Catalyst for decomposing hydrogen peroxide as well as preparation method and use method of catalyst

Abstract

The invention discloses a catalyst for decomposing hydrogen peroxide as well as a preparation method and a use method of the catalyst. Raw materials of the catalyst comprise an active component and a catalyst carrier, wherein the active component is prepared from Al2O3, SiO2, CeO2, ZrO2, MgO, La2O3, TiO2, F2, Nd2O3 and Fe2O3; the catalyst carrier is prepared from CaO, PdO, HfO2, P2O5, K2O, HCl, Rh, ZnO and As2O3. The preparation method of the catalyst comprises the following steps: uniformly mixing the raw materials and then putting a mixture into a mold; carrying out high-temperature sintering at the temperature of 900 to 1100DEG C to obtain a porous ceramic solidified material, namely the catalyst. The use method of the catalyst comprises the following steps: firstly, introducing the hydrogen peroxide gas into an isolator, and carrying out sterilization treatment; secondly, decomposing the remaining hydrogen peroxide gas by the catalyst until the concentration of the gas is reduced to below 1ppm. The catalyst provided by the invention has the advantages of high catalytic speed, stable catalytic effect and good efficiency and safety.

Description

technical field [0001] The invention relates to a catalyst for decomposing hydrogen peroxide, a preparation method and a use method thereof. Background technique [0002] Hydrogen peroxide began to be used in the sterilization of packaging materials for food equipment in the 1970s. It was officially approved by the US Environmental Protection Agency in the 1980s as a disinfectant and sterilizer that can replace formaldehyde or other disinfectants and meet environmental protection requirements. Although hydrogen peroxide is harmless, it is harmful to the human body and the environment when it appears as a gas molecule. [0003] Hydrogen peroxide has a peroxy bond, and O in -O-O- is not the lowest oxidation state, so it is unstable and easy to break. The decomposition of hydrogen peroxide can be accelerated by irradiation of light with a wavelength of 320-380nm at room temperature, or heating, and the use of a catalyst. The light speed is too slow, heating wastes energy, and...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to overcome the defect that transition element oxides in the prior art have too fast a catalytic rate as a catalyst and are difficult to control, and provide a catalyst for decomposing hydrogen peroxide and its preparation method and use method

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