Thermal decomposition of Prussian blue under inert atmosphere

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F12%3A33116607" target="_blank" >RIV/61989592:15310/12:33116607 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1007/s10973-011-1890-1" target="_blank" >http://dx.doi.org/10.1007/s10973-011-1890-1</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10973-011-1890-1" target="_blank" >10.1007/s10973-011-1890-1</a>

Result language
angličtina
Original language name
Thermal decomposition of Prussian blue under inert atmosphere
Original language description
The thermal decomposition of Prussian blue (iron(III) hexacyanoferrate) under inert atmosphere of argon was monitored by thermal analysis from room temperature up to 1000 C. X-ray powder diffraction and 57Fe Mossbauer spectroscopy were the techniques used for phase identification before and after sample heating. The decomposition reaction is based on a successive release of cyanide groups from the Prussian blue structure. Three principal stages were observed including dehydration, change of crystal structure of Prussian blue, and its decomposition. At 400 C, a monoclinic Prussian blue analogue was identified, while at higher temperatures the formation of various polymorphs of iron carbides was observed, including an orthorhombic Fe2C. Increase in the temperature above 700 C induced decomposition of primarily formed Fe7C3 and Fe2C iron carbides into cementite, metallic iron, and graphite. The overall decomposition reaction can be expressed as follows: Fe4[Fe(CN)6]3 4H2O + 4Fe ? Fe3C + 7
Czech name
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Czech description
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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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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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