| 催化剂Pd/TiO2-Al2O3低温下催化甲烷燃烧活性及18O同位素交换性能 |
| |
| 引用本文： | 林伟,林莉,朱月香,谢有畅,K. Scheurell,E.Kemnitz.催化剂Pd/TiO2-Al2O3低温下催化甲烷燃烧活性及18O同位素交换性能[J].中国化学,2005,23(10):1333-1338. |
| |
| 作者姓名： | 林伟 林莉 朱月香 谢有畅 K. Scheurell E.Kemnitz |
| |
| 作者单位： | [1]State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China [2]Institute of Chemistry, Humboldt University, Brook Taylor Street 2, Berlin D-12489, Germany |
| |
| 基金项目： | Project supported by the Major State Basic Research Development Program （No. G2000077503）, the National Natural Science Foundation of China （No. 20173002）, and Cooperation Project between NSFC and DFG （No. 20411130104）. |
| |
| 摘 要： | Pd supported on TiO2-Al2O3 binary oxides prepared by coprecipitation method has been investigated for the total oxidation of methane. All Pd/TiO2-Al2O3 catalysts show higher activity than Pd/Al2O3 and Pd/TiO2. Among them, Pd/2Ti-3Al with a Ti/Al ratio of 2 to 3 has a T90% of 395 ℃ at a gas hourly mass velocity of 33000 mL/（h＊g）, which is at least 50 ℃ lower than that of Pd supported on single metal oxide Al2O3 or TiO2. The results of TPR and ^180-isotope exchange experiments demonstrated that the excellent activity of Pd/2Ti-3Al was due to its high oxygen mobility and moderate reducibility, which is in accordance with our previous work, XPS results indicated that the dispersion of Pd was not the key factor to influence the catalytic activity.
|
| 关 键 词： | 甲烷 氧化反应 同位素 温度条件 环境友好性 |
| 收稿时间： | 2004-12-08 |
| 修稿时间： | 2004-12-082005-06-21 |
Novel Pd/TiO2-Al2O3 Catalysts for Methane Total Oxidation at Low Temperature and Their ^18O-Isotope Exchange Behavior |
| |
| Lin Wei;Lin Li;Zhu YueXiang;Xie YouChang;SCHEURELL,;K;KEMNITZ,;E..Novel Pd/TiO2-Al2O3 Catalysts for Methane Total Oxidation at Low Temperature and Their ^18O-Isotope Exchange Behavior[J].Chinese Journal of Chemistry,2005,23(10):1333-1338. |
| |
| Authors: | Lin Wei;Lin Li;Zhu YueXiang;Xie YouChang;SCHEURELL ;K;KEMNITZ ;E |
| |
| Abstract: | Pd supported on TiO2‐Al2O3 binary oxides prepared by coprecipitation method has been investigated for the total oxidation of methane. All Pd/TiO2‐Al2O3 catalysts show higher activity than Pd/Al2O3 and Pd/TiO2. Among them, Pd/2Ti‐3Al with a Ti/Al ratio of 2 to 3 has a T90% of 395 °C at a gas hourly mass velocity of 33000 mL/(h·g), which is at least 50 °C lower than that of Pd supported on single metal oxide Al2O3 or TiO2. The results of TPR and 18O‐isotope exchange experiments demonstrated that the excellent activity of Pd/2Ti‐3Al was due to its high oxygen mobility and moderate reducibility, which is in accordance with our previous work. XPS results indicated that the dispersion of Pd was not the key factor to influence the catalytic activity. |
| |
| Keywords: | methane total oxidation palladium TiO2-Al2O3 composite reducibility oxygen mobility |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《中国化学》浏览原始摘要信息 |
| 点击此处可从《中国化学》下载免费的PDF全文 |
