▎ 摘　　要

NOVELTY - Preparation of 4,4'-diaminodiphenylmethane (I) by graphene catalysis involves adding formaldehyde or paraformaldehyde into aniline solution (II), and adding water and graphene catalyst to catalyze the synthesis of 4,4'-diaminodiphenylmethane. USE - Preparation of 4,4'-diaminodiphenylmethane. ADVANTAGE - The method is environmentally-friendly and satisfies the requirements of modern green industrial production, does not use organic strong acid and inorganic strong acid, thus preventing corrosion and difficult recovery, ensures effective recovery and utilization of the catalyst, and improves the reaction yield. DETAILED DESCRIPTION - Preparation of 4,4'-diaminodiphenylmethane of formula (I) by graphene catalysis involves adding formaldehyde or paraformaldehyde of formula: (CH2O)ninto aniline solution of formula (II), and adding water and graphene catalyst to catalyze the synthesis of 4,4'-diaminodiphenylmethane.