MnOx catalyst for catalytically eliminating benzene series in air and preparation method of MnOx catalyst

Abstract

The invention discloses a MnOx catalyst for catalytically eliminating benzene series in air and a preparation method of the MnOx catalyst. The active component of the catalytically eliminating benzene series in air is mixed oxide of MnO2 and Mn2O3; and the mixed oxide of MnO2 and Mn2O3 is provided with a mesoporous structure. The preparation method of the MnOx catalyst comprises the steps of primary dipping, primary roasting, secondary dipping, secondary roasting, template removing, washing and drying, and the like. The mixed oxide with mesoporous structure formed by base metal manganese is used as the active component of the catalyst provided by the invention, the catalyst cost is greatly reduced, and the MnOx catalyst has good benzene series catalytic combustion activity at high reaction air speed (66,000mL.h<-1>.g<-1>) and low reaction temperature (503K), and has good low temperature benzene series catalytic combustion activity.

Description

technical field [0001] The invention relates to a catalyst for catalytic combustion of benzene series, in particular to a MnO catalyst used for catalytic elimination of benzene series in air x Catalyst and method for its preparation. Background technique [0002] Volatile organic compounds (Volatile Organic Compounds—VOCs) waste gas is one of the main substances that cause air pollution. Even at low concentrations, it can cause serious harm to the environment and humans. Benzene series in these VOCs (such as, Benzene, toluene, xylene, etc.) are more harmful. Benzene series mainly come from industrial waste gas, and are the most common pollutants emitted by industries such as steel manufacturing, semiconductor component production, petrochemical, pharmaceutical, printing, shoemaking, and painting. Due to the volatile nature of benzene series, toluene and xylene are often used in interior decoration materials instead of pure benzene as solvents or thinners for various glues,...

AI Technical Summary

Problems solved by technology

Mesoporous oxides have a large specific surface area and well-developed pore structure, which provides a material basis for the catalyst to have high catalytic activity. The research results of CO catalytic oxidation confirm that mesoporous oxide materials have high catalytic activity, but the mesoporous oxide materials will have high catalytic activity. The study of porous oxide materials for the catalytic elimination of benzene series has not been reported

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