Effect of pyrolysis pressure on activity of Fe-N-C catalysts for oxygen reduction

Cenk Gumeci, Nathaniel Leonard, Yuanchao Liu, Samuel McKinney, Barr Halevi, Scott Calabrese Barton

    Research output: Contribution to journalArticle

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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.

    Original languageEnglish (US)
    Pages (from-to)21494-21500
    Number of pages7
    JournalJournal of Materials Chemistry A
    Volume3
    Issue number43
    DOIs
    StatePublished - 2015

    Profile

    Biogenic Amines
    Nitrogen
    Oxygen
    Melamine
    Pyrolysis
    Iron
    Catalysts
    Carbon
    Afferent Loop Syndrome
    Stainless steel
    Adsorption
    Gases
    Agglutination Tests

    ASJC Scopus subject areas

    • Chemistry(all)
    • Renewable Energy, Sustainability and the Environment
    • Materials Science(all)

    Cite this

    Effect of pyrolysis pressure on activity of Fe-N-C catalysts for oxygen reduction. / Gumeci, Cenk; Leonard, Nathaniel; Liu, Yuanchao; McKinney, Samuel; Halevi, Barr; Barton, Scott Calabrese.

    In: Journal of Materials Chemistry A, Vol. 3, No. 43, 2015, p. 21494-21500.

    Research output: Contribution to journalArticle

    Gumeci, C, Leonard, N, Liu, Y, McKinney, S, Halevi, B & Barton, SC 2015, 'Effect of pyrolysis pressure on activity of Fe-N-C catalysts for oxygen reduction' Journal of Materials Chemistry A, vol 3, no. 43, pp. 21494-21500. DOI: 10.1039/c5ta05995j
    Gumeci C, Leonard N, Liu Y, McKinney S, Halevi B, Barton SC. Effect of pyrolysis pressure on activity of Fe-N-C catalysts for oxygen reduction. Journal of Materials Chemistry A. 2015;3(43):21494-21500. Available from, DOI: 10.1039/c5ta05995j

    Gumeci, Cenk; Leonard, Nathaniel; Liu, Yuanchao; McKinney, Samuel; Halevi, Barr; Barton, Scott Calabrese / Effect of pyrolysis pressure on activity of Fe-N-C catalysts for oxygen reduction.

    In: Journal of Materials Chemistry A, Vol. 3, No. 43, 2015, p. 21494-21500.

    Research output: Contribution to journalArticle

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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.",
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    AU - Halevi,Barr

    AU - Barton,Scott Calabrese

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    AB - 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.

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