and Ni/C catalysts were prepared by isometric impregnation method for vapor phase carbonylation of ethanol. The activity testing results revealed that the activity of four catalysts was in the order of NiCe0.2/C＞Ni/C＞NiCu0.2/C＞NiZn0.2/C，and the NiCe0.2/C catalyst showed maximum catalytic activity for carbonylation of ethanol with the ethanol conversion of 98.0% and the propionic acid selectivity of 95.1% in comparison with other catalysts, but the NiZn0.2/C catalyst showed minimum activity with the ethanol conversion of 83.6% and the propionic acid selectivity of 75.8%. The catalysts were characterized by means of metal dispersion test, XRD, H2-TPR and CO-TPD. It was found that a certain interaction between ceria and nickel species was confirmed to level the reduction temperature of nickel oxide down, avoiding effectively from bigger nickel crystallites, thereby increasing the metal dispersion of nickel species on the surface of active carbon. |
| Keywords: ethanol active carbon vapor-phase carbonylation additives propionic acid |
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| 章 青,王会芳,孙果宋,黄科林,方维平,杨意泉.Ni-M(M=Cu，Zn，Ce)/C双金属催化剂上的乙醇气相羰化[J].无机化学学报,2009,25(8):1384-1388. |
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