LIQUID PHASE CO2 METHANATION CATALYST, PREPARATION METHOD AND USE THEREOF

摘要

A liquid phase CO2 methanation catalyst comprises amphipathic ionic liquid and metal active components dispersed in the amphipathic ionic liquid. The metal active components are in the state of stable colloid in the amphipathic ionic liquid, particle size is 0.5 to 20nm, and are in the shape of spherical. The metal active components include a first metal active component and a second metal active component. The first metal active component is nickel, the second metal active component is one or more of lanthanum, cerium, molybdenum, ruthenium, ytterbium, rhodium, palladium, platinum, potassium and magnesium, and the molar ratio of the first metal active component to the second metal active component is 10:0.1-2. Also provided are a preparation method of the liquid phase CO2 methanation catalyst and a use for CO2 methanation thereof.