상세 보기
- Suh, June Won;
- Park, Jihye;
- Jeong, Si Hoon;
- Park, Gi Hyun;
- Choi, Myung Sik;
- ... Bang, Joonho;
- 외 12명
WEB OF SCIENCE
5SCOPUS
6초록
The persistent challenge of NOx selective catalytic reduction degradation in the presence of SOx has remained unresolved for decades. In this study, we report a paradoxical boosted denitration performance more than 20% under the SOx environment through controlling the charge state of V utilizing strongly correlated electron systems (SCES) in Ni1−xVxWO4. Substitutional doped V at the Ni site, and the computed charge gap from DFT confirms the SCES. Through the manipulation of the strong correlation between V and Ni, V preserves the between + 2–3 charge state in the presence of SOx. Furthermore, we achieved a stable oxidation/reduction cycle and higher denitration efficiency by altering the oxidation point of (NH4)HSO4-contaminated Ni1−xVxWO4. This results from deliberate decrease in Coulombic repulsion between Ni and V, improving electron transfer for catalytic performance. This revelation offers a resolution of exceptional denitration performance within SOx in industrial exhaust systems, exploiting the foundational principles of SCES. © 2023 Elsevier B.V.
키워드
- 제목
- Vanadium in strongly correlated electron system Ni1-xVxWO4: Paradoxically boosted deNOx reaction under SOx environment via modulating electron correlation
- 저자
- Suh, June Won; Park, Jihye; Jeong, Si Hoon; Park, Gi Hyun; Choi, Myung Sik; Jin, Changhyun; Lee, Jung-Woo; Lee, Kimoon; Jeong, Bo Ra; Kim, Hong-Dae; Kim, Sun-Dong; Kim, Hak Joo; Kim, Sung Eun; Ji, Yunseong; Lee, Hyesung; Bang, Joonho; Lee, Kyu Hyoung; Lee, Seung Yong
- 발행일
- 2024-04
- 유형
- Article
- 권
- 343