▎ 摘　　要

NOVELTY - Preparing load type single-atom noble metal catalyst comprises (1) preparing transition metal oxide nanoclusters-graphene composite materials; (2) preparing of monoatomic precious metal sol; and (3) loading the monoatomic noble metal sol obtained in step (2) on the transition metal oxide nanoclusters-graphene composite material to obtain load type monoatomic noble metal catalyst. USE - The catalyst is useful in selective hydrogenation reaction of quinoline compounds (claimed). ADVANTAGE - The method: is economical, and simple; and has mild conditions, good repeatability and easy mass production. The catalyst: has monoatomic noble metals uniformly dispersed on the transition metal oxide nanocluster graphene composite material; and has high activity, high selectivity and high stability. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) load type single-atom noble metal catalyst is prepared by above mentioned method; and (2) use of load type single-atom noble metal catalyst in selective hydrogenation reaction of quinoline compounds, comprising adding quinoline compound and monoatomic noble metal catalyst into the solvent, stirring at 25-120 degrees C, 0.5-2 MPa hydrogen for 1-12 hours, the molar ratio of the catalyst to the quinoline compound is (0.01-0.05):1.