A fundamental study of CO2 capture and CH4 production in a rapid cyclic system using nickel-lithium-silicate as a catal-sorbent

•Nickel-lithium-silicate (Ni/LS) was developed for sustainable CH4 production.•The Ni/LS captured CO2 from the simulated flue gas (10% CO2 and 10% H2O).•Decarbonation rate of Ni/LS was significantly improved, according to the Le Chatelier’s principle.•The Ni/LS exhibited excellent multicycle stability in a cyclic system.