Catalytic cooperation between Ru and Pd atoms on hierarchical porous Ce-based oxide for boosting engine exhaust purification
Simultaneous oxidation of soot and CH<sub>4</sub> emitted from natural gas-diesel dual fuel engine is a new challenge. Herein, a robust catalyst of binary Ru-Pd components supported on three-dimensional ordered macro-mesoporous cerium-zirconium oxide (RuPd/3DOMM-CZO) is elaborately constructed. Ordered macro-mesopore structure in novel hierarchical porous cerium-zirconium oxide can respectively enhance mass transfer of soot and gaseous reactants, and binary Ru-Pd active components can improve activation for NO and CH<sub>4</sub>. RuPd/3DOMM-CZO catalyst exhibits excellent catalytic performance and stability during simultaneous soot and CH<sub>4</sub> oxidation. Based on the results of characterizations and theoretical calculations, Ru site in binary Ru-Pd components is responsible for catalyzing NO oxidation to NO<sub>2</sub>, which is key step of NO<sub>x</sub>-assisted soot oxidation mechanism, while Pd site can activate the C-H bond of CH<sub>4</sub> for boosting oxidation to CO<sub>2</sub>; the catalytic cooperation between Ru and Pd atoms can promote the rate-determining step to realize simultaneous oxidation of soot and CH<sub>4</sub>.
Authors
- Tian Qin (ORCID: https://orcid.org/0000-0002-2856-4743)
- Linsheng Xu
- Jing Xiong (ORCID: https://orcid.org/0000-0002-9712-6771)
- Qiao Hu
- Xiaolin Yu (ORCID: https://orcid.org/0000-0003-4544-7730)
- Yuechang Wei (ORCID: https://orcid.org/0000-0002-1516-5778)
- Peng Zhang (ORCID: https://orcid.org/0000-0002-8560-0456)
- Jian‐Ping Zou (ORCID: https://orcid.org/0000-0002-3585-6541)
- Yunpeng Liu (ORCID: https://orcid.org/0000-0002-3783-0054)
- Zhen Zhao (ORCID: https://orcid.org/0000-0003-0044-5512)
- Xi Liu (ORCID: https://orcid.org/0000-0002-8654-0774)
- Yaxiao Ma
- Yuanfeng Li (ORCID: https://orcid.org/0009-0002-9139-3139)
- Hao Guo (ORCID: https://orcid.org/0000-0002-5010-2270)
Institutions
- Shanghai Jiao Tong University (CN)
- China University of Petroleum, Beijing (CN)
- Ningxia University (CN)
- Institute of High Energy Physics (AT)
- Institute of High Energy Physics (CN)
- University of Chinese Academy of Sciences (CN)
- University of Science and Technology Beijing (CN)
- Nanchang Hangkong University (CN)
Publication Details
- Journal
- Nature Communications
- Published
- 2025-08-21
- DOI
- https://doi.org/10.1038/s41467-025-63089-8
- Citations
- 14
- Primary Topic
- Catalytic Processes in Materials Science
- Type
- article
- Field-Weighted Citation Impact
- 7.25
Funders
- National Natural Science Foundation of China
- Zhejiang Normal University
- National Key Research and Development Program of China
- Beijing Synchrotron Radiation Facility