Research progress and prospects of Nickel-based catalysts for carbon dioxide methanation
CHEN Yiming
Abstract：In the context of global climate change,carbon dioxide methanation,as a key pathway for Carbon Cap-ture and Utilization(CCU),plays a significant role in achieving carbon neutrality goals.Nickel(Ni)based cata-lysts have become the focus of research in this field due to their high activity,high methane selectivity,and cost ad-vantages.However,they face challenges such as insufficient low-temperature activity,deactivation at high tempera-tures,and carbon deposition.Therefore,it is necessary to systematically summarize the research progress of Ni-based catalysts in CO2 methanation.Accordingly,this paper reviews the research on the reaction mechanisms of CO2 methanation,and combined with research findings on catalyst structure and support properties,this paper focu-ses on analyzing strategies for active site modulation and support design.Extensive studies reveal that CO2 methanation primarily follows two pathways:the formate pathway and the CO dissociation pathway.Furthermore,the particle size,dispersion of Ni,and its interaction with the support significantly influence catalytic performance.Notably,in-troducing promoters such as noble metals,transition metals,and rare-earth elements can enhance catalytic activity through mechanisms including optimizing electronic structures,improving metal dispersion,and modulating basic sites.In terms of support engineering,oxides like cerium oxide(CeO2)and yttrium oxide(Y2O3)effectively enhance performance by regulating the strong metal-support interaction(SMSI)effect,interfacial electronic struc-ture,and oxygen vacancy density.Meanwhile,novel supports such as carbon nanotubes(CNTs),zeolites,and metal-organic framework(MOF)derivatives enhance Ni dispersion and sintering resistance through their unique structures.Specifically,designs like core-shell and embedded structures effectively inhibit Ni particle sintering and extend catalyst lifespan.In the future,it is necessary to combine in-situ characterization and theoretical calculations to deeply analyze the multi-path competition mechanism and structure-activity relationship.This will help develop precise and controllable synthesis methods to optimize the synergistic effects of promoters and sup-ports,thereby promoting Ni-based catalysts development towards high efficiency,stability,and low cost,and ulti-mately facilitating the industrial application of CO2methanation technology.
Keywords：CO2 methanationNickel-based catalystreaction mechanismactive siteformate pathwaysupport propertydispersion
Publication Date：2025-05-30
Pages：15( 19-32,52 )