Knowledge Management System Of Institute of process engineering,CAS
| Combining Cu-SSZ-13 with TiO2: promotion of urea decomposition and influence on SCR | |
| Ma, Yue1; Shao, Zhimin2; Wu, Xiaodong1; Gao, Yang1; Jin, Baofang3; Ran, Rui1; Si, Zhichun4; Li, Zhenguo5; Weng, Duan1,4 | |
| 2022-06-09 | |
| Source Publication | REACTION CHEMISTRY & ENGINEERING
 |
| ISSN | 2058-9883 |
| Pages | 11 |
| Abstract | 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. |
| DOI | 10.1039/d2re00140c |
| Language | 英语 |
| WOS Keyword | SELECTIVE CATALYTIC-REDUCTION ; METAL-EXCHANGED ZEOLITES ; PHASE-TRANSFORMATION ; NH3-SCR CATALYST ; PERFORMANCE ; HYDROLYSIS ; OXIDATION ; ANATASE ; COPPER ; IMPACT |
| Funding Project | National Key R&D Program of China[2017YFC0211202] ; National Engineering Laboratory for Mobile Source Emission Control Technology[NELMS2020A08] |
| WOS Research Area | Chemistry ; Engineering |
| WOS Subject | Chemistry, Multidisciplinary ; Engineering, Chemical |
| Funding Organization | National Key R&D Program of China ; National Engineering Laboratory for Mobile Source Emission Control Technology |
| WOS ID | WOS:000814712300001 |
| Publisher | ROYAL SOC CHEMISTRY |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/53980 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Wu, Xiaodong; Weng, Duan |
| Affiliation | 1.Tsinghua Univ, Sch Mat Sci & Engn, Key Lab Adv Mat Minist Educ, Beijing 100084, Peoples R China 2.Tsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R China 3.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 4.Tsinghua Univ, Grad Sch Shenzhen, Shenzhen 518055, Peoples R China 5.China Automot Technol & Res Ctr Co Ltd, Natl Engn Lab Mobile Source Emiss Control Technol, Tianjin 300300, Peoples R China |
| Recommended Citation 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. |
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