Preparation method of denitration catalyst with nano-multi-walled spherical spinel structure
A spinel structure and denitration catalyst technology, which is applied in the field of denitration catalyst preparation, can solve the problems of few surface pores, low specific surface area of nanoparticles, influence and the like, and achieves the effects of low toxicity, improved catalytic activity and control of production cost
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Embodiment 1
[0026] Take fructose as the carbon precursor, and deionized water, configure the sugar / water mixed solution of 0.2mol / L, then transfer it to the autoclave, at 150 o C conditions were reacted for 5h, after natural cooling, the product was washed three times alternately with water / ethanol respectively, at 90 o Dry overnight at C and set aside;
[0027] Weigh cobalt acetate and manganese acetate with a molar ratio of 1:0.2 and dissolve them in ethanol / water mixture with a volume ratio of 1:1 to form a precursor with a concentration of (cobalt salt + manganese salt) of 0.2mol / L solution; at the same time, weigh the prepared carbon template, mix it with the precursor solution at a mass ratio of 1:10, and sonicate for 30 minutes. Then at 20 o Adsorption is carried out under the condition of C, and the adsorption time is 4h. After the adsorption was completed, the product was alternately washed with water / ethanol at 60 o C after drying at 1 o The heating rate of C / min is raised ...
Embodiment 2
[0030] Take glucose as the carbon precursor, and deionized water to configure a 0.4mol / L sugar / water mixed solution, which is then transferred to a high-pressure reactor, at 170 o Under the condition of C, reacted for 12h, after natural cooling, the product was washed three times alternately with water / ethanol respectively, at 90 o Dry overnight at C and set aside;
[0031] Weigh ferric chloride and manganese chloride with a molar ratio of 1:0.5, dissolve them in ethanol / water mixture with a volume ratio of 1:3, and make (iron salt + manganese salt) concentration of 0.4mol / L Precursor solution; at the same time, weigh the prepared carbon template, mix it with the precursor solution at a mass ratio of 1:20, and sonicate for 30 minutes. Then at 50 oAdsorption is carried out under the condition of C, and the adsorption time is 6h. After the adsorption was completed, the product was alternately washed with water / ethanol at 60 o C after drying at 3 o The heating rate of C / min ...
Embodiment 3
[0034] Take sucrose as the carbon precursor, and deionized water to configure a 0.5mol / L sugar / water mixed solution, which is then transferred to a high-pressure reactor, at 190 o Reaction under the condition of C for 20h, after natural cooling, the product was washed three times alternately with water / ethanol respectively, at 90 o Dry overnight at C and set aside;
[0035] Weigh cobalt nitrate and cerium nitrate with a molar ratio of 1:0.7, and dissolve them in an ethanol / water mixture with a volume ratio of 1:4 to form a precursor with a concentration of (cobalt salt + cerium salt) of 0.5mol / L solution; at the same time, weigh the prepared carbon template, mix it with the precursor solution at a mass ratio of 1:30, and sonicate for 30 minutes. Then at 60 o Adsorption is carried out under the condition of C, and the adsorption time is 10 h. After the adsorption was completed, the product was alternately washed with water / ethanol at 60 o C after drying at 3 o The heating ...
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