NO selective reduction by hydrogen on potassium titanate supported palladium catalyst
文献类型：期刊论文
| 作者 | Li, Landong ; Zhang, Fuxiang ; Guan, Naijia ; Schreier, Ellen ; Richter, Manfred |
| 刊名 | CATALYSIS COMMUNICATIONS
 |
| 出版日期 | 2008-05-15 |
| 卷号 | 9期号:9页码:1827-1832 |
| 关键词 | palladium titanate hydrogen NO reduction |
| 英文摘要 | Potassium titanate (K2O-6TiO(2)) nanowires were successfully prepared by alkali treatment of TiO2 (79% anatase, 21% rutile) under autogenous pressure in a Teflon-lined autoclave at 200 degrees C. After further modification with 1 wt.% Pd by wet impregnation, the calcined and pre-reduced Pd/K2O-6TiO(2) catalyst was applied for selective reduction of NOx by H-2 (H-2-SCR) under lean conditions, together with Pd/Al2O3 and Pd/TiO2 as reference. The reference catalysts exhibited maximum NO conversion of about 50-60% at 100-130 degrees C, but with low N-2 selectivity. The N-2 selectivity on Pd/K2O-6TiO(2) was considerably high, reaching 80% at maximum, with only 11% conversion of the admixed hydrogen reductant. In situ DRIFT spectroscopy revealed surface-fixed nitrates and Pd-bound NO, but no NHx ad-species. It is concluded, that the beneficial effect of the K2O-6TiO(2) support is due mainly to a stabilization of high Pd dispersion with enhanced concentration of Pd-0-NO intermediates, and due to support alkalinity, that enhances nitrate fixation. (C) 2008 Elsevier B.V. All rights reserved. |
| WOS记录号 | WOS:000256183700007 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/21891]  |
| 专题 | 生态环境研究中心_大气环境科学实验室 |
| 推荐引用方式 GB/T 7714 | Li, Landong,Zhang, Fuxiang,Guan, Naijia,et al. NO selective reduction by hydrogen on potassium titanate supported palladium catalyst[J]. CATALYSIS COMMUNICATIONS,2008,9(9):1827-1832. |
| APA | Li, Landong,Zhang, Fuxiang,Guan, Naijia,Schreier, Ellen,&Richter, Manfred.(2008).NO selective reduction by hydrogen on potassium titanate supported palladium catalyst.CATALYSIS COMMUNICATIONS,9(9),1827-1832. |
| MLA | Li, Landong,et al."NO selective reduction by hydrogen on potassium titanate supported palladium catalyst".CATALYSIS COMMUNICATIONS 9.9(2008):1827-1832. |
入库方式： OAI收割
来源：生态环境研究中心
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