Method for preparing manganese-copper-based catalyst for degrading VOCs (Volatile Organic Compounds)

Abstract

The invention discloses a method for preparing a manganese-copper-based catalyst for degrading VOCs (Volatile Organic Compounds). According to the method, the manganese-copper-based catalyst capable of catalytically degrading toluene is prepared rapidly by using a self-propagating reaction between potassium permanganate and cupric acetate; the catalytic activity of the manganese-copper-based catalyst is regulated and controlled through changing the mole ratio of Mn to Cu, and the catalyst can be used for completely (100%) converting a 1000ppm gas mixture of toluene and air into CO2 and H2O at the reaction temperature range of 303 DEG C to 340 DEG C at normal pressure at the air speed of 30,000ml gcatalyst<1>h<1>; and the raw materials used by the catalyst are low in price, the preparation process is simple and efficient and is high in practicability, and toxic and harmful gases such as NOx cannot be produced in the preparation process. The manganese-copper-based catalyst prepared by using the method shows excellent catalytic combustion activity and can be used for completely eliminating low-concentration VOCs.

Description

technical field [0001] The invention relates to the field of environmental protection and chemical technology, in particular to a manganese-copper-based catalyst for degrading volatile organic compounds and a preparation method thereof, in particular to a manganese-copper-based catalyst for completely catalytic combustion of volatile organic compounds such as toluene Catalyst efficient preparation method. Background technique [0002] Volatile organic compounds (Volatile organic compounds, VOCs) are the main pollutants in the atmosphere, which are seriously affecting and endangering human health. Relevant studies have proved that more than 200 kinds of VOCs have the possibility of carcinogenic, mutagenic or teratogenic to organisms, such as benzene series (benzene, toluene, xylene, etc.). Therefore, the control and treatment of VOCs in the atmosphere is a key issue in environmental protection. Catalytic combustion technology can degrade VOCs into CO by flameless combustion...

AI Technical Summary

Problems solved by technology

The precursors used in the impregnation method are often nitrates, which will produce NO in the subsequent roasting process x , not only high energy consumption, but also pollute the environment

Co-precipitation method often uses alkaline precipitant in the preparation process, which will corrode the equipment and increase the investment cost

However, because the hydrothermal method is carried out in a high temperature and high pressure environment, it is difficult to scale up industrially.

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