A catalytic reactor for the trapping of free radicals from gas phase oxidation reactions

Marco Conte, Karen Wilson, Victor Chechik

Research output: Contribution to journalArticlepeer-review

Abstract

A catalytic reactor for the trapping of free radicals originating from gas phase catalytic reactions is described and discussed. Radical trapping and identification were initially carried out using a known radical generator such as dicumyl peroxide. The trapping of radicals was further demonstrated by investigating genuine radical oxidation processes, e. g., benzaldehyde oxidation over manganese and cobalt salts. The efficiency of the reactor was finally proven by the partial oxidation of cyclohexane over MoO3, Cr2O3, and WO3, which allowed the identification of all the radical intermediates responsible for the formation of the products cyclohexanol and cyclohexanone. Assignment of the trapped radicals was carried out using spin trapping technique and X-band electron paramagnetic resonance spectroscopy. (C) 2010 American Institute of Physics. [doi:10.1063/1.3492247]

Original languageEnglish
Article number104102
Pages (from-to)-
Number of pages7
JournalReview of Scientific Instruments
Volume81
Issue number10
DOIs
Publication statusPublished - Oct 2010

Keywords

  • ELECTRON-SPIN-RESONANCE
  • CYCLOHEXANE OXIDATION
  • BIOLOGICAL-SYSTEMS
  • PEROXYL RADICALS
  • CIGARETTE-SMOKE
  • SPECTRA
  • SPECTROSCOPY
  • TEMPERATURE
  • EXTRACTION
  • CHEMISTRY

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