Preparation method for photocatalyst used for treating volatile organic compounds

A technology of volatile organic compounds and photocatalysts, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve high cost, complicated preparation process, and difficulty in industrial scale-up and other problems, to achieve the effects of wide absorption range, simple preparation steps, and improved catalyst efficiency
CN103521218AActive Publication Date: 2014-01-22CNOOC TIANJIN CHEM RES & DESIGN INST +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CNOOC TIANJIN CHEM RES & DESIGN INST
Publication Date
2014-01-22

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Abstract

The invention provides a preparation method for a photocatalyst used for treating volatile organic compounds. The preparation method is characterized in that titanium dioxide is used as a main active component, a transition metal is added as an auxiliary agent, and a normal temperature spraying process is employed to load titanium dioxide on a metal or ceramic honeycomb carrier. The preparation method comprises the following concrete steps: A) dissolving titanyl sulfate in deionized water, adjusting a pH value to 7 to 10 by using a 5 to 25% ammonia-water solution, subjecting an obtained white precipitate to centrifugation and washing, mixing and beating the precipitate and deionized water and adjusting the pH value to 7 to 10 by using H2O2 and HCl with stirring so as to obtain a titanium sol; B) adding a surfactant into the titanium sol, adding micro metal oxide powder with stirring, adding a binder and carrying out high-speed shearing and uniform stirring so as to prepare a stable coating solution; and C) uniformly spraying the coating solution on the carrier and drying and roasting the carrier so as to obtain a finished catalyst product. The catalyst prepared by using the method has the characteristics of high volatile organic compound removal efficiency, a long life, easy loading and unloading, a low price, etc.
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Description

Technical field:

[0001] The invention relates to the field of catalyst manufacture and aims to provide a method for preparing a photocatalyst for treating volatile organic compounds. The catalyst of the present invention is mainly used for gaseous pollutants in volatile organic compounds. Background of the invention:

[0002] Volatile Organic Compounds (VOCs for short) are organic compounds with a boiling point between 50°C and 260°C under normal pressure. There are many kinds of VOCs (including aromatic hydrocarbons, esters, aldehydes and phenols, etc.) The placement and use of reagents and medicines, as well as the volatiles of samples, the leakage and emptying of intermediate products in the analysis process, etc., will generate VOCs exhaust gas. Many VOCs have neurotoxicity, kidney and liver toxicity, and even carcinogenicity. They can damage blood components and cardiovascular system, cause gastrointestinal disorders, induce immune system, endocrine system and hematop...

Claims

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