Preparation method of Pt-Ag-Co/C catalyst
A catalyst and chemical technology, applied in the field of catalyst manufacturing, can solve the problems of high cost of platinum catalyst, and achieve the effects of easy expansion of production, simple preparation process and excellent durability
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Embodiment 1
[0034] (1) Activated carbon is used as a carrier for activation treatment:
[0035] Weigh a certain amount of carbon powder and heat it in a tube furnace at 700°C for 80 minutes under an inert atmosphere
[0036] (2) Disperse the treated carbon powder with ethylene glycol, ultrasonically form a uniform slurry, add silver and cobalt precursor solutions to it, reduce it with sodium borohydride at room temperature for 48 hours, filter, wash, and dry for later use, and record it as Ag -Co / C
[0037] (3) Dissolve Ag-Co / C with ethylene glycol and ultrasonically form a uniform slurry
[0038] (4) Using the in-situ chemical reduction homogeneous deposition method, the platinum precursor and NaHSO 3 role, generate complex ions, and then use H 2 o 2 Oxidation to produce a metastable colloid, control the pH of the solution during the reaction = 6
[0039] (5) Add to the homogeneous slurry of Ag-Co / C, reduce with reducing agent formaldehyde, stir at 60°C for 1.5h
[0040] (6) After ...
Embodiment 2
[0043] (1) Carbon nanotubes are used as carriers for activation treatment:
[0044] Weigh a certain amount of carbon nanotubes, soak them in concentrated nitric acid for 12 hours, wash them with deionized water, and dry them at 80°C
[0045] (2) Disperse the treated carbon nanotubes with glycerol, form a uniform slurry by ultrasonication, add the silver and cobalt precursor solution to it, reduce it with sodium borohydride at room temperature for 10 h, filter, wash, and dry for later use. Ag-Co / C
[0046] (3) Disperse Ag-Co / C with glycerol and form a homogeneous slurry by ultrasonic
[0047] (4) Using the in-situ chemical reduction homogeneous deposition method, the platinum precursor and NaHSO 3 role, generate complex ions, and then use H 2 o 2 Oxidation to produce a metastable colloid, control the pH of the solution during the reaction = 8
[0048] (5) Add to the homogeneous slurry of Ag-Co / C, reduce with reducing agent sodium borohydride, stir at 40°C for 1.5h
[0049...
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