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Issue 43, 2015
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Effect of pyrolysis pressure on activity of Fe–N–C catalysts for oxygen reduction

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Abstract

Iron and nitrogen doped carbon, Fe–N–C, catalysts are synthesized by high pressure pyrolysis of Ketjenblack carbon, melamine and iron acetate precursor mixture in a closed, reusable scale-up stainless steel reactor. The effects of precursor loading with constant precursor ratios on obtained pressure, nitrogen retention and oxygen reduction reaction (ORR) activities are studied. The results indicate that higher precursor loading increases the gas phase pressure and improves nitrogen retention and ORR activity. Furthermore, a relationship is found between active site density, nitrogen retention and pressure that suggests that the limiting reaction may be an adsorption process driven via high pressure of volatile intermediates from the melamine.

Graphical abstract: Effect of pyrolysis pressure on activity of Fe–N–C catalysts for oxygen reduction

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Publication details

The article was received on 02 Aug 2015, accepted on 28 Sep 2015 and first published on 29 Sep 2015


Article type: Paper
DOI: 10.1039/C5TA05995J
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Citation: J. Mater. Chem. A, 2015,3, 21494-21500
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    Effect of pyrolysis pressure on activity of Fe–N–C catalysts for oxygen reduction

    C. Gumeci, N. Leonard, Y. Liu, S. McKinney, B. Halevi and S. C. Barton, J. Mater. Chem. A, 2015, 3, 21494
    DOI: 10.1039/C5TA05995J

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