Nickel-palladium integral type catalyst for purification of volatile organic pollutant and preparation method
A volatile organic and pollutant technology, applied in the field of palladium-nickel monolithic catalyst, can solve the problems of low catalyst activity and stability, high production cost, etc., and achieve the effects of excellent catalytic purification, reduced dosage and excellent performance.
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Embodiment 1
[0048] The cordierite honeycomb carrier (cell density 26 / cm 2 , the pore volume is 0.3 ml / g), and placed in a 110°C drying oven for use. Weigh 15 grams of γ-Al 2 o 3 , 3 grams of cerium-zirconium powder, and 0.3 gram of lanthanum nitrate were mixed together, then 80 milliliters of deionized water was added, stirred at room temperature, and the pH value was adjusted to 4 with nitric acid at the same time to prepare a coating slurry.
[0049] The support was then dipped in the coating slurry for 5 minutes in a vacuum vessel. After taking it out, blow it with air, dry it at 110°C for 10 hours, and then bake it in air at 400°C for 3 hours before use.
[0050] Measure 0.82ml of aqueous palladium chloride solution with a concentration of 0.0122g / ml, add 0.13g of nickel nitrate, and after dissolving, add deionized water to 25ml to prepare a mixed solution of the precursor salt of the active component. The active component was impregnated on the cordierite honeycomb ceramic carrie...
Embodiment 2
[0053] The cordierite honeycomb carrier (cell density 26 / cm 2 , the pore volume is 0.3 ml / g), and placed in a 110°C drying oven for use. Weigh 45 grams of γ-Al 2 o 3 , 3 grams of cerium-zirconium powder, and 1.5 grams of lanthanum nitrate were mixed together, then 80 milliliters of deionized water was added, stirred at room temperature, and the pH value was adjusted to 4 with nitric acid at the same time to prepare a coating slurry.
[0054] The support was then dipped in the coating slurry for 5 minutes in a vacuum vessel. After taking it out, blow it with air, dry it at 110°C for 10 hours, and then bake it in air at 600°C for 6 hours before use.
[0055] Measure 3.28ml of aqueous palladium chloride solution with a concentration of 0.0122g / ml, add 2.0g of nickel nitrate, dissolve and add deionized water to 25ml to prepare a mixed solution of the precursor salt of the active component. The active component was impregnated on the cordierite honeycomb ceramic carrier coated ...
Embodiment 3
[0057] The cordierite honeycomb carrier (cell density 26 / cm 2 , the pore volume is 0.3 ml / g), and placed in a 110°C drying oven for use. Weigh 30 grams of γ-Al 2 o 3 , 3 grams of cerium-zirconium powder, and 1.2 grams of lanthanum nitrate were mixed together, then 80 milliliters of deionized water was added, stirred at room temperature, and the pH value was adjusted to 4 with nitric acid at the same time to prepare a coating slurry.
[0058] The support was then dipped in the coating slurry for 5 minutes in a vacuum vessel. After taking it out, blow it with air, dry it at 110°C for 10 hours, and then bake it in air at 500°C for 4.5 hours before use.
[0059] Measure 2.46ml of aqueous palladium chloride solution with a concentration of 0.0122g / ml, add 0.74g of nickel nitrate, dissolve and add deionized water to 25ml to prepare a mixed solution of the precursor salt of the active component. The active component was impregnated on the cordierite honeycomb ceramic carrier coat...
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