Improving catalytic performance with sulfur resistance over Co-Cr layered double oxide for low temperature NH3-SCR
SCIE
SCOPUS
- Title
- Improving catalytic performance with sulfur resistance over Co-Cr layered double oxide for low temperature NH3-SCR
- Authors
- Yoon, Wongeun; Lee, Seungjun; Maeng, Junbeom; Jeon, Namgi; Yun, Yongju; Kim, Youngmin; Chae, H-J; Kim, Won Bae
- Date Issued
- 2023-01
- Publisher
- Elsevier BV
- Abstract
- In this study, a series of Co-Cr layered double oxide catalysts are prepared and used for low temperature selective catalytic reduction of NO by NH3 (NH3-SCR). The Co-Cr layered double oxide catalyst exhibits the improved catalytic performance for NH3-SCR with a better tolerance against sulfur compounds in the feed stream. The unique structural property, surface acidity, redox ability, increased structure distortion and Cr reduction properties of Co-Cr layered double oxide catalysts were responsible for the improved NOx removal efficiency in the NH3-SCR. In the presence of SO2, the Co-Cr layered double oxide catalyst was sulfated and chromium sulfate species was formed. The sulfate Co-Cr layered structure catalyst showed higher NOx conversions than the fresh catalyst with a high SO2 resistance caused by an improvement of acidity. The enhanced catalytic activity and sulfur tolerance should suggest that the Co-Cr layered double oxide catalyst could be used as an effective catalyst for low temperature NH3-SCR reaction. © 2022 Elsevier B.V.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/114855
- DOI
- 10.1016/j.cej.2022.139561
- ISSN
- 1385-8947
- Article Type
- Article
- Citation
- Chemical Engineering Journal, vol. 452, no. 4, page. 139561, 2023-01
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