▎ 摘　　要

NOVELTY - Composite carrier bimetallic ester hydrogenation catalyst comprises 30-90 wt.% silicon dioxide, 5-20 wt.% graphene oxide, 5-50 wt.% copper oxide, and 0-20 wt.% nickel, zinc or silver. USE - The composite-supported bimetallic ester hydrogenation catalyst is useful preparing 1, 3-propylene glycol by hydrogenation of fixed bed malonate alkyl ester (claimed). ADVANTAGE - The catalyst has high conversion rate and yield, less side reactions, and high quality of the reaction liquid, which meets the quality requirements of industrial polyester fibers and high commercial value. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing composite carrier bimetallic ester hydrogenation catalyst comprising (S1) preparing graphite oxide by Hummer's method, dispersing the obtained graphite oxide in deionized water, configuring a 1% suspension, obtaining graphene oxide by ultrasonic exfoliation method, and then dispersing graphene oxide in deionized water to obtain a graphene oxide carrier, (S2) adding copper element salts, silicon carrier precursor and precipitant respectively to deionized water according to the molar ratio of copper and silicon elements of 1-10 and the molar ratio of copper to precipitant of 1.5-12, stirring and dissolving to obtain a copper-silicon solution, and (S3) providing graphene oxide carrier, adding a dispersant to disperse to obtain solution A, adding solution A to the copper-silicon solution, stirring for 1 hours, heating up to 50-98degrees Celsius, and performing co-precipitation reaction for 6-24 hours, filtering the reaction solution with suction, washing the conductivity of the filter cake to 100-3000 micros/cm, and baking in an oven at 60-200degrees Celsius for 8-24 hours, crushing the dried precipitate and sieving into particles of a certain mesh number, slicing, forming, and calcining at 250-650degrees Celsius for 6-24 hours to obtain a composite carrier bimetallic ester hydrogenation catalyst precursor.