A method for degrading high-concentration unsymmetrical dimethylhydrazine wastewater
A high-concentration technology of unsymmetrical dimethylhydrazine, applied in chemical instruments and methods, water pollutants, oxidized water/sewage treatment, etc., can solve problems such as difficult storage, expensive complexes, and reduced utilization rate, and achieve Improve the treatment effect, improve the utilization efficiency, and reduce the effect of adding amount
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Embodiment 1
[0023] Weigh 35g of tetraethyl orthosilicate (TEOS), 70g of absolute ethanol, and 140g of deionized water to make a mixed solution, the mass ratio of TEOS: absolute ethanol: deionized water is 1:2:4, and weigh 0.218g of Add the ferrous acetate solid into the mixed solution and stir to dissolve, add dilute nitric acid to adjust the pH to 3, add a small amount of diethanolamine to the above solution to condense and reflux, then put the obtained product into an oven, dry the water to form a gel, and dry the gel Put it into a muffle furnace and calcinate at 300°C for 3h to obtain nano-iron-based SiO 2 , the nano-iron-based SiO 2 Grind to obtain a powdery solid, weigh 0.22g rhodium acetate, add it to absolute ethanol, dissolve it and immerse it in nano-iron-based SiO 2 Stir in the powder solid to form a suspension, stir and impregnate for 10 hours, so that Rh is wrapped on the surface of Fe, put it into a muffle furnace after drying, and calcinate at 300 ° C for 3 hours to obtain ...
Embodiment 2
[0025] Weigh 35g of tetraethyl orthosilicate (TEOS), 105g of absolute ethanol, and 210g of deionized water to make a mixed solution, the mass ratio of TEOS: absolute ethanol: deionized water is 1:3:6, and weigh 0.544g of Add the ferrous acetate solid into the mixed solution and stir to dissolve, add dilute nitric acid to adjust the pH to 3, add a small amount of diethanolamine to the above solution to condense and reflux, then put the obtained product into an oven, dry the water to form a gel, and dry the gel Put it into a muffle furnace and calcinate at 350°C for 4h to obtain nano-iron-based SiO 2 , the nano-iron-based SiO 2 Grind to obtain a powdery solid, weigh 0.55g rhodium acetate, add it to absolute ethanol, dissolve it and immerse it in nano-iron-based SiO 2 Stir in the powder solid to form a suspension, stir and impregnate for 10 hours, so that Rh is wrapped on the surface of Fe, put it into a muffle furnace after drying, and calcinate at 350 ° C for 4 hours to obtain...
Embodiment 3
[0027]Weigh 35g of tetraethyl orthosilicate (TEOS), 140g of absolute ethanol, and 280g of deionized water to make a mixed solution, the mass ratio of TEOS: absolute ethanol: deionized water is 1:4:8, and weigh 1.088g of Add the ferrous acetate solid into the mixed solution and stir to dissolve, add dilute nitric acid to adjust the pH to 3, add a small amount of diethanolamine to the above solution to condense and reflux, then put the obtained product into an oven, dry the water to form a gel, and dry the gel Put it into a muffle furnace and calcinate at 410°C for 6h to obtain nano-iron-based SiO 2 , the nano-iron-based SiO 2 Grind to obtain a powdery solid, weigh 1.1g rhodium acetate, add it to absolute ethanol, dissolve it and immerse it in nano-iron-based SiO 2 Stir in the powder solid to form a suspension, stir and impregnate for 10 hours, so that Rh is wrapped on the surface of Fe, put it into a muffle furnace after drying, and calcinate at 410 ° C for 6 hours to obtain a...
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