Photocatalytic oxidation processes for toluene oxidation over TiO2 catalysts

Hisahiro Einaga, Keisuke Mochiduki, Yasutake Teraoka

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Gas-solid heterogeneous photooxidation of toluene over TiO2 catalyst was studied to investigate the factors controlling the catalytic activities. The toluene photooxidation behavior on TiO2 was strongly affected by the formation and oxidation behavior of intermediate compounds on TiO2, and their accumulation decreased the reaction rate for toluene photooxidation. The formation and oxidation behavior of the byproduct compounds depended on the initial concentration of toluene and water vapor. In situ Fourier transform infrared (FTIR) studies revealed that water vapor promoted the cleavage of the aromatic ring and facilitated CO2 formation. At the reaction temperature of 300 K, the deposition of Pt on TiO2 suppressed CO formation, whereas catalytic activity was decreased due to the increase in the amount of intermediate compounds. On the other hand, Pt/TiO2 showed higher activity than TiO2 at 353 K, in spite of the increase of the intermediate compounds.

Original languageEnglish
Pages (from-to)219-231
Number of pages13
JournalCatalysts
Volume3
Issue number1
DOIs
Publication statusPublished - Mar 4 2013

Fingerprint

Toluene
Photooxidation
toluene
photooxidation
catalysts
Oxidation
oxidation
Catalysts
Steam
Water vapor
water vapor
catalytic activity
Catalyst activity
Carbon Monoxide
Reaction rates
Byproducts
cleavage
Fourier transforms
reaction kinetics
Gases

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Catalysis

Cite this

Photocatalytic oxidation processes for toluene oxidation over TiO2 catalysts. / Einaga, Hisahiro; Mochiduki, Keisuke; Teraoka, Yasutake.

In: Catalysts, Vol. 3, No. 1, 04.03.2013, p. 219-231.

Research output: Contribution to journalArticle

Einaga, Hisahiro ; Mochiduki, Keisuke ; Teraoka, Yasutake. / Photocatalytic oxidation processes for toluene oxidation over TiO2 catalysts. In: Catalysts. 2013 ; Vol. 3, No. 1. pp. 219-231.
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