A kind of MNY catalyst for indoor formaldehyde catalytic removal and preparation method thereof
A technology of catalyst and catalyst carrier, which is applied in the direction of physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc. It can solve the problems of poor absorption effect, low absorption efficiency, high degradation cost, etc., achieve good catalytic performance and improve catalytic activity , the effect of large specific surface area
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Embodiment 1
[0031] (1) Weigh 5gNaY molecular sieve (SiO 2 / Al 2 o 3 =4.8, aperture The porosity is 50%) impregnated in 50 mL of acetone solution containing 1.4 g of manganese (II) acetylacetonate, and the manganese (II) acetylacetonate is uniformly adsorbed on Y molecular sieves and stirred at 25 ° C until the acetone solvent is completely volatilized to obtain a catalyst precursor;
[0032] (2) In the air, carry out temperature-programmed activation. The temperature-raising program is to increase the temperature at a rate of 3°C / min to 400°C, and activate at a constant temperature for 4 hours, so that manganese (II) acetylacetonate can decompose on NaY, forming a catalyst for the removal of formaldehyde. The active center-manganese oxide was then naturally cooled to room temperature and taken out to obtain a catalyst. In terms of metal, the loading of Mn was 6.1wt%.
[0033] Catalyst catalytic removal of formaldehyde in indoor air Reaction conditions and specific steps for evaluation...
Embodiment 2
[0036] (1) Weigh 5gNaY molecular sieve (SiO 2 / Al 2 o 3 =5.0, aperture Porosity 50%) impregnated in 50mL acetone solution containing 1.9g manganese (II) acetylacetonate, stirred at 35°C until the acetone solvent volatilized completely, and manganese (II) acetylacetonate was evenly adsorbed on Y molecular sieves to obtain the catalyst precursor ;
[0037] (2) In the air, the temperature-programmed activation is carried out. The temperature-raising program is to increase the temperature at a rate of 3°C / min to 450°C, and activate at a constant temperature for 4 hours, so that manganese (II) acetylacetonate can decompose on NaY, forming a catalyst for the removal of formaldehyde. The active center-manganese oxide was then naturally cooled to room temperature and taken out to obtain a catalyst. In terms of metal, the loading of Mn was 8.2wt%.
[0038] Catalyst catalytic removal of formaldehyde in indoor air Reaction conditions and specific steps for evaluation of adsorption cap...
Embodiment 3
[0041] (1) Weigh 5gNaY molecular sieve (SiO 2 / Al 2 o 3 =5.3, aperture porosity 50%) impregnated in 50mL of acetone solution containing 2.58g manganese (II) acetylacetonate, stirred at 30°C until the acetone solvent volatilized completely, and manganese (II) acetylacetonate was evenly adsorbed on Y molecular sieves to obtain the catalyst precursor ;
[0042] (2) In the air, the temperature program activation is carried out. The temperature increase program is to increase the temperature at a rate of 5 °C / min to 500 °C, and activate at a constant temperature for 3 hours, so that manganese (II) acetylacetonate can decompose on NaY, forming a catalyst for the removal of formaldehyde The active center-manganese oxide was then naturally cooled to room temperature and taken out to obtain a catalyst. In terms of metal, the loading of Mn was 11.4wt%.
[0043] Catalyst catalytic removal of formaldehyde in indoor air Reaction conditions and specific steps for evaluation of adsorpti...
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