Heterogeneous photocatalytic oxidation of benzene, toluene, cyclohexene and cyclohexane in humidified air: Comparison of decomposition behavior on photoirradiated TiO2 catalyst

Hisahiro Einaga, Shigeru Futamura, Takashi Ibusuki

Research output: Contribution to journalArticle

252 Citations (Scopus)

Abstract

Gas-solid heterogeneous photocatalytic decomposition of benzene, toluene, cyclohexane and cyclohexene over TiO2 was studied at room temperature, and their reactivities were compared. Catalyst deactivation was ascribed to the formation of the carbon deposits on TiO2 surface, and the formation and decomposition behavior of the carbon deposits affected the decomposition rate. Deactivated TiO2 catalysts were photochemically regenerated in the presence of water vapor, and the carbon deposits were decomposed to COx.

Original languageEnglish
Pages (from-to)215-225
Number of pages11
JournalApplied Catalysis B: Environmental
Volume38
Issue number3
DOIs
Publication statusPublished - Jun 29 2002
Externally publishedYes

Fingerprint

Toluene
Cyclohexane
Benzene
toluene
benzene
Carbon
Deposits
catalyst
decomposition
Decomposition
oxidation
Oxidation
Catalysts
carbon
air
Air
Catalyst deactivation
Steam
Water vapor
water vapor

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Environmental Science(all)
  • Process Chemistry and Technology

Cite this

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AU - Einaga, Hisahiro

AU - Futamura, Shigeru

AU - Ibusuki, Takashi

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AB - Gas-solid heterogeneous photocatalytic decomposition of benzene, toluene, cyclohexane and cyclohexene over TiO2 was studied at room temperature, and their reactivities were compared. Catalyst deactivation was ascribed to the formation of the carbon deposits on TiO2 surface, and the formation and decomposition behavior of the carbon deposits affected the decomposition rate. Deactivated TiO2 catalysts were photochemically regenerated in the presence of water vapor, and the carbon deposits were decomposed to COx.

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