| 초록 |
A microwave/UV/ozone/TiO2 photocatalysts hybrid process system, in which various techniques that have been used for propylene gas treatment are combined, is evaluated to develop an advanced technology to air pollutants efficiently. TiO2 photocatalyst balls used were prepared using a low pressure metal organic chemical vapor deposition. Microwave/UV/TiO2 photocatalyst hybrid process showed higher degradation efficiency than microwave/UV/alumina balls hybrid process. The degradation efficiency increased almost linearly with increasing ozone dose. The lower the propylene inlet concentration was the higher degradation efficiency. The double bond of propylene is broken by ozone and OH, resulting in production of CH4 and C2H6. These two intermediate products are mineralized into CO2, H2O, and CO. C2H4 and C3H8 are suggested to be produced from CH4, C2H6 and C3H6 by microwave. |
