Flue gas denitrification catalyst and preparation method thereof
A denitrification catalyst and flue gas technology, applied in the direction of chemical instruments and methods, physical/chemical process catalysts, heterogeneous catalyst chemical elements, etc., can solve the problem of low denitrification efficiency of catalysts, and achieve simple preparation methods and high denitrification efficiency Effect
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Embodiment 1
[0020] LaMnO 3 Preparation: Weigh lanthanum nitrate and manganese nitrate according to the stoichiometric ratio of 1:1, and dissolve them in deionized water. Dissolve alanine with a molar ratio of 1.5 times that of nitrate in water, add it to the nitrate solution, and heat at 60°C while stirring to form a viscous solution. Then place it in a drying room for drying at a temperature of 300°C. After drying, calcinate in a calciner at 500°C for 5 hours, and pass through a 600-mesh screen to obtain the carrier LaMnO 3 powder.
[0021] Then with ammonium metavanadate and palladium acetate (in the final catalyst, the active material is respectively represented by V 2 o 5 Exist in the form of PdO and transform in the final firing process. ) solution according to V 2 o 5 The content is 1.5%, the loading of Pd0.1% is LaMnO with a mass ratio of 1:5 3 and TiO 2 The carrier powder is mixed, and extrusion aids are added to mix to form a uniform mud. After one day of aging, the mud i...
Embodiment 2
[0023] LaMnO 3 Preparation: Weigh lanthanum nitrate and manganese nitrate according to the stoichiometric ratio of 2:1, and dissolve them in deionized water. Dissolve alanine with a molar ratio of 1.5 times that of nitrate in water, add it to the nitrate solution, and heat at 60°C while stirring to form a viscous solution. Then place it in a drying room for drying at a temperature of 300°C. After drying, calcinate in a calciner at 500°C for 5 hours, and pass through a 600-mesh screen to obtain the carrier LaMnO 3 powder.
[0024] Then ammonium metavanadate and palladium acetate solution according to V 2 o 5 LaMnO with 3% loading and 0.01% Pd content to mass ratio of 1:5 3 and TiO 2 The carrier powder is mixed, and extrusion aids are added to mix to form a uniform mud. After one day of aging, the mud is extruded into a catalyst mud embryo with an extruder. The number of catalyst holes is 60 holes. The mud embryo was dried in a drying room at 45°C for 10 days. After drying...
Embodiment 3
[0026] LaMnO 3 Preparation: Weigh lanthanum nitrate and manganese nitrate according to the stoichiometric ratio of 1:2, and dissolve them in deionized water. Dissolve alanine with a molar ratio of 1.5 times that of nitrate in water, add it to the nitrate solution, and heat at 80°C while stirring to form a viscous solution. Then place it in a drying room for drying at a temperature of 300°C. After drying, calcinate in a calciner at 500°C for 5 hours, and pass through a 600-mesh screen to obtain the carrier LaMnO 3 powder.
[0027] Then ammonium metavanadate and palladium acetate solution according to V 2 o 5 Content is 2%, LaMnO with Pd0.05% loading and mass ratio of 1:5 3 and TiO 2 The carrier powder is mixed, and extrusion aids are added to mix to form a uniform mud. After one day of aging, the mud is extruded into a catalyst mud embryo with an extruder. The number of catalyst holes is 50 holes. Put the mud embryo in a drying room at 45°C for 10 days. After drying, put ...
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