High-entropy strategies afford transition metal perovskite oxides with enhanced low-temperature NO<sub><i>x</i></sub> removal efficiency
"High-entropy exclusion" and "elementary substitution" strategies are developed to afford high-entropy perovskites (HEPs) for NH<sub>3</sub>-SCR reaction at low-temperature. Among the six metals (Mn, Fe, Co, Ni, Cr, Al), HEP-no-Al exhibits the highest catalytic activity. It was found that the rich valence states of the elements at the B-site played a crucial role in enhancing the catalytic performance. Cr at the B-site was substituted with Mo and W, and B-site substitution by Mo further improves the NO removal efficiency to 100% at 180 °C.
Authors
- Song Gao (ORCID: https://orcid.org/0000-0001-9410-3040)
- Shenghui Han
- Wanli Yi
- Ruqiang Zou (ORCID: https://orcid.org/0000-0003-0456-4615)
- Yonggang Wang (ORCID: https://orcid.org/0000-0003-4816-9182)
- Jianwen Su
- Dequan Jiang (ORCID: https://orcid.org/0000-0001-9593-249X)
- Xuan Zhang (ORCID: https://orcid.org/0009-0008-6030-0570)
Institutions
- Peking University (CN)
- Oriental Yuhong (China) (CN)
Publication Details
- Journal
- Chemical Communications
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1039/d4cc06688j
- Citations
- 2
- Primary Topic
- Catalytic Processes in Materials Science
- Type
- article
- Field-Weighted Citation Impact
- 1.04