▎ 摘　　要

NOVELTY - A graphene-doped catalyst comprises copper, zinc, aluminum, and graphene. The graphene is a nitrogen-doped graphene which is 0-15% of the total mass of the catalyst. The copper, zinc, and aluminum elements are derived from copper nitrate, zinc nitrate, and aluminum nitrate. The catalyst is prepared by (i) mixing copper nitrate, zinc nitrate, and aluminum nitrate, (ii) preparing a sodium carbonate solution (B), (iii) configuring nitrogen-doped graphene solution (C), (iv) mixing solution (A) and solution (B), stirring, co-precipitating with nitrogen-doped graphene solution (C). USE - Graphene-doped catalyst for hydrogenation of carbon dioxide into methanol (claimed). ADVANTAGE - The graphene-doped catalyst has excellent physical and chemical properties, gas adsorption performance, metal particles dispersion ability, and catalytic activity, high carbon dioxide conversion rate, methanol selectivity, and methanol yield. DETAILED DESCRIPTION - A graphene-doped catalyst comprises copper, zinc, aluminum, and graphene. The graphene is a nitrogen-doped graphene which is 0-15% of the total mass of the catalyst. The copper, zinc, and aluminum elements are derived from copper nitrate, zinc nitrate, and aluminum nitrate. The catalyst is prepared by (i) mixing copper nitrate, zinc nitrate, and aluminum nitrate according to copper, zinc oxide, and alumina ratio of 4:3:1-3 to obtain mixed solution (A), (ii) preparing a sodium carbonate solution (B) having a concentration of 1 mol/l, (iii) configuring nitrogen-doped graphene solution (C), (iv) mixing solution (A) and solution (B), stirring at greater than or equal to 500 rpm for 2-5 hours, co-precipitating with nitrogen-doped graphene solution (C) at 70 degrees C, maintaining pH at 7, (v) aging the precipitate for overnight, centrifuging, vacuum washing at 60 degrees C, and (vi) calcining in a tube furnace in a nitrogen protection atmosphere at 350 degrees C for 4-10 hours.