▎ 摘　　要

NOVELTY - Loading graphene oxide bismuth-palladium (Bi-Pd) composite catalyst by delta-manganese dioxide (delta-MnO2), comprises (i) adding 50 ml 0.38 mol/l potassium permanganate (KMnO4) solution into 20 ml 1.4 mol/l glucose solution, drying at 110degreesC for 24 hours to obtain a brown dry gel, and calcining the dry gel at 400degreesC for 2 hours to obtain gray-black delta-MnO2, rinsing with water and drying at 110degreesC to obtain pure delta-MnO2, (ii) dispersing 0.005-0.045 g monolayer graphene oxide powder in 50-100 ml deionized water, and ultrasonically processing for 6 hours to obtain monolayer graphene oxide suspension solution, injecting 2 g/l sodium borohydride (NaBH4) solution, adding 1-3 g of delta-MnO2 to the above 50-200 ml Bi-Pd/GO suspension, and continue to stirring for 6 hours, washing the sample twice with deionized water and absolute ethanol, and drying in an oven at 80-120degreesC for 12-24 hours, calcining sample in a muffle furnace at 350-450degreesC for 2-4 hours. USE - The method is useful for loading graphene oxide bismuth-palladium (Bi-Pd) composite catalyst by delta-manganese dioxide. ADVANTAGE - The catalyst has high stabilityat the same time, enhances the electron migration efficiency between Bi-Pd-Mn, enhances the catalyticefficiency, reduces the conversion temperature. The method is simple , low cost and good stability. DETAILED DESCRIPTION - Loading graphene oxide bismuth-palladium (Bi-Pd) composite catalyst by delta-manganese dioxide (delta-MnO2), comprises (i) adding 50 ml 0.38 mol/l potassium permanganate (KMnO4) solution into 20 ml 1.4 mol/l glucose solution, stirring for 30 seconds to obtain brown gel, draining the water generated during the gel synthesis process for every 20 minutes, drying at 110degreesC for 24 hours to obtain a brown dry gel, and calcining the dry gel at 400degreesC for 2 hours to obtain gray-black delta-MnO2, rinsing with water and drying at 110degreesC to obtain pure delta-MnO2, (ii) dispersing 0.005-0.045 g monolayer graphene oxide powder in 50-100 ml deionized water, and ultrasonically processing for 6 hours to obtain monolayer graphene oxide suspension solution, adding 1.32-3.96 ml palladium nitrate dihydrate (Pd(NO3)22H2O) solution, 0.0037 mol/l and 0.09-0.9 ml bismuth chloride (biCl3) solution 0.0158 mol/l into 50-100 ml deionized water to form a uniform Pd and Bi mixed solution, adding 5-22.5 mg polyvinyl alcohol and 50-100 ml graphene oxide (GO) suspension solution to the above Pd and Bi mixed solution under ice-water bath conditions and stirring for 30 minutes, injecting 2 g/l sodium borohydride (NaBH4) solution, stirring for 1 hour to form a dark brown Bi-Pd/GO suspension, adding 1-3 g of delta-MnO2 to the above 50-200 ml Bi-Pd/GO suspension, and continue to stirring for 6 hours, washing the sample twice with deionized water and absolute ethanol, and drying in an oven at 80-120degreesC for 12-24 hours, calcining the obtained sample in a muffle furnace at 350-450degreesC for 2-4 hours, and the heating rate is 3-5degreesC/minute.