Selective photocatalytic oxidation of cyclohexanol to cyclohexanone: A spectroscopic and kinetic study

M.R. Karimi Estahbanati, Mehrzad Feilizadeh, Alexandre Babin, Bastian Timo Mei, Guido Mul*, Maria C. Iliuta

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

3 Citations (Scopus)
1 Downloads (Pure)

Abstract

In this work, spectroscopic and kinetic studies were performed on photocatalytic oxidation of cyclohexanol to cyclohexanone. The photocatalytic experiments were performed according to a three-level full factorial design and the rate of cyclohexanone production was determined by HPLC analysis. In situ ATR-FTIR analysis of the photocatalytic reaction revealed that cyclohexanol can be selectively converted to cyclohexanone, without the formation of significant amounts of carbonates and carboxylates. A reaction mechanism based on different steps from charge separation to cyclohexanone molecule formation is proposed. The results were utilized to determine the kinetic parameters (with the help of genetic algorithm) and validate the model. The developed kinetic model illustrates that the rate of cyclohexanone production increases as a power function with respect to the light intensity and decreases as an exponential function with respect to time. An excellent selectivity of cyclohexanone was confirmed by spectroscopic and chromatographic studies. This study demonstrates that photocatalysis can be a promising technology for formation of cyclohexanone from cyclohexanol.
Original languageEnglish
Article number122732
JournalChemical Engineering Science: X
Volume382
Early online date6 Sep 2019
DOIs
Publication statusPublished - 15 Feb 2020

Keywords

  • UT-Hybrid-D
  • Cyclohexanone
  • ATR-FTIR
  • Kinetic model
  • Spectroscopy
  • Photocatalysis

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