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Mechanism of solid-state oxidation of FeSO4.H2O: model of simultaneous reactions

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F01%3A00001393" target="_blank" >RIV/61989592:15310/01:00001393 - isvavai.cz</a>

  • Alternative codes found

    RIV/61989592:15310/01:00001394 RIV/61989592:15310/01:00007754

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Mechanism of solid-state oxidation of FeSO4.H2O: model of simultaneous reactions

  • Original language description

    The mechanism of the thermal transformation of FeSO4×H2O in air has been studied under isothermal conditions at temperatures 150-460 oC mainly using 57Fe Mössbauer spectroscopy and x-ray powder diffraction (XRD). Two trends are typical for the thermal behaviour of FeSO4×H2O in air, a tendency to oxidation and dehydration. We proposed a new transformation model consisting of two ways of oxidation, direct and indirect. Fe(OH)SO4 was identified as a product of the direct way, Fe2(SO4)3 and superparamagnetic nanoparticles of g-Fe2O3 as products of the indirect way. The proposed model of simultaneous reactions explains the unusual non-monotonous dependence of the oxidation level of the thermally treated samples on temperature.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    CF - Physical chemistry and theoretical chemistry

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/ME%20351" target="_blank" >ME 351: Mössbauer Study of Nanostructured Fe-O Particles</a><br>

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2001

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Czechoslovak Journal of Physics

  • ISSN

    0011-4626

  • e-ISSN

  • Volume of the periodical

    51

  • Issue of the periodical within the volume

    7

  • Country of publishing house

    CZ - CZECH REPUBLIC

  • Number of pages

    8

  • Pages from-to

    719-726

  • UT code for WoS article

  • EID of the result in the Scopus database