| High performance rare earth oxides LnOx (Ln = La, Ce, Nd, Sm and Dy)-modified Pt/SiO2 catalysts for CO oxidation in the presence of H2 | |
| Department | 羰基合成与选择氧化国家重点实验室 ; 精细石油化工中间体国家工程研究中心 |
Wang F(王芳); Lv GX(吕功煊)
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| 2008 | |
| Source Publication | Journal of Power Sources
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| ISSN | 0378-7753 |
| Volume | 181Pages:120-126 |
| Abstract | The catalytic activities of low-temperature CO oxidation and preferential CO oxidation (PROX) in rich-H2 stream over the Pt/SiO2 and rare earth oxides modified Pt/SiO2 catalysts have been investigated. The addition of rare earth oxide additives to the Pt/SiO2 catalyst can promote the catalytic performance remarkably. The catalytic activities for PROX are dependent on the basicities of these oxides. The higher basic strength leads to higher activity. For Pt–CeO2/SiO2, the catalytic activity depends strongly on the content of CeO2 and on the mole ratio of CO/O2. XRD and H2-temperature-programmed reduction (TPR) results showthat the additives not only improve the dispersion of metallic Pt on the support surface, but also increase the reducibility of PtOx in Pt–CeO2/SiO2. The formation of the Pt–Ce alloy decreases the electron backdonation from the Pt 5d orbital to the 2 * orbital of CO, and consequently suppresses CO–Pt bonding, resulting in the lowered CO coverage. |
| Keyword | Co Oxidation Prox Pt/sio2 Rare Earth Oxide |
| Subject Area | 环境催化与清洁能源 |
| Funding Organization | The 973 (G20000264) Research Fund |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 环境催化与清洁能源研究组 ; 环境催化与氢能源研究组 |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/1897 |
| Collection | 羰基合成与选择氧化国家重点实验室（OSSO） 精细石油化工中间体国家工程研究中心（ERC） |
| Corresponding Author | Lv GX(吕功煊) |
| Recommended Citation GB/T 7714 | Wang F,Lv GX. High performance rare earth oxides LnOx (Ln = La, Ce, Nd, Sm and Dy)-modified Pt/SiO2 catalysts for CO oxidation in the presence of H2[J]. Journal of Power Sources,2008,181:120-126. |
| APA | 王芳,&吕功煊.(2008).High performance rare earth oxides LnOx (Ln = La, Ce, Nd, Sm and Dy)-modified Pt/SiO2 catalysts for CO oxidation in the presence of H2.Journal of Power Sources,181,120-126. |
| MLA | 王芳,et al."High performance rare earth oxides LnOx (Ln = La, Ce, Nd, Sm and Dy)-modified Pt/SiO2 catalysts for CO oxidation in the presence of H2".Journal of Power Sources 181(2008):120-126. |
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