A kind of fuel cell cathode air filter adsorption filter material and its application
A fuel cell cathode and air filter technology, which is applied in fuel cells, circuits, electrical components, etc., can solve the problems of cylindrical filter elements such as complex process, high filter element resistance, and decreased adsorption performance of activated carbon plugging, and achieve strong adsorption affinity and oxidation Catalytic activity, strong flame retardant performance and decontamination performance, enhanced filter adsorption performance effect
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Embodiment 1
[0048] The present invention provides a nitrogen-containing modifier, which is prepared by the following steps:
[0049] Step C1, add 11.9g of diethylenetriaminopropyltrimethoxysilane to 150mL of deionized water, stir for 5min, pass nitrogen gas for 30min, add 0.1g of ascorbic acid, stir for 5min, add 0.1mL of 28% supernatant Hydrogen oxide solution, at room temperature, after stirring for 30 minutes, N-vinylpyrrolidone was added, and the reaction was stirred at 60 °C for 12 hours. The reaction solution was dialyzed in distilled water with an 8000kDa dialysis bag for 2 days, and the water was changed every 6 hours. The dialysis product was frozen at -45 °C drying to obtain pyrrolyl siloxane;
[0050] Step C2, add pentaerythritol and phosphorus oxychloride into the reaction flask, under nitrogen protection, stir at 60 °C for 1 hour, heat up to 105 °C and react for 9 hours, then distill out excess phosphorus oxychloride under reduced pressure, the reaction product is vacuumed at...
Embodiment 2
[0053] The present invention provides a nitrogen-containing modifier, which is prepared by the following steps:
[0054] Step C1, add 11.9 g of diethylenetriaminopropyl trimethoxysilane to 170 mL of deionized water, stir for 8 min, pass nitrogen for 30 min, add 0.1 g of ascorbic acid, stir for 5 min and add 0.1 mL of 28% permeate. Hydrogen oxide solution, at room temperature, after stirring for 30 minutes, N-vinylpyrrolidone was added, and the reaction was stirred at 60 °C for 12 hours. The reaction solution was dialyzed in distilled water with an 8000kDa dialysis bag for 2 days, and the water was changed every 6 hours. The dialysis product was frozen at -45 °C drying to obtain pyrrolyl siloxane;
[0055] Step C2: Add pentaerythritol and phosphorus oxychloride into the reaction flask, stir at 60°C for 1.5h under nitrogen protection, heat up to 105°C and react for 11h, then distill out excess phosphorus oxychloride under reduced pressure, and the reaction product is cooled at 8...
Embodiment 3
[0058] The present embodiment provides a kind of modified graphene, which is made by the following steps:
[0059] Step B1: Dissolve 20 g of ammonium polyphosphate in 100 mL of absolute ethanol, raise the temperature to 50°C, add dropwise a mixture of 8 g of ethyl orthosilicate and 100 mL of ammonia-water ethanol, hold the reaction for 2 h, and dry to remove the solvent to obtain microcapsules. g microcapsules were dispersed in 50 mL of toluene, 2.5 mL of KH-550 was added, and the reaction was stirred in a water bath at 60 °C for 24 h, then centrifuged, washed and dried to obtain amino microcapsules. 0.4 g of amino microcapsules were ultrasonically dispersed in 20 mL of deionized water, added 10 mL of graphene oxide dispersion was transferred to a hydrothermal reactor, stirred at 55 °C for 6 h, centrifuged, washed with deionized water for 3 times, and dried at 60 °C to constant weight to obtain intermediate product a, ammonia-water-ethanol mixture Ammonia solution with a mass ...
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