In situ diffuse reflectance FT-IR studies of TiO2and Pt/TiO 2in photo-oxidation of benzene and ethylene

Hisahiro Einaga, Yasutake Teraoka

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4 Citations (Scopus)

Abstract

In situ diffuse reflectance FT-IR measurements were carried out to investigate the formation and decomposition behavior of by-product compounds on TiO2and Pt/TiO2catalyst surfaces during the photo-oxidation of benzene and ethylene. In the benzene photo-oxidation ([benzene] = 100 ppm) without water vapor, TiO2catalyst was readily covered with oxygen-containing by-product compounds, which were decomposed by photoirradiation in the presence of water vapor ([H2O] = 0.17%) with an induction period. Pt deposition slightly increased the rate for their decomposition. In the ethylene photo-oxidation ([ethylene] = 400 ppm) without water vapor, oxygen-containing by-product compounds were also formed, which were readily decomposed by photoirradiation in the presence of water vapor without induction period. Pt deposition on TiO2surface had no significant effect on the photo-oxidation processes.

Original languageEnglish
Pages (from-to)617-628
Number of pages12
JournalResearch on Chemical Intermediates
Volume34
Issue number5-7
DOIs
Publication statusPublished - May 1 2008

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

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