Cobalt tetramethoxyphenyl porphyrin-emission Mossbauer spectroscopy and O2 reduction electrochemical studies

Daniel Alberto Scherson, S. L. Gupta, C. Fierro, E. B. Yeager, M. E. Kordesch, J. Eldridge, R. W. Hoffman, J. Blue

Research output: Contribution to journalArticle

127 Citations (Scopus)

Abstract

Cobalt tetramethoxyphenyl porphyrin (Co-TMPP) on a high area carbon support after thermal treatment at 450-900°C has been found to be an effective catalyst for O2 reduction in alkaline electrolytes. The effect of the heat treatment at 850°C on this catalyst has been examine with emission Mössbauer spectroscopy using Co-57 enriched Co-TMPP. The spectra indicate the presence of cobaltous oxides with no evidence of Co-N4 centers or any other form of cobalt. The metal-free complex H2TMPP, given similar thermal treatment on a mineral-free carbon support does not show catalytic activity beyond that of the carbon support, thus confirming the importance of the transition metal to the catalysis.

Original languageEnglish
Pages (from-to)1205-1209
Number of pages5
JournalElectrochimica Acta
Volume28
Issue number9
DOIs
Publication statusPublished - 1983 Jan 1
Externally publishedYes

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Porphyrins
Emission spectroscopy
Mossbauer spectroscopy
Cobalt
Carbon
Heat treatment
Catalyst supports
Catalysts
Oxides
Electrolytes
Catalysis
Transition metals
Minerals
Catalyst activity
Metals

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry

Cite this

Scherson, D. A., Gupta, S. L., Fierro, C., Yeager, E. B., Kordesch, M. E., Eldridge, J., ... Blue, J. (1983). Cobalt tetramethoxyphenyl porphyrin-emission Mossbauer spectroscopy and O2 reduction electrochemical studies. Electrochimica Acta, 28(9), 1205-1209. https://doi.org/10.1016/0013-4686(83)85006-3

Cobalt tetramethoxyphenyl porphyrin-emission Mossbauer spectroscopy and O2 reduction electrochemical studies. / Scherson, Daniel Alberto; Gupta, S. L.; Fierro, C.; Yeager, E. B.; Kordesch, M. E.; Eldridge, J.; Hoffman, R. W.; Blue, J.

In: Electrochimica Acta, Vol. 28, No. 9, 01.01.1983, p. 1205-1209.

Research output: Contribution to journalArticle

Scherson, DA, Gupta, SL, Fierro, C, Yeager, EB, Kordesch, ME, Eldridge, J, Hoffman, RW & Blue, J 1983, 'Cobalt tetramethoxyphenyl porphyrin-emission Mossbauer spectroscopy and O2 reduction electrochemical studies', Electrochimica Acta, vol. 28, no. 9, pp. 1205-1209. https://doi.org/10.1016/0013-4686(83)85006-3
Scherson, Daniel Alberto ; Gupta, S. L. ; Fierro, C. ; Yeager, E. B. ; Kordesch, M. E. ; Eldridge, J. ; Hoffman, R. W. ; Blue, J. / Cobalt tetramethoxyphenyl porphyrin-emission Mossbauer spectroscopy and O2 reduction electrochemical studies. In: Electrochimica Acta. 1983 ; Vol. 28, No. 9. pp. 1205-1209.
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