Preparation method of regenerated denitration catalyst by using aged vanadium-based catalyst and rare earth
A denitration catalyst and catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems of vanadium-based catalysts, such as the use effect and service life of difficult catalysts , to reduce the risk of environmental pollution, high activity, long life effect
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Embodiment 1
[0029] Inject 100 parts by mass of deionized water into the reaction kettle, turn on stirring and temperature control until the water temperature reaches 30 ° C, add 0.01 g of alkaline water and stir evenly; at this temperature, and under stirring conditions, add 0.1 g of citric acid to the 10ml of silica sol was stirred evenly; then 8g of cerium nitrate and 2g of lanthanum nitrate were added in sequence, and stirred evenly; then 0.1g of sodium dodecyl sulfonate and 50g of aged vanadium-based catalyst nanopowder were added, and the mixture was stirred evenly; then 5g of cordierite was added and stirred evenly ; Add 20g of titanium dioxide and stir evenly; then add 10g of aged vanadium-based catalyst nano-powder to obtain a uniformly stirred slurry;
[0030] Natural aging in the reactor for 1 hour;
[0031] The aged slurry is continuously heated and stirred in the evaporation pond to evaporate the liquid until the slurry is agglomerated and the surface is cracked to obtain a dr...
Embodiment 2
[0034] Inject 100 parts by mass of deionized water into the reaction kettle, start stirring and temperature control until the water temperature reaches 40 ° C, add 0.01 g of ammonia water and stir evenly; at this temperature, and under stirring conditions, 0.01 g of nitric acid, 5 g of nitric acid are added to the reaction kettle. The silicon powder was stirred evenly; then 9g of cerium nitrate and 3g of lanthanum nitrate were added in sequence, and the mixture was evenly stirred; then 0.1g of sodium dodecyl sulfonate and 60g of aged vanadium-based catalyst nano-powder were added, and the mixture was stirred evenly; 5g of clay was added and the mixture was evenly stirred; Add 20g of titanium dioxide and stir evenly; then add 20g of aged vanadium-based catalyst nano-powder to obtain a uniformly stirred slurry;
[0035] Natural aging in the reactor for 2 hours;
[0036] The aged slurry is continuously heated and stirred in the evaporation pond to evaporate the liquid until the s...
Embodiment 3
[0039] Inject 100 parts by mass of deionized water into the reaction kettle, start stirring and temperature control until the water temperature reaches 40 ° C, add 0.02 g of ammonia water and stir evenly; at this temperature, and under stirring conditions, add 0.01 g of nitric acid, 5 g of nitric acid to the reaction kettle The silicon powder was stirred evenly; 11g of cerium carbonate and 4g of lanthanum carbonate were added in sequence, and the mixture was stirred evenly; then 0.5g of sodium dodecyl sulfonate and 70g of aged vanadium-based catalyst nanopowder were added, and the mixture was stirred evenly; 5g of clay was added and the mixture was stirred evenly; Add 30g of titanium dioxide and stir evenly; then add 20g of aged vanadium-based catalyst nano-powder to obtain a uniformly stirred slurry;
[0040] Natural aging in the reactor for 5 hours;
[0041] The aged slurry is continuously heated and stirred in the evaporation pond to evaporate the liquid until the slurry is...
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