▎ 摘　　要

NOVELTY - A bimetallic catalyst comprises graphene particles as a carrier, and active metal components which are platinum and silver. The mass percentage of platinum is 0.3-4.5% of the carrier, and the mass percentage of silver is 0.8-8.2% of the carrier. USE - Bimetallic catalyst (claimed). ADVANTAGE - The bimetallic catalyst has excellent stability, uniform dispersion, high content of active component and excellent catalytic activity. The bimetallic catalyst is prepared by a simple method at low cost while shortening the preparation time. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of bimetallic catalyst, which involves (i) pickling the graphene with inorganic acid in a mass fraction of 20-70% for 0.4-1.2 hours, and then washing with water to neutral, drying at 60-120 degrees C for 4-12 hours to obtain graphene carrier, (ii) preparing an impregnating liquid containing an active metal component, (iii) spraying or impregnating the impregnating liquid containing the active metal component on the graphene support, and supporting the active metal component on the graphene support to obtain a catalyst precursor, (iv) aging the catalyst precursor for 2-10 hours, then carrying out reduction treatment with a reducing agent, washing to neutral, and drying to obtain a catalyst product.