A honeycomb denitration catalyst with increased specific surface area and preparation method thereof
A technology of denitrification catalyst and specific surface area, applied in chemical instruments and methods, physical/chemical process catalysts, heterogeneous catalyst chemical elements, etc., can solve problems such as active center imbalance, achieve more active sites, ensure catalyst performance, The effect of high catalyst performance
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Embodiment 1
[0045] Add 20g of activated alumina to water, beat to form a slurry, and will contain TiO 2 500g of titanyl sulfate is dissolved in sulfuric acid solution to form TiO 2 For a 35g / L solution, add WO 3 Measure 10g of ammonium paratungstate solution, ultrasonically oscillate for 2 hours, then 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 5g of ammonium metavanadate solution was stirred and ultrasonically oscillated for 1.5h. After direct drying, it was roasted at 620°C for 6h; after roasting, the powder was mixed with MoO 3 A total of 10g of ammonium molybdate was made into a slurry with a water content of 30%. After stirring, 4g of scallop powder was added, stirred for 40min, sealed and left for 24h, extruded into a honeycomb shape, dried, and then coated with 15g of nano-scale tungsten oxide. The denitration cata...
Embodiment 2
[0049] Add 40g of activated alumina to water, beating to form a slurry, and will contain TiO 2 500g of titanyl sulfate is dissolved in sulfuric acid solution to form TiO 2 For 40g / L solution, add WO 3 A total of 15g of ammonium paratungstate solution, after ultrasonic vibration for 1 hour, gradually add ammonia water to adjust the pH value to 9.0, 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 20g of ammonium metavanadate solution was stirred and ultrasonically oscillated for 1.5h. After direct drying, it was roasted at 400°C for 6h; after roasting, the powder was mixed with MoO 3 A total of 3g of ammonium molybdate was made into a slurry with a water content of 30%. After stirring, 4g of scallop powder was added, stirred for 40min, sealed and allowed to stand for 10h, extruded into a honeycomb shape, dried, and then coated with 25g of nano-sized tungsten oxide. The deni...
Embodiment 3
[0053] Add 20g of activated alumina to water, beating to form a slurry, and will contain TiO 2 500g of titanyl sulfate is dissolved in sulfuric acid solution to form TiO 2 For 40g / L solution, add WO 3 A total of 12.5g of ammonium paratungstate solution, after ultrasonic vibration for 3 hours, gradually add ammonia water to adjust the pH value to 10.5, after the precipitation is complete, filter and wash; then use deionized water to make a slurry with a water content of 35%, add V 2 o 5 A total of 30g of ammonium metavanadate solution was stirred and ultrasonically oscillated for 1.5h. After direct drying, it was roasted at 400°C for 6h; after roasting, the powder was mixed with MoO 3 A total of 3g of ammonium molybdate was made into a slurry with a water content of 30%. After stirring, 4g of scallop powder was added, stirred for 40 minutes, sealed and left for 10 hours, extruded into a honeycomb shape, dried, and then coated with 25g of nano-sized tungsten oxide. The denit...
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