A kind of ptni/c bimetallic catalyst and preparation method thereof
A bimetallic catalyst and catalyst technology, applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problems of limited application, expensive Pt, etc., and achieve reduction Production cost, efficiency improvement, high reactivity effect
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Embodiment 1
[0028] The preparation method of PtNi / C catalyst specifically comprises the steps:
[0029] (1) Weigh 50g of activated carbon to elute the dust in boiling deionized water for 2h, add 400mL of nitric acid solution with a mass fraction of 10% after centrifugation, stir at 80°C for 5h, filter and wash the activated carbon with water until pH = 7, 60°C dry overnight;
[0030] (2) Add 1 g of activated carbon treated in step (1) into 20 mL of deionized water, then add 0.08 g of chloroplatinic acid and 0.148 g of nickel nitrate into the activated carbon aqueous solution, stir at room temperature for 24 h, centrifuge and dry overnight at 60 ° C , to obtain the catalyst precursor;
[0031] (3) Reducing the catalyst precursor obtained in step (2) in a hydrogen atmosphere at 400° C. for 2 h to obtain a Pt(3)Ni(3) / C catalyst.
Embodiment 2
[0033] The preparation method of PtNi / C catalyst specifically comprises the steps:
[0034] (1) Weigh 50g of activated carbon to elute the dust in boiling deionized water for 2h, add 400mL of nitric acid solution with a mass fraction of 10% after centrifugation, stir at 80°C for 3h, filter and wash the activated carbon with water until pH = 7, 60°C dry overnight;
[0035] (2) Add 1 g of activated carbon treated in step (1) into 20 mL of deionized water, then add 0.08 g of chloroplatinic acid and 0.148 g of nickel nitrate into the activated carbon aqueous solution, stir at room temperature for 24 h, centrifuge and dry overnight at 60 ° C , to obtain the catalyst precursor;
[0036] (3) Reducing the catalyst precursor obtained in step (2) at 450° C. for 1 h in a hydrogen atmosphere to obtain a Pt(3)Ni(3) / C catalyst.
Embodiment 3
[0038] The preparation method of PtNi / C catalyst specifically comprises the steps:
[0039] (1) Weigh 50g of activated carbon to elute the dust in boiling deionized water for 2 hours, add 400mL of nitric acid solution with a mass fraction of 10% after centrifugation, stir at 80°C for 4h, filter and wash the activated carbon with water until pH = 7, 60°C dry overnight;
[0040] (2) Add 1 g of activated carbon treated in step (1) into 20 mL of deionized water, then add 0.08 g of chloroplatinic acid and 0.148 g of nickel nitrate into the activated carbon aqueous solution, stir at room temperature for 24 h, centrifuge and dry overnight at 60 ° C , to obtain the catalyst precursor;
[0041] (3) Reducing the catalyst precursor obtained in step (2) in a hydrogen atmosphere at 350° C. for 3 h to obtain a Pt(3)Ni(3) / C catalyst.
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