Formaldehyde purification material

Abstract

The invention provides a formaldehyde purification material which is composed of a DD3R molecular sieve and a noble metal active component. In terms of 100% of the variety of a catalyst, the mass fraction of the molecular sieve is 90-95%, and the mass fraction of the noble metal active component is 5-10%. According to the material, an adsorption carrier of the noble metal active component is selected, and it is guaranteed that formaldehyde in gas is subjected to preferential adsorption decomposition, so that the decomposition and purification rate of formaldehyde is ensured.

Description

technical field [0001] The present application relates to an air purification material, in particular to a material for purifying formaldehyde in the air at room temperature. Background technique [0002] Newly renovated houses will release harmful substances such as formaldehyde, benzene, toluene, xylene, etc. These harmful substances are particularly harmful to the human body, and long-term exposure will seriously affect human health and even endanger life. Compared with the release period of other types of polluting gases as low as 6 months, the release period of formaldehyde is longer, or as long as 3-15 years. Therefore, after several months of ventilation and deodorization after the house decoration, it is necessary to give priority to the purification of formaldehyde in the room. Commonly used removal methods for formaldehyde pollutants include physical adsorption (such as activated carbon, molecular sieves, etc.), biological methods, ozone oxidation, plant degradati...

AI Technical Summary

Problems solved by technology

However, in practical applications, it is found that formaldehyde is catalyzed and decomposed into water and carbon dioxide. Among them, water will deactivate the catalyst, and carbon dioxide will be adsorbed by porous materials, resulting in lower and lower performance of the catalyst for catalytic decomposition of formaldehyde.

Moreover, the prepared catalyst material has a large difference between the laboratory measurement effect and the actual application effect. This is because a single formaldehyde gas is often used in the laboratory for effect measurement, and the actual application gas also contains benzene, toluene, Xylene, acetone, water and other types of gases compete with formaldehyde in the catalytic process for adsorption, resulting in a huge difference between the final formaldehyde purification effect and the laboratory effect

[0004] In view of the above problems, the present invention provides a purification material for purifying formaldehyde gas in indoor air, which overcomes the technical problem of low formaldehyde purification rate caused by the competitive adsorption of various polluting gases on the adsorption material

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