A kind of porous composite catalyst material for air purification and preparation method thereof

Abstract

The invention provides an air purifying porous composite catalyst material and a preparation method thereof. The preparation method comprises the following steps: adding an inorganic porous material in a mixed solution of Mn II salt and Cu II salt, heating, fully stirring and carrying out adsorption reaction, and filtering to obtain a porous catalyst material precursor; and mixing the porous catalyst material precursor with an oxidizing agent, reacting in a reactor at high temperature under high pressure, cleaning, filtering and drying to obtain the porous composite catalyst material. The preparation process is simple, and the cost is low; the doping level is high, and fibrous manganite of which crystal lattices are horizontally doped with metal ions can be obtained; and by a high-temperature and quenching process, a large number of cracks are formed in particles, specific surface area is large, the number of active sites is large, and catalysis reactivity is high.

Description

technical field [0001] The invention relates to the field of environmental protection and air purification materials, in particular to an air purification porous composite catalyst material and a preparation method thereof. Background technique [0002] Among the current outstanding air pollution problems, the volatile harmful gases in it seriously endanger human health. The harmful volatile organic compounds in the air are referred to as VOC (Volatile organic compounds), including benzene, toluene, ethylbenzene, xylene, benzene Ethylene, propylene glycol, ethane, phenols, formaldehyde, etc. VOC in the air has great harm to human health, some have stimulating effect on human body, some have poisonous effect on human body, easily cause acute and chronic poisoning of human body, and some have carcinogenic effect or gene mutation effect. When in a room where VOC reaches a certain concentration, there will be symptoms such as nausea, vomiting, fatigue and headache in a short pe...

AI Technical Summary

Problems solved by technology

Among them, physical adsorption technology mainly uses porous materials or solvents for adsorption, and its treatment capacity is limited and it is difficult to achieve the purpose of eradication.

Photocatalytic oxidation technology uses the oxidation-reduction reaction on the surface of titanium dioxide under photocatalytic conditions to achieve the purpose of degrading VOC pollutants. There are three problems in this method: one is the ultraviolet light in the process of catalytic reaction. The utilization efficiency is limited, the second is that the material itself is easily deactivated during the reaction process, and the third is that the condition that light is always needed during the reaction process is difficult to apply under indoor conditions

The above-mentioned impregnation doping is to adsorb doping substances after the product is formed, and can only rely on surface adsorption to adsorb a small amount of doped metal ions to its surface, the doping effect is limited, and deep doping at the lattice level cannot be achieved.

Moreover, the synthesis process for generating doped catalysts is complicated and the impregnation time is long.

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