▎ 摘　　要

NOVELTY - Preparing graphene doped copper catalyst comprises (i) dissolving copper nitrate in water, heating and dropping ammonia water, precipitating, stirring, adding sodium hydroxide solution, pumping, filtering and washing, (ii) dispersing copper-doped graphene solution, ultrasonicating for 2 hours, adding hydrazine hydrate, stirring and heating for 2 hours at 90 degrees C under water bath condition, filtering, washing with de-ionized water and drying. USE - The method is useful for synthesizing dimethyl carbonate catalyst. ADVANTAGE - The raw material is accessible. The catalyst has high activity and high stability. DETAILED DESCRIPTION - Preparing graphene doped copper catalyst comprises (i) dissolving copper nitrate in water, heating and dropping ammonia water, precipitating, stirring, adding sodium hydroxide solution, pumping, filtering and washing until the surface is without nitrate ions to obtain the copper hydroxide solid, drying, dissolving the glycine in water, heating at 65 degrees C, adding cupric hydroxide, continuously stirring in water bath, heating for 15 minutes, filtering when it is hot, adding water of 80 degrees C, crystallizing flaky crystals, precipitating glycine copper, (ii) dispersing copper-doped graphene solution, ultrasonicating for 2 hours, adding hydrazine hydrate, stirring and heating for 2 hours at 90 degrees C under water bath condition, filtering, washing with de-ionized water, drying to obtain the graphene powder, glycine copper into the aqueous solution, performing ultrasonic treatment for 2 hours, filtering, drying the mixture in nitrogen atmosphere at 230 degrees C for 2 hours.