Effect of calcination temperature and reaction conditions on methane partial oxidation using lanthanum-based perovskite as oxygen donor
文献类型：期刊论文
| 作者 | Dai Xiaoping ; Yu Changchun ; Li Ranjia ; Wu Qiong ; Shi Kaijiao ; Hao Zhengping |
| 刊名 | JOURNAL OF RARE EARTHS
 |
| 出版日期 | 2008-06 |
| 卷号 | 26期号:3页码:341-346 |
| 关键词 | perovskite LaFeO3 lattice oxygen synthesis gas redox reaction rare earths |
| 英文摘要 | We investigated the effect of calcination temperature, reaction temperature, and different amounts of replenished lattice oxygen on the partial oxidation of methane (POM) to synthesis gas using perovskite-type LaFeO3 oxide as oxygen donor instead of gaseous oxygen, which was prepared by the sol-gel method, and the oxides were characterized by XRD, TG/DTA, and BET. The results indicated that the particle size increased with the calcination temperature increasing, while BET and CH4 conversion declined with the calcination temperature increasing using LaFeO3 oxide as oxygen donor in the absence of gaseous oxygen. CO selectivity remained at a high level such as above 92%, and increased slightly as the calcination temperature increased. Exposure of LaFeO3 oxides to methane atmosphere enhanced the oxygen migration of in the bulk with time online owing to the loss of lattice oxygen and reduction of the oxidative stated Fe ion simultaneously. The high reaction temperature was favorable to the migration of oxygen species from the bulk toward the surface for the synthesis gas production with high CO selectivity. The product distribution and evolution for POM by sequential redox reaction was determined by amounts of replenished lattice oxygen with gaseous oxygen. The optimal process should decline the total oxidation of methane, and increase the selectivity of partial oxidation of methane. |
| WOS记录号 | WOS:000258476900007 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/22031]  |
| 专题 | 生态环境研究中心_环境纳米材料实验室 |
| 推荐引用方式 GB/T 7714 | Dai Xiaoping,Yu Changchun,Li Ranjia,et al. Effect of calcination temperature and reaction conditions on methane partial oxidation using lanthanum-based perovskite as oxygen donor[J]. JOURNAL OF RARE EARTHS,2008,26(3):341-346. |
| APA | Dai Xiaoping,Yu Changchun,Li Ranjia,Wu Qiong,Shi Kaijiao,&Hao Zhengping.(2008).Effect of calcination temperature and reaction conditions on methane partial oxidation using lanthanum-based perovskite as oxygen donor.JOURNAL OF RARE EARTHS,26(3),341-346. |
| MLA | Dai Xiaoping,et al."Effect of calcination temperature and reaction conditions on methane partial oxidation using lanthanum-based perovskite as oxygen donor".JOURNAL OF RARE EARTHS 26.3(2008):341-346. |
入库方式： OAI收割
来源：生态环境研究中心
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