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The Photodecomposition of Acetaldehyde in Gas Phase Using Immobilized TiO2 on Porous α-Al2O3 Tube
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Seoung Min Cho
Published/Copyright:
November 30, 2016
Abstracts
A study on the photocatalytic degradation of acetaldehyde using immobilized TiO2 on porous α- Al2O3 tube was performed. Among various TiO2-immobilization methods such as a sol-gel and a suspension coating, suspension coating method (method B) showed the highest photodecomposition rate of acetaldehyde, and the most effective coating thickness of TiO2 layer in method B was about 10 μm. Apparently, all reactions followed 1st order kinetics and the temperature did not affect the photodecomposition of acetaldehyde in the range of 25 ~ 70 °C. As far as oxidants were concerned, O2 revealed a positive effect on the photooxidation, but H2O behaved in a opposite way. Platinum loading on immobilized TiO2 on Al2O3 tube by using photoreduction enhanced the photocatalytic reaction rate of acetaldehyde.
Published Online: 2016-11-30
Published in Print: 2002-7-1
© 2016 by Walter de Gruyter Berlin/Boston
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