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Manganese-Based Catalysts Supported on Titania for the Oxidation of Nitric Oxide

Hua Li, Xiaolong Tang, Honghong Yi, Lili Yu

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Abstract

Manganese-based catalysts supported on TiO2were studied for the oxidation of NO to NO2in excess oxygen to remove NO from flue gas. Catalysts were prepared by incipient impregnation, excessive dipping and ultrasonic improved impregnation. The effects of precursor, manganese loadings, preparation method of catalysts and calcination temperature of catalysts on NO oxidation were investigated in details. Mn/TiO2-10% catalysts made from Mn(NO3)2and prepared by excessive dipping had the highest NO oxidation. More than 60% NO conversion was obtained at 200degC under the condition of 500 ppm NO, 3% O2and the balance N2, GHSV=19,200 h-1.

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What this paper is about

Manganese-based catalysts supported on TiO2were studied for the oxidation of NO to NO2in excess oxygen to remove NO from flue gas. Catalysts were prepared by incipient impregnation, excessive dipping and ultrasonic improved impregnation. The effects of precursor, manganese loadings, preparation method of catalysts and calcination temperature of catalysts on NO oxidation were investigated in details. Mn/TiO2-10% catalysts made from Mn(NO3)2and prepared by excessive dipping had the highest NO oxidation. More than 60% NO conversion was obtained at 200degC under the condition of 500 ppm NO, 3% O2and the balance N2, GHSV=19,200 h-1.

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Available abstract

Manganese-based catalysts supported on TiO2were studied for the oxidation of NO to NO2in excess oxygen to remove NO from flue gas. Catalysts were prepared by incipient impregnation, excessive dipping and ultrasonic improved impregnation. The effects of precursor, manganese loadings, preparation method of catalysts and calcination temperature of catalysts on NO oxidation were investigated in details. Mn/TiO2-10% catalysts made from Mn(NO3)2and prepared by excessive dipping had the highest NO oxidation. More than 60% NO conversion was obtained at 200degC under the condition of 500 ppm NO, 3% O2and the balance N2, GHSV=19,200 h-1.

Key concepts: Catalysis, Materials science, Chemistry, Organic chemistry

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