Impact of varied zeolite materials on nickel catalysts in CO2 methanation
Article
Yan, Penghui, Peng, Hong, Wu, Xuankun, Rabiee, Hesamoddin, Weng, Yilun, Konarova, Muxina, Vogrin, John, Rozhkovskaya, Alexandra and Zhu, Zhonghua. 2024. "Impact of varied zeolite materials on nickel catalysts in CO2 methanation." Journal of Catalysis. 432. https://doi.org/10.1016/j.jcat.2024.115439
Article Title | Impact of varied zeolite materials on nickel catalysts in CO2 methanation |
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ERA Journal ID | 1451 |
Article Category | Article |
Authors | Yan, Penghui, Peng, Hong, Wu, Xuankun, Rabiee, Hesamoddin, Weng, Yilun, Konarova, Muxina, Vogrin, John, Rozhkovskaya, Alexandra and Zhu, Zhonghua |
Journal Title | Journal of Catalysis |
Journal Citation | 432 |
Article Number | 115439 |
Number of Pages | 11 |
Year | 2024 |
Publisher | Elsevier |
Place of Publication | United States |
ISSN | 0021-9517 |
1090-2694 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.jcat.2024.115439 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S0021951724001520 |
Abstract | Ni catalysts supported on 4A, 5A, 13X, ZSM-5, and BEA zeolites were prepared using the vacuum-heating method for CO2 methanation. These support materials play a pivotal role in shaping the catalysts' properties and their catalytic performance. High-resolution high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) and energy-dispersive X-ray spectroscopy (EDS) mappings suggest a significant concentration of Ni nanoparticles situated on the external surfaces of catalysts with low Si/Al ratios zeolites (Ni-4A, Ni-5A, and Ni-13X). These Ni nanoparticles exhibit characteristics of weaker metal-support interaction, lower metal reduction temperatures, and moderate H2 adsorption activity. Moreover, these low Si/Al ratio zeolites demonstrate robust CO2 adsorption activity. These properties endow Ni-5A and Ni-13X catalysts with heightened CO2 conversion (70.4–70.9%) and methane selectivity (92.4–96.4%). In contrast, high Si/Al ratio zeolite-based catalysts (Ni-ZSM-5 and Ni-BEA) exhibit smaller Ni particles, strong metal-support interaction and weaker CO2 adsorption activity, resulting in reduced CO2 methanation activity and decreased methane selectivity (71.2–73.4%). The normalized CO2 conversion rate presents a correlation with the average Ni particle size. |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 340601. Catalysis and mechanisms of reactions |
Byline Affiliations | University of Queensland |
Centre for Future Materials | |
Zeotech, Australia |
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