New magnesium cobalt iron double hydroxides with hydrotalcite structure: Synthesis and characterization

I. G. Ryl'Tsova, O. V. Nestroinaya, O. E. Lebedeva, O. A. Vorontsova, N. I. Kosova, I. A. Kurzina

    Результат исследований: Материалы для журналаСтатьярецензирование

    4 Цитирования (Scopus)

    Аннотация

    Series ol layered double hydroxides (LDHs) of the hydrotalcite family simultaneously containing iron and cobalt cations in the positions of triply charged metal ions of the brucite-like sheets, were prepared by coprecipitation of the components from solution in an oxidative medium. The materials prepared have been characterized by X-ray powder diffraction, temperature-programmed reduction (TPR), and temperature-programmed destruction (TPD); their behavior during dehydration-rehydration cycling was studied. The layered double hydroxides were shown to be reducible when heated in flowing hydrogen. Heating to 600°C induced the reduction of cobalt and iron to doubly charged cations, and at temperatures higher than 600°C the reduction yielded the metals. The thermal destruction products of the LDHs prepared are capable of recovering their layered structure when reacted with aqueous sodium carbonate solutions; however, this capability is reduced as the cobalt content in the sample increases.

    Язык оригиналаАнглийский
    Страницы (с-по)1403-1410
    Число страниц8
    ЖурналRussian Journal of Inorganic Chemistry
    Том59
    Номер выпуска12
    DOI
    СостояниеОпубликовано - 1 янв 2014

    ASJC Scopus subject areas

    • Inorganic Chemistry

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