▎ 摘　　要

NOVELTY - The preparation method of graphene oxide loaded palladium copper nanocapsules catalyst involves dripping palladium chloride glycol solution to the graphene oxide ethylene glycol slurry prepared by Hummers method, stirring the mixture at 29 degrees C for 40 minutes, adding aqueous copper sulfate solution and sodium glutamate, dripping certain concentration of potassium hydroxide glycol solution, adjusting pH value to 10-13, stirring at 25-30 degrees C for a certain time, adding water into a hydrothermal kettle, hydrothermally reacting at 180 degrees C for 8-16 hours, washing using ethanol, and drying. USE - Preparation method of graphene oxide loaded palladium copper nanocapsules catalyst for preparing biphenyl (claimed). ADVANTAGE - The method enables preparation of graphene oxide loaded palladium copper nanocapsules catalyst with excellent catalytic effect, more than 90% halogenated hydrocarbon compound conversion rate, and 95% biphenyl compound selectivity, reduces the use amount of the palladium, and reduces the poisoning of palladium. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation method of biphenyl using graphene oxide loaded palladium copper nanocapsules catalyst, which involves placing halogenated hydrocarbon compound, benzene borate, potassium carbonate, and graphene oxide loaded palladium copper nanocapsules catalyst into a reaction device, where the molar ratio of halogenated hydrocarbon compound, benzene borate and potassium carbonate is 1:(1-3):(1-6), the mass ratio of halogenated hydrocarbon compound and graphene oxide loaded palladium copper nanocapsules is (20-200):1, the volume ratio of water and ethanol is 1:1, adding solvent into the reaction device, where the volume of solvent with respect to halogenated hydrocarbon compound is 1-30 ml/1 mmol, and heating at 60-100 degrees C for 4-24 hours.