Catalytic oxidation of acetaldehydes in indoor air using UVC and Mn/TiO2 honeycomb-catalyst

Catalytic oxidation of acetaldehydes in indoor air using UVC and Mn/TiO2 honeycomb-catalyst
Catalytic oxidation; acetaldehydes; indoor air; Mn/TiO2
Issue Date
Proceedings of the 7th Asian Conference on Refrigeration and Air Conditioning
The effects on Mn loading on the catalytic oxidation of acetaldehyde—a common indoor air pollutant—in the presence of other common indoor air pollutants. The present investigation showed that the efficiency of resolving the acetaldehydes was improved by catalytic oxidation under room temperature condition. Thus catalytic oxidation, which oxidizes pollutants to Cox, was shown to be a promising and effective technology for pollution control. Catalytic oxidation of acetaldehydes with ozone was carried out over TiO2-supported manganese oxides. Both the manganese oxide species were active for acetaldehydes oxidation with ozone, the former species showed slightly higher activities. TiO2-nanoparticle was prepared by an elsewhere described CVC process. First, TiO2-supported manganese oxides were prepared by impregnation and then were coated on a honeycomb structure. Here, the oxidation behavior of acetaldehydes with ozone on TiO2-supported manganese oxide honeycomb-catalyst is reported. The synthesized TiO2-supported Mn catalyst was more efficient than commercial catalyst (P25) supported material in decomposing acetaldehyde. Therefore, synthesized TiO2-supported Mn was used as the most prospective catalysts for removing trace acetaldehydes and high catalytic activity in the presence of ozone.
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