A kind of preparation method of manganin-copper-based catalyst for degrading vocs

Abstract

The invention discloses a preparation method of a manganese-copper-based catalyst for degrading VOCs, using the self-propagating reaction of potassium permanganate and copper acetate to rapidly prepare a manganese-copper catalyst that can catalyze the degradation of toluene, and by changing the molar ratio of Mn and Cu, To regulate the catalytic activity of the manganese-copper-based catalyst, the catalyst can be completely (100%) converted in the reaction temperature range of 303°C-340°C in the range of 303°C-340°C for the catalyst at normal pressure and a space velocity of 30,000ml gcatalyst-1h-1. CO2 and H2O, the raw materials used in the catalyst are cheap, the preparation process is simple, efficient, and practical, and no toxic and harmful gases such as NOx will be produced in the preparation process. The manganin-copper-based catalyst prepared by the invention exhibits excellent catalytic combustion activity and can completely eliminate 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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