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
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DOI - Digital Object Identifier
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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
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Czech description
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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
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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
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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
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EID of the result in the Scopus database
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