Suppressing COx in oxidative dehydrogenation of propane with dual-atom catalysts
Abstract Oxidative dehydrogenation of propane (ODHP) is a promising route for propylene production, but achieving high selectivity towards propylene while minimizing COx byproducts remains a significant challenge for conventional metal oxide catalysts. Here we propose a solution to this challenge by...
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Nature Portfolio
2025-05-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-59376-z |
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| author | Yongbin Yao Jingnan Wang Fei Lu Wenlin Li Bingbao Mei Lifeng Zhang Wensheng Yan Fangli Yuan Guiyuan Jiang Sanjaya D. Senanayake Xi Wang |
| author_facet | Yongbin Yao Jingnan Wang Fei Lu Wenlin Li Bingbao Mei Lifeng Zhang Wensheng Yan Fangli Yuan Guiyuan Jiang Sanjaya D. Senanayake Xi Wang |
| author_sort | Yongbin Yao |
| collection | DOAJ |
| description | Abstract Oxidative dehydrogenation of propane (ODHP) is a promising route for propylene production, but achieving high selectivity towards propylene while minimizing COx byproducts remains a significant challenge for conventional metal oxide catalysts. Here we propose a solution to this challenge by employing atomically dispersed dual-atom catalysts (M1M'1-TiO2 DACs). Ni1Fe1-TiO2 DACs exhibit an ultralow COx selectivity of 5.2% at a high propane conversion of 46.1% and 520 °C, with stable performance for over 1000 hours. Mechanistic investigations reveal that these catalysts operate via a cooperative Langmuir-Hinshelwood mechanism, distinct from the Mars-van Krevelen mechanism typical of metal oxides. This cooperative pathway facilitates efficient conversion of propane and oxygen into propylene at the dual-atom interface. The superior selectivity arises from facile olefin desorption from the dual-atom sites and suppressed formation of electrophilic oxygen species, which are preferentially adsorbed on Fe1 sites rather than oxygen vacancies. This work highlights the potential of dual-atom catalysts for highly selective ODHP and provides insights into their unique catalytic mechanism. |
| format | Article |
| id | doaj-art-2e5cc0a03ede4aacab55c587add53fd4 |
| institution | DOAJ |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-2e5cc0a03ede4aacab55c587add53fd42025-08-20T03:08:43ZengNature PortfolioNature Communications2041-17232025-05-0116111110.1038/s41467-025-59376-zSuppressing COx in oxidative dehydrogenation of propane with dual-atom catalystsYongbin Yao0Jingnan Wang1Fei Lu2Wenlin Li3Bingbao Mei4Lifeng Zhang5Wensheng Yan6Fangli Yuan7Guiyuan Jiang8Sanjaya D. Senanayake9Xi Wang10Key Laboratory of Luminescence and Optical Information, Ministry of Education, School of Physical Science and Engineering, Beijing Jiaotong UniversityInstitute of Molecular Engineering Plus, College of Chemistry, Fuzhou UniversityCollege of Physical Science and Technology, Yangzhou UniversityCollege of Chemistry and Chemical Engineering, State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of TechnologyShanghai Institute of Applied Physics, Chinese Academy of SciencesInstitute of Molecular Engineering Plus, College of Chemistry, Fuzhou UniversityNational Synchrotron Radiation Laboratory, University of Science and Technology of ChinaState Key Laboratory of Mesoscience and Engineering, Institute of Process Engineering, Chinese Academy of SciencesState Key Laboratory of Heavy Oil Processing, China University of PetroleumChemistry Division, Brookhaven National LaboratoryKey Laboratory of Luminescence and Optical Information, Ministry of Education, School of Physical Science and Engineering, Beijing Jiaotong UniversityAbstract Oxidative dehydrogenation of propane (ODHP) is a promising route for propylene production, but achieving high selectivity towards propylene while minimizing COx byproducts remains a significant challenge for conventional metal oxide catalysts. Here we propose a solution to this challenge by employing atomically dispersed dual-atom catalysts (M1M'1-TiO2 DACs). Ni1Fe1-TiO2 DACs exhibit an ultralow COx selectivity of 5.2% at a high propane conversion of 46.1% and 520 °C, with stable performance for over 1000 hours. Mechanistic investigations reveal that these catalysts operate via a cooperative Langmuir-Hinshelwood mechanism, distinct from the Mars-van Krevelen mechanism typical of metal oxides. This cooperative pathway facilitates efficient conversion of propane and oxygen into propylene at the dual-atom interface. The superior selectivity arises from facile olefin desorption from the dual-atom sites and suppressed formation of electrophilic oxygen species, which are preferentially adsorbed on Fe1 sites rather than oxygen vacancies. This work highlights the potential of dual-atom catalysts for highly selective ODHP and provides insights into their unique catalytic mechanism.https://doi.org/10.1038/s41467-025-59376-z |
| spellingShingle | Yongbin Yao Jingnan Wang Fei Lu Wenlin Li Bingbao Mei Lifeng Zhang Wensheng Yan Fangli Yuan Guiyuan Jiang Sanjaya D. Senanayake Xi Wang Suppressing COx in oxidative dehydrogenation of propane with dual-atom catalysts Nature Communications |
| title | Suppressing COx in oxidative dehydrogenation of propane with dual-atom catalysts |
| title_full | Suppressing COx in oxidative dehydrogenation of propane with dual-atom catalysts |
| title_fullStr | Suppressing COx in oxidative dehydrogenation of propane with dual-atom catalysts |
| title_full_unstemmed | Suppressing COx in oxidative dehydrogenation of propane with dual-atom catalysts |
| title_short | Suppressing COx in oxidative dehydrogenation of propane with dual-atom catalysts |
| title_sort | suppressing cox in oxidative dehydrogenation of propane with dual atom catalysts |
| url | https://doi.org/10.1038/s41467-025-59376-z |
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