Applicable load-type catalyst for purifying air at room temperature

Abstract

The present invention relates to an applicable load-type catalyst for purifying air at room temperature using copper, manganese and cerium as active ingredients and nano-palygorskite or nano-sepiolite powder as carriers, wherein contents of the copper, manganese and cerium account for 15%-40% of the total mass with a molar ratio of 1: 1: 1-1: 2: 4; and preparation technology includes a ultrasonic dispersion step for 1 hour, a stirring step at 30-50 DEG C for 2-4 hours, drying and activating steps at 110-120 DEG C for 5-10 hours, a calcination step in a muffle furnace at 500-800 DEG C for 3-6 hours, and a grinding step until a fineness is equal to or less than 20 microns. The applicable load-type catalyst is super strong in adsorption capacity, can continuously and effectively remove benzene, toluene and xylene (BTX), formaldehyde, CO, NO, SO2 and other harmful gases in the air, is high in processing efficiency, low in cost and wide in economic applicability, does not produce secondary pollution, and is suitable for the removal of pollutants at home, offices, hotels, conference rooms, furniture shopping malls, building material markets and other space.

Description

technical field [0001] The invention relates to a preparation method of a supported catalyst for purifying air, in particular to an applicable supported catalyst for purifying air at normal temperature, and belongs to the technical field of catalysts. Background technique [0002] People spend most of their life living and working indoors. The environmental pollution caused by interior decoration has become a social problem, and the phenomenon of human illness, disability and death has become a social problem. The gas has a great impact on the human body and can easily lead to respiratory diseases, cancer, leukemia, and neurological diseases, especially for pregnant women, children, and the elderly. [0003] Generally, people are used to ventilating for two months after decoration, and then move in. However, indoor decoration pollution is mainly chemical pollutants such as formaldehyde, benzene, ammonia, etc. The release period of such pollutants is up to 15 years, and the ...

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Problems solved by technology

[0006]3. Photocatalyst method, but the photocatalyst needs to be activated by ultraviolet light, and it has no effect at night and without visible light

In fact, photocatalysts have limited effect on removing polluting gases in the air, so developed countries rarely use them as civilian photocatalytic materials

[0007] 4. In addition, the plasma technology method is to generate a large amount of plasma to oxidize the formaldehyde in the air to achieve the purpose of purifying the air. This method is easy to generate ozone and cause secondary pollution to the air, and the device is complicated and energy-consuming; the traditional thermal catalytic oxidation method It uses a catalyst to catalyze the oxidation of formaldehyde under the action of heat energy, but this method generally requires a higher temperature

[0008] Supported catalysts for removing formaldehyde at room temperature have received extensive attention in recent years. However, at present, the supported catalysts for removing formaldehyde at room temperature contain precious metals such as gold, palladium, ruthenium, rhodium, and platinum. Promotion and application of room temperature catalytic oxidation method to remove formaldehyde, such as patents CN100360224C, CN102284288B, CN103894194A containing precious metals

For example, although patents CN103599793A, CN103433054A, and CN101274281B do not contain precious metals, they are only effective against air VOC S The formaldehyde in the air has a removal effect, and the air VOC S In addition to formaldehyde, there are pollutants such as triphenyl, ammonia, carbon monoxide, nitrogen monoxide, sulfur dioxide, etc., so it is very important to develop an economical and applicable catalyst that can effectively remove harmful substances in the air at room temperature