▎ 摘　　要

NOVELTY - A composite graphene catalyst comprises graphene and perovskite catalyst in which amount of graphene is 0.5-10 mass% of amount of pervoskite catalyst. USE - A composite graphene catalyst for methane production (claimed). ADVANTAGE - Catalyst has improved catalytic activity and increased specific surface area. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of composite graphene catalyst which involves adding graphene oxide to aqueous alcohol solution, stirring, adding perovskite catalyst to obtain mixed solution in which volume ratio of water and alcohol is 1:1, 12-25 ml aqueous alcohol solution is added per g of perovskite catalyst, and amount of graphene oxide is 0.5-10 mass% of amount of perovskite catalyst, magnetically stirring, refluxing at 100 degrees C for 2 hours, adding reducing agent in which weight ratio of graphene oxide and reducing agent is 1:3-5, stirring for 6 hours, vacuum filtering, drying, and grinding. DESCRIPTION OF DRAWING(S) - The drawing shows a curve of composite graphene catalyst catalytic activity. (Drawing includes non-English language text).