| Pd基催化剂上H2快速选择催化还原 NOx |
| |
| 引用本文： | 于青,孔凡晓,李兰冬,武光军,关乃佳.Pd基催化剂上H2快速选择催化还原 NOx[J].催化学报,2010,31(3):261-263. |
| |
| 作者姓名： | 于青 孔凡晓 李兰冬 武光军 关乃佳 |
| |
| 作者单位： | 南开大学化学学院新催化材料研究所,天津,300071 |
| |
| 基金项目： | 国家自然科学基金(20703057,20973094);;科技部国际科技合作计划(2007DFA90720) |
| |
| 摘 要： | 首次研究了 Pd 基催化剂上氢快速选择催化还原 NOx 反应 (快速 H2-SCR 反应). 结果表明, Pd/Al2O3 和 Pd/SiO2 催化剂表现出极高的活性, 在 200 oC 以上时 NOx 转化率可达 100%; 但 Pd/MgO 催化剂在整个考察温度范围均没有活性, 这表明载体对催化剂快速 H2-SCR 活性有决定性作用. 与常规 H2-SCR 反应相比, 快速 H2-SCR 反应明显提高了 NOx 的消除效率. 原位漫反射红外光谱结果表明, 快速 H2-SCR 反应活性的提高来源于加速生成的氨物种以及后续反应速率的加快.
|
| 关 键 词： | 快速选择催化还原 钯 氢 一氧化氮 二氧化氮 氨 |
| 收稿时间： | 2010-03-25 |
Fast Catalytic Reduction of NOx by H2 over Pd-Based Catalysts |
| |
| YU Qing,KONG Fanxiao,LI Landong,WU Guangjun,GUAN Naijia.Fast Catalytic Reduction of NOx by H2 over Pd-Based Catalysts[J].Chinese Journal of Catalysis,2010,31(3):261-263. |
| |
| Authors: | YU Qing KONG Fanxiao LI Landong WU Guangjun GUAN Naijia |
| |
| Institution: | Institute of New Catalytic Materials Science, College of Chemistry, Nankai University, Tianjin 300071, China |
| |
| Abstract: | Fast selective catalytic reduction of NOx by hydrogen (fast H2-SCR) was studied for the first time over Pd-based catalysts. Pd/Al2O3 and Pd/SiO2 exhibited attractive activity and gave 100% NOx conversion above 200 oC. In contrast, Pd/MgO had no activity. The supports had a decisive effect on the performance of the catalysts in fast H2-SCR reaction. Compared with the standard H2-SCR process, a significant enhancement of de-NOx efficiency was achieved in the fast H2-SCR process. In situ DRIFT data indicated t... |
| |
| Keywords: | fast selective catalytic reduction palladium hydrogen nitrogen monoxide nitrogen dioxide ammonia |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《催化学报》浏览原始摘要信息 |
| 点击此处可从《催化学报》下载免费的PDF全文 |
|
