▎ 摘　　要

NOVELTY - Preparing a highly dispersed copper-silver alloy catalyst involves dispersing the carrier into an organic solvent, stirring and mixing, adding a dispersant, and stirring for 2 hours to obtain a carrier mixture for subsequent use. The copper salt whose copper content accounts for 5-30 wt.% of the catalyst mass is weighed, added into the above-mentioned carrier mixed solution, and stirred and dispersed, then weighed the silver salt whose silver content accounts for 0.1-2 wt.% of the catalyst, added into the carrier mixture, stirred and dispersed completely to obtain the reaction material, and transferred the reaction material to the glove box for use. The methyl formate is added to the organic solvent, and ultrasonic dispersion is performed to obtain a reducing agent (A) for reducing the silver ion of the active component. The glycolaldehyde solution for reducing the active component copper ion is also configured as reducing agent (B). USE - Method for preparing a highly dispersed copper-silver alloy catalyst used to catalyze the hydrogenation of oxalate to produce ethylene glycol (claimed). ADVANTAGE - The catalyst is synthesized under the inert environment of the organic phase at room temperature, and the active metal components are highly dispersed, and used for dimethyl oxalate hydrogenation conversion rate of 100%, EG selectivity of 97%, stable catalyst strength before and after long-term use, small change in shrinkage rate, and has a good industrial application prospect. DETAILED DESCRIPTION - Preparing a highly dispersed copper-silver alloy catalyst involves dispersing the carrier into an organic solvent, stirring and mixing, adding a dispersant, and stirring for 2 hours to obtain a carrier mixture for subsequent use. The copper salt whose copper content accounts for 5-30 wt.% of the catalyst mass is weighed, added into the above-mentioned carrier mixed solution, and stirred and dispersed, then weighed the silver salt whose silver content accounts for 0.1-2 wt.% of the catalyst, added into the carrier mixture, stirred and dispersed completely to obtain the reaction material, and transferred the reaction material to the glove box for use. The methyl formate is added to the organic solvent, and ultrasonic dispersion is performed to obtain a reducing agent (A) for reducing the silver ion of the active component. The glycolaldehyde solution for reducing the active component copper ion is also configured as reducing agent (B), and the reducing agents (A), (B) and the peristaltic pump are put into the glove box respectively, under normal temperature conditions, in the argon atmosphere environment in the gloves, turn on the peristaltic pump. The reducing agent (A) is pumped into the reaction material at a flow rate of 0.1-10 ml/minute for reaction, after the addition is completed, the reaction is continued for 2-8 hours, and obtained pre-reactant is obtained. The reducing agent (B) is pumped into the pre-reactant at a flow rate of 0.1-10 ml/minute, after the addition is completed, the reaction is continued for 3-5 hours to obtain a complete reaction slurry material. The complete slurry is transferred to the glove box drying box replaced by argon, the vacuum is turned on, heated and dried, and the glove box is ground and tableted, then transferred to a barrel furnace and calcined to obtain a highly dispersed copper-silver alloy catalyst.