Open AccessExperimental determination of destruction of thermally unstable substances
Author(s) -
Tamerlan A. Dzhapparov,
А. Р. Базаев
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1385/1/012029
Subject(s) - isothermal process , thermodynamics , thermal decomposition , decomposition , thermal expansion , aqueous solution , compressibility , chemistry , thermal , atmospheric temperature range , thermal stability , materials science , organic chemistry , physics
Different methods of thermal stability determinations are reviewed. The process of thermal decomposition of aliphatic alcohols and their aqueous mixtures in the range of temperatures 583.15–663.15 K was studied using the method of isothermal pressure increasing in a closed system. The decomposition points ( Td ) alcohols dissolved in water are obtained depending on their concentration. The changes of thermal coefficients (isothermal coefficient of compressibility kT , coefficient of cubical expansion α and thermal coefficient of pressure β ) and main thermodynamic properties ( C v , C p , H , S , U , F , G ) of studied mixtures depending on isothermal pressure increasing during the thermal decomposition of alcohols were calculated.