Calorimetric investigation of chemical additives affecting oxidation of coal at low temperatures

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F11%3AA11010BE" target="_blank" >RIV/61988987:17310/11:A11010BE - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Calorimetric investigation of chemical additives affecting oxidation of coal at low temperatures
Original language description
Interactions in the system ?coal - chemical additive - oxygen? were studied at temperature 30°C with the aim to recognise inhibitors of coal oxidation process that are able to modify coal surface in chemical way. Three coals of different rank were tested. As possible inhibitors, 14 aqueous solutions (10 wt%) of both inorganic (chlorides, sulphates, nitrates, phosphates, sulphites) and organic (formates, acetates, urea, thiourea) substances were examined. Action of additives on coal was evaluated from heat effect during immersion of the coal in the additive solution. It was found that the most of the studied substances proved immersing heats quite comparable with that of pure water. However, rather chemical action was ascertained for sodium sulphite, phenol, urea and/or thiourea with heat effects several times exceeding heats for pure water.
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)

Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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