Denitration catalyst for reducing SO2 oxidation rate and preparation method thereof
A denitrification catalyst and oxidation rate technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, separation methods, etc., can solve the problems of high oxidation rate, unbalanced active center, unstable activity, etc., to achieve uniform dispersion, catalyst Good activity and resistance to uneven deposition
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Embodiment 1
[0047] will contain TiO 2 500g of titanyl sulfate is dissolved in the sulfuric acid solution, adding 3 A total of 22.5g of ammonium metatungstate and 5g of ammonium fluoride solution in terms of F form a TiO-containing 2 It is a 35g / L mixed solution. After stirring for 2 hours, gradually add ammonia water to adjust the pH value to 9.5. After the precipitation is complete, filter and wash; then use deionized water to make a slurry with a water content of 50%, and add V 2 o 5 A total of 12.5g of ammonium metavanadate solution, stirred for 1.5h, dried directly, and roasted at 600°C for 8h; after roasting, the powder was mixed with WO 3 A total of 7.5g of ammonium metatungstate solution was made into a slurry with a water content of 30%. After stirring, 4g of polyethylene oxide was added, stirred for 40min, sealed and left for 24h, and dried; The denitrification catalyst was obtained after immersing in 10% ethyl ester ethanol solution for 15 seconds, filtering, drying, and roas...
Embodiment 2
[0051] will contain TiO 2 500g of titanyl sulfate is dissolved in the sulfuric acid solution, and the 3 20g of ammonium molybdate and 4g of ammonium fluoride solution in terms of F to form TiO 2 It is a 35g / L mixed solution. After stirring for 2 hours, gradually add ammonia water to adjust the pH value to 8.5. After the precipitation is complete, filter and wash; then use deionized water to make a slurry with a water content of 50%, and add V 2 o 5 A total of 11.5g of ammonium metavanadate solution, stirred for 1.5h, dried directly, and roasted at 600°C for 8h; after roasting, the powder was mixed with MoO 3 A total of 7.5g of ammonium molybdate solution was made into a slurry with a water content of 30%. After stirring, 4g of polyethylene oxide was added, stirred for 40min, sealed and left for 24h, and dried; The denitrification catalyst was obtained by immersing in 5% ethanol solution of the ester for 10 seconds, filtering, drying, and roasting at 600° C. for 8 hours. Th...
Embodiment 3
[0055] will contain TiO 2 500g of titanyl sulfate is dissolved in the sulfuric acid solution, and the 3 20g of ammonium molybdate, in WO 3 20g of ammonium metatungstate and 4g of ammonium fluoride solution in terms of F to form TiO-containing 2 It is a 35g / L mixed solution. After stirring for 2 hours, gradually add ammonia water to adjust the pH value to 8.5. After the precipitation is complete, filter and wash; then use deionized water to make a slurry with a water content of 50%, and add V 2 o 5 A total of 10g of ammonium metavanadate solution, stirred for 1.5h, dried directly, and roasted at 600°C for 8h; after roasting, the powder was mixed with MoO 3 A total of 6g of ammonium molybdate solution was made into a slurry with a water content of 30%. After stirring, 4g of polyethylene oxide was added, stirred for 40min, sealed and left for 24h, and dried; Put in 8% ethanol solution for 6 seconds, filter, dry, and roast at 600° C. for 8 hours to obtain a denitration catalys...
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