Characterization of na-rh/gamma-al2o3 catalyst and its catalytic properties for selective oxidation of co
文献类型：期刊论文
| 作者 | Wang Fang; Lu Gongxuan |
| 刊名 | Chinese journal of catalysis
 |
| 出版日期 | 2007 |
| 卷号 | 28期号:1页码:27-33 |
| 关键词 | Carbon monoxide Selective oxidation Promoter Sodium Rhodium catalyst Alumina Fuel cell |
| ISSN号 | 0253-9837 |
| 通讯作者 | Wang fang() |
| 英文摘要 | A novel active catalyst of na-rh/gamma-al2o3 was prepared by impregnation and characterized by x-ray diffraction, x-ray photoelectron spectroscopy, and n-2 adsorption-desorption. the catalytic performance of rh/-gamma-al2o3 and na-rh/gamma-al2o3 catalysts for the selective oxidation of co in the presence of excess hydrogen was compared, and the effect of pretreatment on the catalytic activity was investigated. the 5% na-0.5% rh/gamma-al2o3 catalyst maintains its activity for co oxidation for more than 100 h in the presence of hydrogen and moisture. the conversion of co and co2 selectivity up to 100% and 70%, respectively, were obtained at 100 degrees c, ghsv = 2.25 x 10(4) h(-1), 1.4% o-2, 2% co, and 70% h-2. xps results indicated that the electronic interaction between na and rh causes a transfer of electron density from na to rh, which increases the back-donation of electrons from the filled d orbitals of rh to the co 2 pi* antibonding molecular orbitals and results in a weakening of the c=o bond. highly dispersed rh was found on the surface of the promoted catalysts. n-2 adsorption-desorption results revealed that the specific surface area decreases after the addition of na, but the average pore size becomes larger, which provides more spaces for co oxidation. |
| WOS关键词 | CARBON-MONOXIDE ; H-2-RICH GAS ; HYDROGEN ; PERFORMANCE ; RH/AL2O3 ; KINETICS ; PT/AL2O3 ; PROMOTER ; REMOVAL ; CU(100) |
| WOS研究方向 | Chemistry ; Engineering |
| WOS类目 | Chemistry, Applied ; Chemistry, Physical ; Engineering, Chemical |
| 语种 | 英语 |
| WOS记录号 | WOS:000244429200007 |
| 出版者 | SCIENCE CHINA PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2380129 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Wang Fang |
| 作者单位 | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang Fang,Lu Gongxuan. Characterization of na-rh/gamma-al2o3 catalyst and its catalytic properties for selective oxidation of co[J]. Chinese journal of catalysis,2007,28(1):27-33. |
| APA | Wang Fang,&Lu Gongxuan.(2007).Characterization of na-rh/gamma-al2o3 catalyst and its catalytic properties for selective oxidation of co.Chinese journal of catalysis,28(1),27-33. |
| MLA | Wang Fang,et al."Characterization of na-rh/gamma-al2o3 catalyst and its catalytic properties for selective oxidation of co".Chinese journal of catalysis 28.1(2007):27-33. |
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来源：中国科学院大学
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