Investigation of alkali carbonate transport toward the catalyst in internal reforming MCFCs

R.J. Berger, R.J. Berger, E.B.M. Doesburg, E.B.M. Doesburg, J.G. van Ommen, J.R.H. Ross

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Abstract

A nickel catalyst to be used for internal steam reforming in a molten carbonate fuel cell (MCFC) must be resistant to the alkali components (Li and K species) of the electrolyte; these components can reach the catalyst from the anode by either transport via the vapor phase or by means of surface creep along the walls. In a series of experiments for determining the rates of transport, it was found that the amount of alkali transported by creep along a metallic wall (Au or Ni) was much smaller than that transported via the vapor phase. The vapor transport occurred by the formation of the alkali hydroxides. The vapor pressure of LiOH was found to be eight times larger than that calculated from thermodynamic data. All the Al-containing materials tested strongly took up alkali from the gas phase. The catalysts Ni/MgO and Ni/SiO2 sintered strongly during exposure to gaseous LiOH and KOH.
Original languageUndefined
Pages (from-to)3186-3191
Number of pages5
JournalJournal of the Electrochemical Society
Volume143
Issue number10
DOIs
Publication statusPublished - 1997

Keywords

  • IR-61622
  • METIS-105550

Cite this

Berger, R. J., Berger, R. J., Doesburg, E. B. M., Doesburg, E. B. M., van Ommen, J. G., & Ross, J. R. H. (1997). Investigation of alkali carbonate transport toward the catalyst in internal reforming MCFCs. Journal of the Electrochemical Society, 143(10), 3186-3191. https://doi.org/10.1149/1.1837185
Berger, R.J. ; Berger, R.J. ; Doesburg, E.B.M. ; Doesburg, E.B.M. ; van Ommen, J.G. ; Ross, J.R.H. / Investigation of alkali carbonate transport toward the catalyst in internal reforming MCFCs. In: Journal of the Electrochemical Society. 1997 ; Vol. 143, No. 10. pp. 3186-3191.
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abstract = "A nickel catalyst to be used for internal steam reforming in a molten carbonate fuel cell (MCFC) must be resistant to the alkali components (Li and K species) of the electrolyte; these components can reach the catalyst from the anode by either transport via the vapor phase or by means of surface creep along the walls. In a series of experiments for determining the rates of transport, it was found that the amount of alkali transported by creep along a metallic wall (Au or Ni) was much smaller than that transported via the vapor phase. The vapor transport occurred by the formation of the alkali hydroxides. The vapor pressure of LiOH was found to be eight times larger than that calculated from thermodynamic data. All the Al-containing materials tested strongly took up alkali from the gas phase. The catalysts Ni/MgO and Ni/SiO2 sintered strongly during exposure to gaseous LiOH and KOH.",
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Berger, RJ, Berger, RJ, Doesburg, EBM, Doesburg, EBM, van Ommen, JG & Ross, JRH 1997, 'Investigation of alkali carbonate transport toward the catalyst in internal reforming MCFCs', Journal of the Electrochemical Society, vol. 143, no. 10, pp. 3186-3191. https://doi.org/10.1149/1.1837185

Investigation of alkali carbonate transport toward the catalyst in internal reforming MCFCs. / Berger, R.J.; Berger, R.J.; Doesburg, E.B.M.; Doesburg, E.B.M.; van Ommen, J.G.; Ross, J.R.H.

In: Journal of the Electrochemical Society, Vol. 143, No. 10, 1997, p. 3186-3191.

Research output: Contribution to journalArticleAcademicpeer-review

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T1 - Investigation of alkali carbonate transport toward the catalyst in internal reforming MCFCs

AU - Berger, R.J.

AU - Berger, R.J.

AU - Doesburg, E.B.M.

AU - Doesburg, E.B.M.

AU - van Ommen, J.G.

AU - Ross, J.R.H.

PY - 1997

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AB - A nickel catalyst to be used for internal steam reforming in a molten carbonate fuel cell (MCFC) must be resistant to the alkali components (Li and K species) of the electrolyte; these components can reach the catalyst from the anode by either transport via the vapor phase or by means of surface creep along the walls. In a series of experiments for determining the rates of transport, it was found that the amount of alkali transported by creep along a metallic wall (Au or Ni) was much smaller than that transported via the vapor phase. The vapor transport occurred by the formation of the alkali hydroxides. The vapor pressure of LiOH was found to be eight times larger than that calculated from thermodynamic data. All the Al-containing materials tested strongly took up alkali from the gas phase. The catalysts Ni/MgO and Ni/SiO2 sintered strongly during exposure to gaseous LiOH and KOH.

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