Combining Cu-SSZ-13 with TiO2: promotion of urea decomposition and influence on SCR
文献类型：期刊论文
| 作者 | Ma, Yue2; Shao, Zhimin3; Wu, Xiaodong2; Gao, Yang2; Jin, Baofang4; Ran, Rui2; Si, Zhichun1; Li, Zhenguo5; Weng, Duan1,2 |
| 刊名 | REACTION CHEMISTRY & ENGINEERING
 |
| 出版日期 | 2022-06-09 |
| 页码 | 11 |
| ISSN号 | 2058-9883 |
| DOI | 10.1039/d2re00140c |
| 英文摘要 | Urea is applied as an ammonia source for SCR in diesel vehicles, but incomplete urea decomposition may lead to insufficiency of NH3 and deposition of solid by-products. To improve the urea decomposition activity of Cu-SSZ-13 SCR catalysts, Cu-SSZ-13 was combined with TiO2 nanoparticles by a simple impregnation method. TiO2/Cu-SSZ-13 composites exhibited lowered decomposition temperatures of urea and related solid by-products. Thus, the composited catalysts showed higher NOx conversion and a lower amount of urea-related deposits than unmodified Cu-SSZ-13 in a simulated urea deposition scenario. The superiority of the urea decomposition activity of the composited catalysts was maintained upon 800 degrees C hydrothermal aging due to stabilized anatase over the catalysts according to XRD and Raman spectroscopy. H-2-TPR, UV-vis, and STEM revealed the formation of Cu-Ti-O species due to Cu-Ti interactions, which was adverse to SCR activity, but no extra hydrothermal aging effect was observed on the composited catalysts compared with unmodified Cu-SSZ-13. This work showed the potential to improve the low-temperature urea-SCR performance of Cu-SSZ-13 via TiO2 modification. |
| WOS关键词 | SELECTIVE CATALYTIC-REDUCTION ; METAL-EXCHANGED ZEOLITES ; PHASE-TRANSFORMATION ; NH3-SCR CATALYST ; PERFORMANCE ; HYDROLYSIS ; OXIDATION ; ANATASE ; COPPER ; IMPACT |
| 资助项目 | National Key R&D Program of China[2017YFC0211202] ; National Engineering Laboratory for Mobile Source Emission Control Technology[NELMS2020A08] |
| WOS研究方向 | Chemistry ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000814712300001 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 资助机构 | National Key R&D Program of China ; National Engineering Laboratory for Mobile Source Emission Control Technology |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/53979]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Wu, Xiaodong; Weng, Duan |
| 作者单位 | 1.Tsinghua Univ, Grad Sch Shenzhen, Shenzhen 518055, Peoples R China 2.Tsinghua Univ, Sch Mat Sci & Engn, Key Lab Adv Mat Minist Educ, Beijing 100084, Peoples R China 3.Tsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R China 4.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 5.China Automot Technol & Res Ctr Co Ltd, Natl Engn Lab Mobile Source Emiss Control Technol, Tianjin 300300, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Yue,Shao, Zhimin,Wu, Xiaodong,et al. Combining Cu-SSZ-13 with TiO2: promotion of urea decomposition and influence on SCR[J]. REACTION CHEMISTRY & ENGINEERING,2022:11. |
| APA | Ma, Yue.,Shao, Zhimin.,Wu, Xiaodong.,Gao, Yang.,Jin, Baofang.,...&Weng, Duan.(2022).Combining Cu-SSZ-13 with TiO2: promotion of urea decomposition and influence on SCR.REACTION CHEMISTRY & ENGINEERING,11. |
| MLA | Ma, Yue,et al."Combining Cu-SSZ-13 with TiO2: promotion of urea decomposition and influence on SCR".REACTION CHEMISTRY & ENGINEERING (2022):11. |
入库方式： OAI收割
来源：过程工程研究所
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