| 铁、钒助剂对催化剂CuO／Al2O3上CO2＋H2合成甲醇影响的XPS研究 |
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| 引用本文： | 王仁国,童冬梅,张国民,胡常伟,田安民.铁、钒助剂对催化剂CuO／Al2O3上CO2＋H2合成甲醇影响的XPS研究[J].四川大学学报(自然科学版),2001,38(3):397-401. |
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| 作者姓名： | 王仁国 童冬梅 张国民 胡常伟 田安民 |
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| 作者单位： | 1. 四川农业大学基础部
2. 四川大学化学院 |
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| 基金项目： | 国家自然科学基金! (2 947310 9)，四川省应用基础研究基金 |
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| 摘 要： | 采用XPS方法研究了Fe,V助剂的加入对CuO/Al2O3催化剂的表面结构及其对合成甲醇活性的影响，结果表明，Fe,V助剂的加入能增大室温下被氧化的铜物种的表面浓度，从而提高催化剂的低温活性，Cu,Fe,V原子的表面浓度都低于体相浓度，存在向体相扩散的趋势，Fe,V在载体上浸渍的先后顺序不能确定其表面原子浓度的大小，与Cu相比，Fe和V在表面有一定程度的富集，它们还导致表面铝酸盐物种的生成。
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| 关 键 词： | XPS 助剂 铁 钒 催化剂 甲醇 |
XPS STUDY OF THE INFLUENCES OF Fe,V PROMOTERS ON CuO/Al_2O_3 CATALYST FOR THE SYNTHESIS OF MATHANOL FROM CO_2 H_2 |
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| WANG Ren guo ,TONG Dong mei ,ZHANG Guo min ,HU Chang wei ,TIAN An min.XPS STUDY OF THE INFLUENCES OF Fe,V PROMOTERS ON CuO/Al_2O_3 CATALYST FOR THE SYNTHESIS OF MATHANOL FROM CO_2 H_2[J].Journal of Sichuan University (Natural Science Edition),2001,38(3):397-401. |
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| Authors: | WANG Ren guo TONG Dong mei ZHANG Guo min HU Chang wei TIAN An min |
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| Institution: | WANG Ren guo 1,TONG Dong mei 2,ZHANG Guo min 2,HU Chang wei 2,TIAN An min 2 |
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| Abstract: | The surface structure of CuO/Al 2O 3 promoted by Fe,V were studied by XPS technique. The state and distribution of surface species and their effects on the activity of the catalysts were investigated.The results show that the concentration of copper species on the surface which could be oxidized at room temperature attribute to the activity of the catalysts.The surface atomic concentrations of copper, iron and vanadium are lower than their bulk concentrations.The aggregation of copper,iron and vanalium on the bulk differs from metal to metal ,as well as the preparation processes. It was found that the formation of surface aluminate species when Fe,V promoters are added is beneficial to the catalytic activity of the finished catalysts. |
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