A kind of catalyst for formaldehyde degradation
A formaldehyde degradation and catalyst technology, applied in physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, chemical instruments and methods, etc., can solve problems such as incomplete mineralization of formaldehyde, and achieve improved redox Ability, mild reaction conditions, effect of improving usability
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Embodiment 1
[0035] In the reaction vessel, add a formaldehyde solution with a content of 0.1mg / L, and then add a vanadium- and molybdenum-containing polyoxometalate catalyst. The mass ratio of the solution to the catalyst is 100:3; air is introduced while stirring at room temperature and air pressure , the air flow rate is controlled at 0.03h / L, the stirring speed is controlled at 300rmp, the reaction is 12h, and the catalyst is separated by centrifugation; the degradation rate of formaldehyde reaches 69%; and the formaldehyde is mineralized into simple inorganic molecules CO 2 and H 2 O.
Embodiment 2
[0037] In the reaction vessel, add a formaldehyde solution with a content of 0.5mg / L, and then add a vanadium- and molybdenum-containing polyoxometalate catalyst. The mass ratio of the solution to the catalyst is 100:1; air is introduced while stirring at room temperature and air pressure , the air flow rate is controlled at 0.1h / L, the stirring speed is controlled at 100rmp, the reaction is 3h, and the catalyst is separated by centrifugation; the degradation rate of formaldehyde reaches 78%; and formaldehyde is mineralized into simple inorganic molecules CO 2 and H 2 O.
Embodiment 3
[0039] In the reaction vessel, add a formaldehyde solution with a content of 50mg / L, and then add a vanadium- and molybdenum-containing polyoxometalate catalyst. The mass ratio of the solution to the catalyst is 100:5; air is introduced while stirring at room temperature and air pressure. The air flow rate is controlled at 0.09h / L, the stirring speed is controlled at 290rmp, the reaction is 12h, and the catalyst is separated by centrifugation; the degradation rate of formaldehyde reaches 94%; and the formaldehyde is mineralized into a simple inorganic molecule CO 2 and H 2 O.
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