▎ 摘　　要

NOVELTY - A solid catalyst is prepared using graphene oxide and halogenated alkyl amine as raw materials, and water as solvent, in which amino is grafted on surface of graphene oxide by covalent bond at room temperature to obtain efficient solid catalyst. The catalyst includes graphene oxide-halogenated alkyl amine composite (I). USE - Solid catalyst is used for hydrolyzing ethylene carbonate in synthesis of ethylene glycol. ADVANTAGE - The environmentally-friendly catalyst has excellent activity and durability, and can be prepared by easy, simple and economical process, and enables synthesis of ethylene glycol with ethylene carbonate conversion rate of more than 95%, and ethylene glycol selectivity of 100%. DETAILED DESCRIPTION - A solid catalyst is prepared using graphene oxide and halogenated alkyl amine as raw materials, and water as solvent, in which amino is grafted on surface of graphene oxide by covalent bond at room temperature to obtain efficient solid catalyst. The catalyst includes graphene oxide-halogenated alkyl amine composite of formula (I). A=graphene oxide;and y=2 or 3. An INDEPENDENT CLAIM is included for preparation of solid catalyst, which involves adding deionized water and graphene oxide in a mass ratio of 100:1-200: 1, to beaker, ultrasonically processing, adding halogenated alkyl ammine of formula: X-(CH2)y-NH2 (i), stirring, filtering, and washing with deionized water. The mass ratio of graphene oxide and halogenated alkyl ammine is 5:1-2:1. X=Cl or Br.