Reveal and correlate working geometry and surface chemistry of Ni nanocatalysts in CO2 reforming of methane
The commercialization of Ni-based catalysts in CO2 dry reforming of methane (DRM) suffers from their quick deactivation. Here, we reveal each reaction pathway for DRM based on the Ni catalyst composition and geometry under working conditions, through one working platform combining in situ high resolution Cs corrected environmental transmission electron microscopy and electron energy-loss spectroscopy coupled with mass spectroscopy. The formation of Ni3C has been found to inhibit the decomposition of CO2 and CH4, and to promote the formation of onion-like carbon to encapsulate the Ni catalysts, leading to the deactivation of the Ni-based catalysts. Designing the suitable supports or promoters to keep the Ni surface structure under Ni-NiO cycle can drive the simultaneously amorphous carbon deposition-consumption cycle and minimise the coke formation. This research is not only for developing coke resistance Ni catalysts in the DRM, but also significant for investigating many catalysis challenges both in research and engineering.
Authors
- Jun Huang (ORCID: https://orcid.org/0000-0001-8704-605X)
- Ping Wu
- An‐Ping Li (ORCID: https://orcid.org/0000-0003-4400-7493)
- Wei Li (ORCID: https://orcid.org/0000-0001-6496-6160)
- Xiaozhou Liao (ORCID: https://orcid.org/0000-0001-8565-1758)
- Yijiao Jiang (ORCID: https://orcid.org/0000-0002-6191-9825)
- Zichun Wang (ORCID: https://orcid.org/0000-0002-4280-2787)
- Qian Lv
- Catherine Stampfl (ORCID: https://orcid.org/0000-0003-4407-1778)
- Xiaodong Han (ORCID: https://orcid.org/0000-0002-0193-1291)
- Lizhuo Wang (ORCID: https://orcid.org/0000-0002-3370-5037)
Institutions
- The University of Sydney (AU)
- Southern University of Science and Technology (CN)
- Beijing University of Technology (CN)
- Beijing University of Chemical Technology (CN)
- Macquarie University (AU)
Publication Details
- Journal
- Materials Today
- Published
- 2024-08-10
- DOI
- https://doi.org/10.1016/j.mattod.2024.07.006
- Citations
- 19
- Primary Topic
- Catalytic Processes in Materials Science
- Type
- article
- Field-Weighted Citation Impact
- 2.23
Funders
- Beijing Outstanding Young Talents
- National Aerospace Science Foundation of China
- Support Program for Longyuan Youth and Fundamental Research Funds for the Universities of Gansu Province
- Australian Research Council
- National Key Clinical Specialty Discipline Construction Program of China