▎ 摘　　要

NOVELTY - Three-dimensional graphene assembly catalyst preparation involves mixing pyridine, polystyrene beads and graphene oxide in a mass ratio of 0.5-20:0.1-4:1, and then arranging the mixture into an aqueous solution. The graphene oxide has a concentration of 1-4 mg/ml. The aqueous solution is hydrothermally reacted at 95-180 degrees C for 12-48 hours to obtain a graphene assembly containing polystyrene beads. The pore structure of the graphene assembly is regulated by polystyrene beads. USE - Method for preparing three-dimensional graphene assembly catalyst for carrying out liquid-phase hydrogenation reaction (claimed). ADVANTAGE - The method prepares the three-dimensional graphene assembly catalyst in a simple, cost-effective and eco-friendly manner with stable and controllable structure, easy recovery and good catalytic behavior. DETAILED DESCRIPTION - Three-dimensional graphene assembly catalyst preparation involves mixing pyridine, polystyrene beads and graphene oxide in a mass ratio of 0.5-20:0.1-4:1, and then arranging the mixture into an aqueous solution. The graphene oxide has a concentration of 1-4 mg/ml. The aqueous solution is hydrothermally reacted at 95-180 degrees C for 12-48 hours to obtain a graphene assembly containing polystyrene beads. The pore structure of the graphene assembly is regulated by polystyrene beads. The graphene assembly containing the polystyrene beads is treated for more than 1 hour at 500-900 degrees C to remove the polystyrene beads. The obtained graphene assembly is impregnated into the solution containing the precious metal precursor under hydrogen atmosphere at 100-400 degrees C for 2 hours to get the three-dimensional structure of graphene assembly catalyst. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic scanning electron microscopic image of the prepared three-dimensional graphene assembly catalyst.