Ozone decomposition catalyst and preparation method thereof

Abstract

The invention discloses an ozone decomposition catalyst and a preparation method thereof. The ozone decomposition catalyst comprises a carrier and an active component, wherein the carrier is active carbon particles and the active component is manganese-copper compound oxide, manganese-iron compound oxide or manganese-ruthenium compound oxide; the mass ratio of manganese to copper, the manganese to iron or the manganese to ruthenium ranges from (1 to 10) to (10 to 1). The preparation method comprises the following steps: preparing a manganese active carbon catalyst; preparing a ferric trichloride solution, a copper acetate solution or a ruthenium trichloride solution; immersing the manganese active carbon catalyst into the ferric trichloride solution, the copper acetate solution or the ruthenium trichloride solution and standing for half day or longer; drying to obtain a manganese-iron active carbon compound catalyst, a manganese-copper active carbon compound catalyst or a manganese-ruthenium active carbon compound catalyst. The ozone decomposition catalyst and the preparation method thereof, disclosed by the invention, have the advantages of simple and safe technology, high ozone decomposition efficiency of the catalyst, relatively low cost, stable performance and long service life and has a wide application prospect.

Description

[technical field] [0001] The invention relates to a catalyst, in particular to an ozone decomposition catalyst and a preparation method thereof. [Background technique] [0002] Ozone is widely used. Industrial water treatment, flue gas desulfurization, and denitrification tail gas contain a large amount of undecomposed ozone. Ozone will be generated during the work of printers, copiers, and ultraviolet lamps in the disinfection and sterilization of medical and health and catering industries. [0003] Ozone, as a strong oxidizing gas, is inhaled into the body and quickly converted into highly active free radicals - superoxygen (O2*), which can oxidize unsaturated fatty acids, thereby causing cell damage, and can also cause inflammatory lesions of the upper respiratory tract . Prolonged exposure to ozone can also cause neurotoxicity, dizziness, headache, memory loss, vision loss, damage to the human immune system, induce lymphocyte lesions, and accelerate aging. The harm of ...

AI Technical Summary

Problems solved by technology

[0006] Chinese patent CN90106857 uses manganese and copper oxides as active components to decompose ozone. CN1259398A, CN17167674A and CN1357348A all use oxides of manganese, copper, nickel and cobalt as active components, which are loaded on activated carbon to decompose ozone. CN1785507A uses various A kind of manganese oxide is used as catalyst to decompose ozone at normal temperature and obtain better effect, but the performance of the ozonolysis catalyst prepared by the prior art is not stable enough, the service life is short, and the moisture resistance is relatively poor.