| 锰掺入对CeO2催化氧化CO性能的影响 |
| |
| 引用本文： | 张继军,刘英骏.锰掺入对CeO2催化氧化CO性能的影响[J].分子催化,1999,13(3):219-222. |
| |
| 作者姓名： | 张继军 刘英骏 |
| |
| 作者单位： | 北京大学 |
| |
| 摘 要： | 氧化铈具有萤石矿型结构，并且随着氧化还原气氛的不同，铈可以Ｃｅ４＋／Ｃｅ３＋价态存在，在结构中易于形成流动性的氧空位，这些性质使得它成为很好的催化氧化活性材料；ＣｅＯ２经贱金属掺杂之后，可进一步提高其催化氧化活性，近年来倍受人们的重视［１，２］．锰的...
|
| 关 键 词： | 氧化铈 氧化锰 Mn－Ce－O催化剂 萤石矿型复合氧化物 CO氧化 掺杂效应 |
Effect of Doping Ceria with Manganese on Catalytic Activity for CO Oxidation |
| |
| ZHANG Jijun,LIU Yingjun,ZHANG Wanjing,LIN Bingxiong.Effect of Doping Ceria with Manganese on Catalytic Activity for CO Oxidation[J].Journal of Molecular Catalysis (China),1999,13(3):219-222. |
| |
| Authors: | ZHANG Jijun LIU Yingjun ZHANG Wanjing LIN Bingxiong |
| |
| Institution: | ZHANG Jijun,LIU Yingjun1),ZHANG Wanjing,LIN Bingxiong |
| |
| Abstract: | MnCeO catalysts, synthesized by amorphous citrate
precursor (ACP) method were characterized by XRD, Microreactor and H2TPR techniques.
When the CeO2 bulk was doped with manganese ions , fluorite structure formed at low
manganese contents, while both fluorite structure and Mn3O4 formed at high manganese
contents. The catalytic activity for CO oxidation is improved by doping CeO2 matrix with
manganese ions. According to H2TPR, MnCeO(25) can be reduced more easily than Mn3O4 and
CeO2 due to the formation of fluoritetype complex oxides. The composition of MnCeO catalysts
with the highest activity is Mn0.25Ce0.75O2. |
| |
| Keywords: | Ceria Manganese oxide MnCeO catalysts Fluoritetype complex oxides CO oxidation Doping effect |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《分子催化》浏览原始摘要信息 |
| 点击此处可从《分子催化》下载免费的PDF全文 |
