The role of intermediates in the process of red ferric pigment manufacture from FeSO4 center dot 7H(2)O
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F02%3A00001692" target="_blank" >RIV/61989592:15310/02:00001692 - isvavai.cz</a>
Alternative codes found
RIV/61989592:15310/02:00007752
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
The role of intermediates in the process of red ferric pigment manufacture from FeSO4 center dot 7H(2)O
Original language description
One method of industrial manufacture of red ferric pigments is based on the thermal decomposition of FeSO4.7H(2)O into alpha Fe2O3(copperas red). The difficult reproducibility of the color quality of the final pigment is the main problem of this process.One of the factors that can influence the pigment color is contamination by some of the intermediates formed during the transformation process. The identification of two groups of intermediates is the basic result of an extensive laboratory investigation carried out using Fe-57 Mossbauer spectroscopy and X-ray powder diffraction (XRD). The first group of intermediates includes sulfato-phases as FeSO4.H2O, FeSO4, Fe(OH) SO4, Fe2O(SO4)(2), Fe2O(SO4)(2).xH(2)O xis an element of(0, 1), and Fe-2(SO4)(3). Thermally metastable polymorphs of iron(III) oxide, beta-Fe2O3, gamma-Fe2O3 and epsilon-Fe2O3, represent the other group. Mossbauer characterization of all intermediate products is given. A significant influence of beta-Fe2O3 on the pigment
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
2002
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Hyperfine Interactions
ISSN
0304-3843
e-ISSN
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Volume of the periodical
139/140
Issue of the periodical within the volume
N
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
9
Pages from-to
437-445
UT code for WoS article
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EID of the result in the Scopus database
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