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
文献类型：期刊论文
| 作者 | Lv GX(吕功煊) ; Lv GX(吕功煊)
|
| 刊名 | Journal of Power Sources
 |
| 出版日期 | 2008 |
| 卷号 | 181页码:120-126 |
| 关键词 | CO oxidation PROX Pt/SiO2 Rare earth oxide |
| ISSN号 | 0378-7753 |
| 通讯作者 | 吕功煊 |
| 中文摘要 | 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. |
| 学科主题 | 环境催化与清洁能源 |
| 收录类别 | SCI |
| 资助信息 | The 973 (G20000264) Research Fund |
| 语种 | 英语 |
| 公开日期 | 2012-11-09 |
| 源URL | [http://210.77.64.217/handle/362003/1897]  |
| 专题 | 兰州化学物理研究所_OSSO国家重点实验室 兰州化学物理研究所_ERC国家工程研究中心 |
| 通讯作者 | Lv GX(吕功煊); Lv GX(吕功煊) |
| 推荐引用方式 GB/T 7714 | Lv GX,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 | 吕功煊,&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 | 吕功煊,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. |
入库方式： OAI收割
来源：兰州化学物理研究所
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