Catalyst modified by proton conductor and using conductive polymer as carrier and preparation method thereof
A conductive polymer, catalyst technology, applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the electrochemical corrosion of carbon black, poor electrochemical stability, The problem of low mechanical strength of carbon black is to achieve the effect of strong oxidation resistance, good electrical conductivity and long service life.
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Embodiment 1
[0025] Take 5ml Nafion (5wt%) solution and add it to the mixed solution of 200ml ethanol and water, the mass ratio of absolute ethanol and water is 2:1, after stirring for 5-10min, add 5g / L H 2 PtCl 6 60ml continue to stir, adjust PH=10 with NaOH, under N 2 Stir fully under protection and keep heating at reflux at 80-100°C, the solution gradually turns from light yellow to black, and finally turns dark black to obtain Nafion-modified Pt colloid; after cooling, add 1g of 90wt% aniline solution to the Pt colloid, continue Stir for 2 to 3 hours; add 1 g of ammonium persulfate and 20 ml of hydrochloric acid solution with a concentration of 1 mol / L, and stir for 8 hours at 0°C, then add 0.05 g of conductive carbon black (XC-72R, produced by Cabot, USA), and mix , filtration, and alcohol washing to prepare a catalyst modified by proton conductor Nafion and using conductive polyaniline as a carrier. Among them, the Pt particle size is ≤5nm, the average particle size is 2.9nm, and t...
Embodiment 2
[0027] Take 8ml of sulfonated polyphenylene sulfide (10wt%) solution and add it to the mixed solution of 150ml of isopropanol and water, the mass ratio of isopropanol and water is 3:1, after stirring for 20min, add 4g / L of H 2 PtCl 6 60ml, 4g / L RuCl 3 60ml, continue to stir, adjust PH=11 with NaOH, in N 2Stir fully under protection and keep heating at reflux at 90-100°C to prepare PtRu colloid modified by sulfonated polyphenylene sulfide; after cooling, add 1.3g of 90wt% aniline solution to the PtRu colloid and continue stirring for 3 hours; add dichromic acid Potassium 2g and concentration are 20ml of the hydrochloric acid solution of 1mol / L, stir at 5 ℃ for 7 hours, then add 0.13g of conductive carbon black (BP-2000, produced by U.S. Cabot Company), through mixing, filtering and alcohol washing, the prepared A proton conductor sulfonated polyphenylene sulfide modified catalyst supported by conductive polyaniline. Among them, the average particle size of PtRu is 4.3nm, and...
Embodiment 3
[0029] Take 4.5ml of sulfonated polybenzimidazole (6wt%) solution and add it to the mixed solution of 250ml methanol and water, the mass ratio of methanol and water is 100:1, after stirring for 5-10min, add 5g / L H 2 PtCl 6 80ml, 5g / L SnCl 3 50ml continue to stir, adjust PH=10 with NaOH, in N 2 Stir fully under protection and keep heating at reflux at 80-100°C to prepare sulfonated polybenzimidazole-modified PtSn colloid; after cooling, add 1 g of 95wt% pyrrole solution to the PtSn colloid and continue stirring for 2-3 hours; add persulfuric acid 0.5g of sodium and 25ml of perchloric acid with a concentration of 2mol / L were stirred at 10°C for 6 hours, then 0.20g of conductive carbon black (XC-72R, produced by U.S. Cabot Corporation) was added, mixed, filtered, and washed with alcohol to prepare A catalyst modified by proton conductor sulfonated polybenzimidazole and supported by conductive polypyrrole was obtained. Among them, the average particle size of PtSn is 4.1nm, and...
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