Diatomite composite catalyst as well as preparation method and application thereof
A composite catalyst, diatomite technology, applied in chemical instruments and methods, physical/chemical process catalysts, separation methods, etc., can solve the problems of unknown stability, loss of active components, high cost of precious metals, and achieve good thermal stability and Adsorptive, eliminate carbon monoxide and formaldehyde, improve the effect of reaction mass transfer
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Embodiment 1
[0057] This example provides a diatomite composite catalyst for the low-temperature elimination of carbon monoxide and formaldehyde, which consists of 1 g of modified diatomite carrier added with catalyst additive Fe and 0.001 g of active component Pt. Wherein, the loading amount of the noble metal active component Pt is 0.1 wt% of the modified diatomite carrier added with the catalyst promoter Fe, and the additive amount of Fe is 1 wt% of the modified diatomite carrier.
[0058] Its preparation method is as follows:
[0059] S1, modified with diatomaceous earth.
[0060] The first step: prepare 1mol / L sodium hydroxide solution. Weigh 1 g of diatomaceous earth into the above alkaline solution, and stir at 25° C. for 2 h.
[0061] The second step: evaporate the solid-liquid mixture obtained in the first step to dryness in an 80°C water bath, and put it in an oven for drying. The dried samples were calcined at 600 °C for 3 h. Modified diatomite doped with sodium ions is obta...
Embodiment 2
[0082] This example provides a diatomite composite catalyst for low-temperature elimination of carbon monoxide and formaldehyde, which is composed of 1 g of modified diatom earth carrier added with catalyst additive Cu-Zr and 0.001 g of active component Au-Rh. Among them, the loading amount of the noble metal active component Au-Rh is 0.1wt% of the modified diatomite carrier added with the catalyst additive Cu-Zr, and the addition amount of the auxiliary agent Cu-Zr is 1wt% of the modified diatomite carrier .
[0083] Its preparation method is as follows:
[0084] S1, modified with diatomaceous earth.
[0085] The first step: prepare 1mol / L potassium hydroxide solution. Weigh 1 g of diatomaceous earth into the above alkaline solution, and stir at 25° C. for 2 h.
[0086] The second step: evaporate the solid-liquid mixture obtained in the first step to dryness in an 80°C water bath, and put it in an oven for drying. The dried samples were calcined at 600 °C for 3 h. A modi...
Embodiment 3
[0107] This example provides a diatomite composite catalyst for low-temperature elimination of carbon monoxide and formaldehyde, consisting of 1g of modified diatomite carrier with catalyst additive Fe-La-Al and 0.001g of active component Rh-Os-Ir constitute. Among them, the loading amount of the noble metal active component Rh-Os-Ir is 0.1wt% of the modified diatomite carrier with the addition of the catalyst promoter Fe-La-Al, and the amount of the additive Fe-La-Al is modified silicon 1 wt% of algal earth carrier.
[0108] Its preparation method is as follows:
[0109] S1, modified with diatomaceous earth.
[0110] The first step: prepare 1mol / L mixed solution of sodium carbonate and potassium carbonate. Weigh 1 g of diatomaceous earth into the above alkaline solution, and stir at 25° C. for 2 h.
[0111] The second step: evaporate the solid-liquid mixture obtained in the first step to dryness in an 80°C water bath, and put it in an oven for drying. The dried samples w...
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