Single-coated multi-component catalyst and preparation method thereof

The invention discloses a single-coated multi-component catalyst and a preparation method thereof. The single-coated multi-component catalyst comprises a porous matrix and a mixed catalytic coating, wherein the mixed catalytic coating is applied on the surface of the porous matrix and composed of a catalytic active component and a bonding component which are blended at (1-3): (3-1) by weight percentage. The single-coated multi-component catalyst is simple in preparation and high in high-activity VOCs (volatile organic compounds) combustion catalyzing performance. The preparation method comprises taking ethylene glycol as dispersion reducing agent, in-situ applying one or more types of metal particles onto a La/Y/Pr-doped-and-modified CeZrOx powder through pulsed microwave assisted chemicalreduction; then mixing the coated powder with the prepared bonding component, single-coating the porous matrix with the mixture, and performing drying and baking processes to obtain the target single-coated multi-component c