Preparation and application of a manganese oxide carbon composite catalyst material for low-temperature electrochemical catalytic denitrification
A composite catalyst and catalytic denitration technology, which is applied in the application of efficient electrochemical catalytic degradation of nitrogen oxides and the preparation of composite catalyst materials, can solve the problems of poor recyclability, high reaction temperature, affecting catalytic reaction, etc., and achieves low service temperature. , The effect of high nitrogen oxide conversion rate
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Embodiment 1
[0024] Weigh 0.012mol of potassium permanganate and dissolve it in 40ml of deionized water, and stir until it is completely dissolved; add 60mL of absolute ethanol, the purple color disappears completely after stirring, add 17.39g of activated carbon particles and continue to stir for 2 hours to obtain a brown suspension containing particles The solution was transferred to a 200ml hydrothermal kettle with a polytetrafluoroethylene liner, and subjected to hydrothermal treatment at a constant temperature of 160°C for 4 hours. The naturally cooled liquid was repeatedly centrifuged and washed with alcohol and deionized water for 3 times, and the obtained black-brown particles were air-dried in an oven at 80°C for 8 hours, then vacuum-dried for 4 hours, taken out and cooled to room temperature to obtain Mn 3 o 4 / Activated carbon particle catalyst material. Take 3g of catalyst material and fill it into a square tube type electrochemical catalytic reactor. On both sides of the squa...
Embodiment 2
[0026] Weigh 0.012mol of potassium permanganate and dissolve it in 40ml of deionized aqueous solution containing polyvinylpyrrolidone (PVP content 0.02g / ml), stir until completely dissolved; add 60mL of absolute ethanol, stir until the purple color disappears completely, add 17.39g of activated carbon particles Stirring was continued for 2 hours, and the obtained brown suspension containing particles was transferred to a 200 ml hydrothermal kettle with a polytetrafluoroethylene liner, and subjected to constant temperature hydrothermal treatment at 160° C. for 4 hours. The naturally cooled liquid was repeatedly centrifuged and washed with alcohol and deionized water for 3 times, and the obtained black-brown particles were air-dried in an oven at 80°C for 8 hours, then vacuum-dried for 4 hours, taken out and cooled to room temperature to obtain Mn 3 o 4 / Activated carbon particle catalyst material. Take 3g of catalyst material and fill it into a square tube type electrochemical...
Embodiment 3
[0028] Weigh 0.012mol of potassium permanganate and dissolve it in 40ml of deionized water, stir until completely dissolved; add cetyltrimethylammonium bromide (CTAB addition is 50mmol / L) and 60mL of absolute ethanol, and stir until the purple color disappears completely , add 17.39g activated carbon particles and continue to stir for 2 hours, the resulting brown suspension containing particles is transferred to a 200ml hydrothermal kettle with a polytetrafluoroethylene liner, and is subjected to constant temperature hydrothermal treatment at 160°C for 4 hours. The naturally cooled liquid was repeatedly centrifuged and washed with alcohol and deionized water for 3 times, and the obtained black-brown particles were air-dried in an oven at 80°C for 8 hours, then vacuum-dried for 4 hours, taken out and cooled to room temperature to obtain Mn 3 o 4 / Activated carbon particle catalyst material. Take 3g of catalyst material and fill it into a square tube type electrochemical cataly...
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