| CeO_2-Al_2O_3负载金催化剂用于水煤气变换反应的催化活性 |
| |
| 引用本文： | 于强强,董园园,廖卫平,金明善,何涛,索掌怀.CeO_2-Al_2O_3负载金催化剂用于水煤气变换反应的催化活性[J].燃料化学学报,2010,38(2). |
| |
| 作者姓名： | 于强强 董园园 廖卫平 金明善 何涛 索掌怀 |
| |
| 作者单位： | 烟台大学,应用催化研究所,山东,烟台,264005 |
| |
| 基金项目： | 国家自然科学基金，山东省自然科学基金 |
| |
| 摘 要： | 采用浸渍法和沉积-沉淀法制备了CeO2-Al2O3复合氧化物,比较了复合氧化物负载纳米金催化剂对水煤气变换反应的催化活性。通过N2物理吸附、XRD、TEM、H2-TPR等表征手段对复合氧化物及其负载金催化剂的物相和结构进行分析,发现复合氧化物的制备方法及其焙烧温度对其比表面积、孔结构及水煤气变换反应活性有明显的影响。与沉积-沉淀法相比,浸渍法制备的CeO2-Al2O3复合氧化物具有较大的CeO2晶粒尺寸,经500℃焙烧后再负载金,所得催化剂具有更高的活性,250℃时CO转化率可达78.1%。
|
| 关 键 词： | 氧化铝 氧化铈 复合氧化物 金催化剂 水气变换反应 |
Preparation of ceria-alumina and catalytic activity of gold catalyst supported on ceria-alumina for water gas shift reaction |
| |
| YU Qiang-qiang,DONG Yuan-yuan,LIAO Wei-ping,JIN Ming-shan,HE Tao,SUO Zhang-huai.Preparation of ceria-alumina and catalytic activity of gold catalyst supported on ceria-alumina for water gas shift reaction[J].Journal of Fuel Chemistry and Technology,2010,38(2). |
| |
| Authors: | YU Qiang-qiang DONG Yuan-yuan LIAO Wei-ping JIN Ming-shan HE Tao SUO Zhang-huai |
| |
| Institution: | YU Qiang-qiang,DONG Yuan-yuan,LIAO Wei-ping,JIN Ming-shan,HE Tao,SUO Zhang-huai(Institute of Applied Catalysis,Yantai University,Yantai 264005,China) |
| |
| Abstract: | Ceria-alumina composite oxides with different ceria loadings(5%,10%,20%,25%,and 30%) were prepared by impregnation method and deposition-precipitation method,respectively.Gold catalysts supported on these oxides were used to water gas shift reaction.All samples were characterized by nitrogen adsorption,X-ray diffraction(XRD),transmission electron microscopy(TEM) and hydrogen temperature-programmed reduction(H2-TPR).It is found that the preparation method and calcination temperature of ceria-alumina oxides h... |
| |
| Keywords: | alumina ceria composite oxide supported gold catalyst water gas shift reaction |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
