▎ 摘　　要

NOVELTY - Preparing platinum/graphene-perovskite-foam nickel catalyst comprises e.g. (i) preparing oxidized graphite aqueous solution by using the hummer method, (ii) taking aqueous solution of graphene oxide, adding lanthanum nitrate hexahydrate and magnetically stirring, (iii) adding brown-red liquid into a strong alkali corrosion hydrothermal reactor and sealing (vi) cooling, (v) vacuum filtering, ultrasonically washing and drying, (vi) mixing conductive graphite, binder, graphene-perovskite powder and drying to obtain flaky graphene-perovskite-foam nickel electrode, and (vii) uniformly depositing. USE - The catalyst is useful for preferentially oxidize carbon monoxide in hydrogen-rich gas, carbon monoxide oxidation, ethanol steam reforming hydrogen synthesis reaction or synthesis gas preparation of low-carbon alcohol catalytic reaction (claimed). DETAILED DESCRIPTION - Preparing platinum/graphene-perovskite-foam nickel catalyst comprises (i) preparing oxidized graphite aqueous solution by using the hummer method to obtain brownish yellow graphite oxide solution of 0.5-2 mg/ml, (ii) taking above-mentioned aqueous solution of graphene oxide as solvent, adding lanthanum nitrate hexahydrate, sodium hydroxide and sodium carbonate, magnetically stirring at 10-15 degrees C for 1 hour to obtain brown red suspension, (iii) adding above-mentioned brown-red liquid into a special high temperature, high pressure, strong alkali corrosion hydrothermal reactor, sealing,introducing inert gas into the reaction kettle for emptying the air in the reaction kettle, opening the reaction kettle stirring device, stirring at room temperature for 30 minutes, closing the valve of the inert gas, completely sealing the hydrothermal reaction kettle, heating sleeve is set around the hydro-thermal reaction kettle and setting the temperature programming, (vi) when the temperature reaches at 260-320 degrees C for 12-48 hours, removing the heating sleeve, slowly cooling to the room temperature, opening the hydro-thermal reaction kettle to obtain grayish black solution, (v) filtering the cinereous solution, vacuum filtering, ultrasonically washing the obtained black precipitate, drying at 40 degrees C to obtain clean cinereous graphene-perovskite powder, (vi) mixing the conductive graphite, binder and graphene- perovskite powder, under the pressure of 3 Mpa, pressing on the foam nickel, drying at 40 degrees C to obtain flaky graphene-perovskite-foam nickel electrode, (vii) using obtained electrode as the working electrode, taking platinum-based material for the electrode, chloroplatinic acid hexahydrate or diammine dinitritoplatinum(II) as the electrolyte with the mass of 1-7%, current density is 1-2A/dm3, time for 1-2 hours, temperature at 25-30 degrees C, uniformly depositing the platinum-sodium particles on the flaky graphene-perovskite -foam nickel electrode to obtain platinum/graphene-perovskite-foam nickel catalyst.