Deep oxidation of methane on a Pt/Si3N4 catalyst

I. A. Kurzina, F. J. Cadete Santos Aires, J. C. Bertolini

    Результат исследования: Материалы для журналаСтатья

    2 Цитирования (Scopus)

    Аннотация

    We have studied platinum catalysts supported on silicon nitride Si 3N4 in the process of deep oxidation of methane. We have used transmission electron microscopy and X-ray photoelectron spectroscopy to study the surface properties of the Pt/Si3N4 samples before and after the catalytic reaction. We have established that the metallic platinum particles in freshly prepared systems are characterized by average sizes of 1.7-5.3 nm, while after the catalytic reaction we observe formation of Pt crystallites up to 30-70 nm in size. We hypothesize that the observed deactivation of platinum catalysts in deep oxidation of methane is connected with crystallization of the metallic particles and their entrainment with the reaction products during catalysis.

    Язык оригиналаАнглийский
    Страницы (с... по...)241-245
    Количество страниц5
    ЖурналTheoretical and Experimental Chemistry
    Том40
    Номер выпуска4
    DOI
    Статус публикацииОпубликовано - июл 2004

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    ASJC Scopus subject areas

    • Chemistry(all)

    Цитировать

    Kurzina, I. A., Cadete Santos Aires, F. J., & Bertolini, J. C. (2004). Deep oxidation of methane on a Pt/Si3N4 catalyst. Theoretical and Experimental Chemistry, 40(4), 241-245. https://doi.org/10.1023/B:THEC.0000041809.10564.dd