Formation of hydrided Pt-Ce-H sites in efficient, selective oxidation catalysts
Single-atom site catalysts can improve the rates and selectivity of many catalytic reactions. We have modified Pt<sub>1</sub>/CeO<sub>2</sub> single sites by combining them with molecular groups and with oxygen vacancies of the support. The new sites include hydrided (Pt<sup>2+</sup>-Ce<sup>3+</sup>H<sup>δ-</sup>) and hydroxylated (Pt<sup>2+</sup>-Ce<sup>3+</sup>OH) sites that exhibit higher reactivity and selectivity to previous single sites for several reactions, including a ninefold increase in the reaction rate for carbon monoxide oxidation and a 2.3-fold improvement of propylene selectivity for oxidative dehydrogenation of propane. The atomic structure and reaction steps of these sites were determined with in situ and ex situ spectroscopy techniques and theoretical methods.
Authors
- Shengdong Tan (ORCID: https://orcid.org/0009-0000-5305-393X)
- Siyang Yan (ORCID: https://orcid.org/0000-0002-5171-990X)
- Shuchen Zhang (ORCID: https://orcid.org/0000-0001-8560-0045)
- Sudong Chae (ORCID: https://orcid.org/0000-0003-1391-3266)
- Yongqiang Q. Cheng (ORCID: https://orcid.org/0000-0002-3263-4812)
- Lorenz J. Falling (ORCID: https://orcid.org/0000-0002-2622-5166)
- Ji Su (ORCID: https://orcid.org/0000-0003-2258-162X)
- Jiaxu Liu (ORCID: https://orcid.org/0000-0003-0815-3979)
- Bingqing Yao (ORCID: https://orcid.org/0000-0002-7769-021X)
- Yanbing Guo (ORCID: https://orcid.org/0000-0002-5399-1739)
- Miquel Salmerón (ORCID: https://orcid.org/0000-0002-2887-8128)
- Qian He (ORCID: https://orcid.org/0000-0003-4891-3581)
- Zili Wu (ORCID: https://orcid.org/0000-0002-4468-3240)
- Jeng‐Lung Chen (ORCID: https://orcid.org/0000-0002-0223-5538)
- Xiao Zhao (ORCID: https://orcid.org/0000-0003-1079-664X)
- Pragya Verma (ORCID: https://orcid.org/0000-0002-5722-0894)
- Biluan Zhang
- David Prendergast (ORCID: https://orcid.org/0000-0003-0598-1453)
- Ji Yang (ORCID: https://orcid.org/0000-0002-3997-385X)
- Slavomír Nemšák (ORCID: https://orcid.org/0000-0002-6103-2925)
- Luke Daemen
Institutions
- Oak Ridge National Laboratory (US)
- Lawrence Berkeley National Laboratory (US)
- National University of Singapore (SG)
- Dalian University of Technology (CN)
- Central China Normal University (CN)
- Dalian University (CN)
- National Synchrotron Radiation Research Center (TW)
- University of California, Berkeley (US)
Publication Details
- Journal
- Science
- Published
- 2025-04-04
- DOI
- https://doi.org/10.1126/science.adv0735
- Citations
- 39
- Primary Topic
- Catalytic Processes in Materials Science
- Type
- article
- Field-Weighted Citation Impact
- 20.19
Funders
- U.S. Department of Energy
- Alexander von Humboldt-Stiftung
- National Research Foundation
- National Research Foundation Singapore
- National Science and Technology Council
- Office of Science
- Basic Energy Sciences
- Chemical Sciences, Geosciences, and Biosciences Division
- Oak Ridge National Laboratory
- Lawrence Berkeley National Laboratory