▎ 摘　　要

NOVELTY - Preparation of nitrogen-doped graphene-supported iron-based catalyst involves preparing nitrogen-doped graphene, mixing nitrogen-doped graphene in divalent iron solution, removing the solvent, drying to obtain divalent iron/nitrogen-doped graphene mixed material, and carrying out high temperature pyrolysis on the mixed material at 550-1200 degrees C, preferably 800 degrees C for 1-3 hours, preferably 2 hours under an inert atmosphere. USE - Preparation of nitrogen-doped graphene-supported iron-based catalyst used in catalytic hydrogenation of nitro aromatic compound e.g. nitrobenzene, nitrotoluene, dinitrobenzene, nitroanisole, nitro fluorobenzene, P-nitrochlorobenzene, p-nitroiodobenzene, 2-chloro-1-fluoro-4-nitrobenzene, 2,4,5-trifluoronitrobenzene, 3,4,5-trichloronitrobenzene, m-nitrobenzotrifluoride, nitrobenzene acetonitrile, 4-nitrophenyl phenyl ether, m-nitrobenzaldehyde or 2-chloro-3-nitropyridine for preparing arylamine compound (all claimed). ADVANTAGE - The prepared catalyst has excellent catalytic activity and selectivity.