CH4/CO2 reforming over La2NiO4 and 10%NiO/CeO2-La2O3 catalysts under the condition of supersonic jet expansion via cavity ring-down spectroscopic analysis

L. Li, B. S. Liu*, J. W.H. Leung, Chak Tong AU, A. S.C. Cheung

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

CH4/CO2 reforming over La2NiO4 and 10%NiO/CeO2-La2O3 catalysts under the condition of supersonic jet expansion was studied via direct monitoring of the reactants and products using the sensitive technique of cavity ring-down spectroscopy. Vibration-rotational absorption lines of CH4, H2O, CO2 and CO molecules were recorded in the near infrared spectral region. Our results indicated that La2NiO4 is superior to 10%NiO/CeO2-La2O3 in performance. In addition, we observed enhanced reverse-water-gas-shift reaction at augmented reaction temperature. The formation of reaction intermediates was also investigated by means of time-of-flight mass spectrometry and there was the detection of CHx+, OH+ and H+ species.

Original languageEnglish
Pages (from-to)533-540
Number of pages8
JournalCatalysis Today
Volume131
Issue number1-4
DOIs
Publication statusPublished - 29 Feb 2008

Scopus Subject Areas

  • Catalysis
  • Chemistry(all)

User-Defined Keywords

  • Carbon deposition
  • Cavity ring-down spectroscopy
  • CH/CO reforming
  • Supersonic jet expansion
  • TOF-MS
  • Vibration-rotational spectra

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