Denitration catalyst as well as preparation method and application thereof
A technology of denitration catalyst and auxiliary agent, which is applied in the field of flue gas denitration, can solve the problems of difficult application of denitration catalyst, low nitrogen oxide efficiency, large energy consumption, etc. The effect of surface area
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[0026] The present invention provides a preparation method for the denitration catalyst described in the above scheme, which is characterized in that it comprises the following steps:
[0027] Dissolving positive divalent manganese salt and positive trivalent samarium salt in water to obtain an active precursor solution;
[0028] Immerse eggshell-shaped activated alumina balls into the active precursor solution for adsorption, and dry the adsorbed system to obtain a semi-finished product;
[0029] The semi-finished product is dipped into the potassium permanganate solution to cause an oxidation-reduction reaction, and the obtained solid product is washed and dried in sequence to obtain a denitration catalyst.
[0030] In the present invention, unless otherwise specified, the raw materials used are commercially available products well known in the art.
[0031] The invention dissolves positive divalent manganese salt and positive trivalent samarium salt in water to obtain acti...
Embodiment 1
[0054] Weigh 10mL of deionized water and pour it into a beaker, weigh 1.44g (8.32mmol) of manganese acetate and 0.224g (0.67mmol) of samarium nitrate and place them in the weighed deionized water, dissolve completely, and obtain the active precursor solution; Measure 10g eggshell-type activated alumina balls (particle size is 4-6mm, specific surface area is 300m 2 / g), placed in the prepared active precursor solution, let it stand for 12h for adsorption, then dried at 60°C for 5h and 100°C for 5h, and placed the dried semi-finished product in 10mL with a mass concentration of 8.95% (5.66mmol) In the potassium permanganate solution, let it stand for 12 hours to carry out oxidation-reduction reaction, wash the obtained solid product with water until the pH value is 7, and finally dry at 60°C for 12h and 110°C for 6h to obtain the denitrification catalyst, wherein , the mass of manganese is 8% of the mass of the eggshell-type activated alumina ball, and the mass of samarium is 1%...
Embodiment 2
[0056] Weigh 10mL deionized water and pour it into a beaker, weigh (7.92mmol) 1.37g manganese acetate, 0.448g (1.33mmol) samarium nitrate and place them in the weighed deionized water, dissolve completely, and obtain the active precursor solution; Measure 10g eggshell-type activated alumina balls (particle size is 4-6mm, specific surface area is 300m 2 / g), placed in the prepared active precursor solution, let it stand for 12h for adsorption, then dried at 60°C for 5h and 100°C for 5h, and placed the dried semi-finished product in 10mL with a mass concentration of 9.47% (6.0mmol) In the potassium permanganate solution, let it stand for 12 hours to carry out the redox reaction, wash the obtained solid product with water until the pH value is 7, and finally dry at 60°C for 12h and 110°C for 6h to obtain a denitrification catalyst, wherein, The mass of manganese is 8% of the mass of the eggshell-type activated alumina ball, and the mass of samarium is 2% of the mass of the eggshe...
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Abstract
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