▎ 摘　　要

NOVELTY - Preparation of bifunctional graphene oxide catalyst, involves adding graphene oxide to a sulfonating agent solution, vigorously stirring and refluxing the mixed solution at 70 degrees C under nitrogen, centrifuging and washing the obtained suspension, freeze-drying to obtain a monofunctional graphene oxide, adding the monofunctional graphene oxide to 1-3 mg/mL ethylene glycol, ultrasonically vibrating, adding a noble metal chloride, adjusting the pH to 13, heating to 120 degrees C, mixing with ethylene glycol solution of reducing agent, refluxing the obtained solution at 120 degrees C, cooling to room temperature, dripping deionized water in the solution, adjusting the pH to 13, filtering, washing with water, and vacuum-drying. The reducing agent is sodium borohydride, potassium borohydride, hydrazine hydrate, and/or polyamine. The mass ratio of reducing agent and noble metal chloride is 3-8%. USE - Preparation of bifunctional graphene oxide catalyst used in etherification oxidation, transesterification hydrogenation, dehydration hydrogenation, and preparation of dimethyl acyl furan from fructose (all claimed). ADVANTAGE - The method enables simple preparation of bifunctional graphene oxide catalyst with double catalytic activity center (acid active center and noble metal active center), which provides proper acidity and high efficiency redox site, and improves the reaction catalytic activity and product selectivity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for use of the catalyst in preparation of dimethyl acyl furan from fructose, by reacting at 120-200 degrees C for 3-8 hours.