▎ 摘　　要

NOVELTY - Synthesizing nickel-gold (NiAu) bimetallic alloy nano catalyst involves dissolving nickel precursor salt and gold precursor salt in deionized water at same time, and adjusting pH value to 10-12; adding carrier, fully mixing and stirring for 1-5 hours; collecting solid component; transferring mixture into blast drying oven at temperature of 30-100degrees Celsius for drying for 1-24 hours; roasting obtained dry solid at 100-300degrees Celsius for 4-8 hours; and roasting for 1-10 hours at 300-800degrees Celsius in reducing atmosphere to obtain NiAu bimetallic alloy nano catalyst. USE - Method for synthesizing NiAu bimetallic alloy nanocatalyst used for catalyzing reduction of carbon-dioxide (CO2) to carbon monoxide (CO) through reverse water gas shift reaction, followed by taking CO2 and hydrogen (H2) as reaction raw material, and reacting at 300-600degrees Celsius (all claimed). ADVANTAGE - The method for synthesizing NiAu bimetallic alloy nanocatalyst enables to exhibit excellent catalytic activity and has air speed of 180000 ml gcat-1hour-1, operates for 40 hours without obvious inactivation under condition of 400degrees Celsius. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a NiAu bimetallic alloy nanocatalyst, which is prepared by above method. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of low-power Transmission Electron Microscope (TEM) photograph of catalyst, which has uniform metal particle distribution and good dispersibility.