Modulating the CO2 methanation over inverse ZrO2/Ni catalysts promoted with Y, La, Sr, and Pr
Year: 2025
Type: article
Abstract: CO 2 methanation reaction is a promising approach for both CO 2 utilization and hydrogen storage, leveraging hydrogen produced from renewable energy sources to mitigate the energy crisis. Inverse ZrO₂/Ni catalysts promoted with Y, La, Sr, and Pr were synthesized and evaluated for CO₂ methanation. The impact of these promoters on the structure, properties, and catalytic performance of inverse ZrO₂/Ni catalyst was systematically investigated. A comprehensive suite of characterization techniques, including XRD, BET, H₂-TPR, CO₂-TPD, TEM, HRTEM, EDX-Mapping, and quasi in-situ XPS, was employed to elucidate the relationship between the physicochemical properties of the catalysts and their CO₂ methanation catalytic performance. 5Y65Zr/30Ni catalyst exhibited superior methanation activity compared with other catalysts, which was correlated with its enhanced specific surface area, a high concentration of medium basic sites facilitating CO₂ adsorption and activation, a high surface oxygen ratio, and optimal Ni dispersion achieved through minimized Ni crystallite size. These findings demonstrated that the strategic incorporation of promoters allowed for precise tailoring of inverse ZrO₂/Ni catalyst properties, providing valuable insights for the rational design of highly efficient CO₂ methanation catalysts. • Y, La, Sr, Pr promoted inverse ZrO₂/Ni catalysts for CO₂ methanation • Y increased CO 2 methanation activity of ZrO 2 /Ni catalyst • Y increased Ni dispersion, oxygen vacancy concentration, surface basicity of ZrO 2 /Ni catalyst • The synergistic effect of physicochemical properties optimized the catalytic performance
Source: Applied Catalysis A General
Authors: Li Li, Jing Yang, Xueshuang Wu, Patrick Da Costa, Changwei Hu
Language: English
Subfield: Catalysis
Field: Chemical Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,760
Funders: National Natural Science Foundation of China, China Scholarship Council, Sorbonne Université, Chinese Government Scholarship, Fundamental Research Funds for the Central Universities, Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health (111 Center)
Awards: G7593165059, G850569949
OpenAlex ID: W4415117602