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Ozone Catalytic Oxidation of Gaseous Toluene over MnO2-Based Ozone Decomposition Catalysts Immobilized on a Nonwoven Fabric
Degradation of toluene gas by ozone catalytic oxidation (OZCO) by using a MnO 2 -based ozone decomposition catalyst (ODC) was investigated to clarify the reactive site of ODC material with O 3 . An optimum structure for the ODC to remove O 3 and toluene were proposed. For honeycomb ODC, toluene degr...
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Published in: | Aerosol and air quality research 2017, Vol.17 (8), p.2110-2118 |
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Main Authors: | , , , , , |
Format: | Article |
Language: | English |
Citations: | Items that cite this one |
Online Access: | Get full text |
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Summary: | Degradation of toluene gas by ozone catalytic oxidation (OZCO) by using a MnO
2
-based ozone decomposition catalyst (ODC) was investigated to clarify the reactive site of ODC material with O
3
. An optimum structure for the ODC to remove O
3
and toluene were proposed. For honeycomb ODC, toluene degradation by OZCO occurred only around the entrance of the honeycomb ODC, and we expected that a thinner ODC would increase the toluene degradation efficiency. A nonwoven fabric on which ODC was immobilized was developed to decompose O
3
and volatile organic compounds simultaneously. The toluene degradation ratio and the mineralization of toluene to CO
2
were determined to evaluate the performance of the fabric. Furthermore, the effects of relative humidity and O
3
concentration on the decomposition and mineralization ratios were also investigated with or without 254 nm UV irradiation (UV
254
). The fabric decomposed and mineralized toluene to CO
2
, even at low O
3
concentrations. Although high humidity reduced the degradation ratio of toluene, UV
254
irradiation improved the recovery of the degradation ratio and increased the mineralization ratio. |
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ISSN: | 1680-8584 2071-1409 |
DOI: | 10.4209/aaqr.2017.01.0045 |