A kind of attapulgite clay composite catalyst for removing formaldehyde and its preparation method and application

Abstract

The invention discloses an attapulgite clay composite catalyst for removing formaldehyde and a preparation method and application thereof. The composite catalyst is mainly prepared from a composite carrier, precious metal components and active metal components; the composite carrier is mainly prepared from the following raw materials in part by weight: 30-45 parts of attapulgite clay, 25-35 partsof metal oxide, 8-15 parts of polybutyl acrylate, 3-8 parts of methylcellulose, 5-10 parts of fatty acid diethanolamide, and 5-10 parts of phthalandione; the precious metal component adding amount occupies 0.0005-0.001% of the mass of the attapulgite clay based on the mass of the precious metal element, and the adding amount of the active metal component occupies 0.01-0.02% of the mass of the attapulgite clay based on the mass of the active metal element. The composite catalyst prepared through the method is large in specific surface, stable in structure, good in photocatalytic performance, capable of effectively removing formaldehyde in the environment, simple and convenient in preparation method, and can be applied to the industrial production.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and in particular relates to an attapulgite clay composite catalyst for removing formaldehyde, a preparation method and application thereof. Background technique [0002] Formaldehyde, as a common indoor toxic pollutant gas, is widely derived from the release of building materials, decorative items, and furniture materials. Formaldehyde has been identified as a carcinogen by the World Health Organization. Even a low dose of formaldehyde will have a strong stimulating effect on the eyes, skin and respiratory organs after long-term exposure to the human body. It has a strong carcinogenic and cancer-promoting effect and is easy to cause nasopharyngeal cancer , colon cancer, genetic mutations in the nucleus, and leukemia. In order to meet the increasingly stringent environmental protection rules and people's pursuit of a higher quality of life, the effective removal of indoor formaldehyde gas has ...

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Problems solved by technology

[0007] Purpose of the invention: Aiming at the problems existing in the prior art, the present invention provides a formaldehyde-removing attapulgite clay composite catalyst. The composite catalyst makes full use of the combination of attapulgite clay and metal oxide carriers such as titanium dioxide to form overlapping composite catalysts. The carrier is formed by loading noble metals and active metals on a composite carrier. It has excellent photocatalytic performance, can effectively remove formaldehyde in the environment, and avoids the problems of insufficient strength in the reaction process and low conversion rate of ordinary catalysts alone. The composite catalyst of the present invention With a very low concentration of precious metals, not only the catalytic activity is high, but also the problem of high cost is overcome

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