Manganese-cerium composite oxide low-temperature denitration catalyst with hollow multi-shell microsphere structure
A composite oxide and low-temperature denitrification technology, which is applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of vanadium-titanium-based catalysts, catalyst poisoning, Temperature drop and other problems, to achieve the effect of improving low-temperature denitrification performance, good denitrification activity, and long contact time
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Embodiment 1
[0019] (1) Prepare 20ml of a mixed solution containing Ce ions and Mn ions, wherein the concentration of Ce ions is 0.029mol / L, and the concentration of Mn ions is 0.019mol / L. At the same time, 60ml of glucose solution of 0.53mol / L is prepared, and then the mixed solution is added to Stir evenly into the glucose solution;
[0020] (2) transfer the homogeneously mixed solution into a reaction kettle, and conduct a hydrothermal reaction at 180° C. for 20 hours;
[0021] (3) After naturally cooling to room temperature, the product of the hydrothermal reaction was washed three times with water and ethanol respectively, then dried at 80°C, and then calcined at 400°C in a muffle furnace for 7.5 hours to obtain a hollow Manganese-cerium composite oxide with multi-shell microsphere structure.
[0022] The microsphere Mn: (Mn+Ce) = 0.4, the diameter of the microsphere is 3 μm after testing, and the specific surface area is 180m 2 / g. Catalyst activity test adopts fixed bed reactor, ...
Embodiment 2
[0024] (1) Prepare 20ml of a mixed solution containing Ce ions and Mn ions, wherein the concentration of Ce ions is 0.029mol / L, and the concentration of Mn ions is 0.067mol / L. At the same time, 60ml of glucose solution of 0.53mol / L is prepared, and then the mixed solution is added to Stir evenly into the glucose solution;
[0025] (2) transfer the homogeneously mixed solution into a reaction kettle, and conduct a hydrothermal reaction at 180° C. for 20 hours;
[0026] (3) After naturally cooling to room temperature, the product of the hydrothermal reaction was washed three times with water and ethanol respectively, then dried at 80°C, and then calcined at 400°C in a muffle furnace for 7.5 hours to obtain a hollow Manganese-cerium composite oxide with multi-shell microsphere structure.
[0027] The microsphere Mn: (Mn+Ce) = 0.7, the diameter of the microsphere is 2.5 μm after testing, and the specific surface area is 112m 2 / g. Catalyst activity test adopts fixed bed reactor...
Embodiment 3
[0029] (1) Prepare 20ml of a mixed solution containing Ce ions and Mn ions, wherein the concentration of Ce ions is 0.029mol / L, and the concentration of Mn ions is 0.0072mol / L. At the same time, 60ml of glucose solution of 0.53mol / L is prepared, and then the mixed solution is added to Stir evenly into the glucose solution;
[0030] (2) transfer the homogeneously mixed solution into a reaction kettle, and conduct a hydrothermal reaction at 180° C. for 20 hours;
[0031] (3) After naturally cooling to room temperature, the product of the hydrothermal reaction was washed three times with water and ethanol respectively, then dried at 80°C, and then calcined at 400°C in a muffle furnace for 7.5 hours to obtain a Manganese-cerium composite oxide with multi-shell microsphere structure.
[0032] The microsphere Mn: (Mn+Ce) = 0.2, the diameter of the microsphere is 2.7 μm after testing, and the specific surface area is 115m 2 / g. Catalyst activity test adopts fixed bed reactor, inle...
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