▎ 摘　　要

NOVELTY - Preparation of macroporous silicon carbide/graphene mixed carrier-loaded palladium catalyst comprises providing carrier having high specific surface area of 100-200 m2/g and aperture of 100 nm-100 mu m, and noble metal palladium as active component at 0.2-5%. USE - Preparation of macroporous silicon carbide/graphene mixed carrier-loaded palladium catalyst used for catalyzing the reaction of methyl nitrite and carbon monoxide to generate dimethyl oxalate (claimed).