Effects of post-treatment method and Na co-cation on the hydrothermal stability of Cu-SSZ-13 catalyst for the selective catalytic reduction of NOx with NH3
文献类型：期刊论文
| 作者 | Xie, Lijuan; Liu, Fudong; Shi, Xiaoyan; Xiao, Feng-Shou; He, Hong |
| 刊名 | APPLIED CATALYSIS B-ENVIRONMENTAL
 |
| 出版日期 | 2015-11 |
| 卷号 | 179期号:1页码:206-212 |
| 关键词 | Cu-SSZ-13 One-pot synthesis method NH3-SCR Na+ ions Hydrothermal stability |
| 英文摘要 | Post-treatment with dilute HNO3 solution after one-pot synthesis was an effective method to prepare excellent Cu-SSZ-13 catalysts for the selective catalytic reduction of NOx with NH3 (NH3-SCR). Using solutions with varying levels of acidity, catalysts with different Cu and Na contents were obtained, and the Cu3.9Na0.8-SSZ-13 catalyst showed the optimal NH3-SCR activity and hydrothermal stability. As co-cations, Na+ ions affected the hydrothermal stability of the one-pot-synthesized Cu-SSZ-13 catalysts greatly. Poorer hydrothermal stability was observed for catalysts with higher Na+ contents. The results of Al-27 and Si-29 NMR spectra proved that Na+ ions did not influence the Si(nAl) distributions in the catalysts significantly. However, H-2-TPR profiles indicated that excess Na+ ions in the catalysts decreased the stability of Cu species seriously. Thus, poor stability of Cu species caused by excess Na+ ions was the direct reason for the poor hydrothermal stability of the catalysts. Because of the negative effect on hydrothermal stability, excess Na+ ions should be avoided in Cu-SSZ-13 catalysts prepared by the one-pot synthesis method. (C) 2015 Elsevier B.V. All rights reserved. |
| 研究领域[WOS] | Chemistry, Physical ; Engineering, Environmental ; Engineering, Chemical |
| WOS记录号 | WOS:000359873800024 |
| 公开日期 | 2016-03-15 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/32473]  |
| 专题 | 生态环境研究中心_大气污染控制中心 |
| 推荐引用方式 GB/T 7714 | Xie, Lijuan,Liu, Fudong,Shi, Xiaoyan,et al. Effects of post-treatment method and Na co-cation on the hydrothermal stability of Cu-SSZ-13 catalyst for the selective catalytic reduction of NOx with NH3[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2015,179(1):206-212. |
| APA | Xie, Lijuan,Liu, Fudong,Shi, Xiaoyan,Xiao, Feng-Shou,&He, Hong.(2015).Effects of post-treatment method and Na co-cation on the hydrothermal stability of Cu-SSZ-13 catalyst for the selective catalytic reduction of NOx with NH3.APPLIED CATALYSIS B-ENVIRONMENTAL,179(1),206-212. |
| MLA | Xie, Lijuan,et al."Effects of post-treatment method and Na co-cation on the hydrothermal stability of Cu-SSZ-13 catalyst for the selective catalytic reduction of NOx with NH3".APPLIED CATALYSIS B-ENVIRONMENTAL 179.1(2015):206-212. |
入库方式： OAI收割
来源：生态环境研究中心
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