Инд. авторы:	Drebushchak V.A., Ogienko A.G.
Заглавие:	Calorimetric measurements of sodium chloride dihydrate (hydrohalite)
Библ. ссылка:	Drebushchak V.A., Ogienko A.G. Calorimetric measurements of sodium chloride dihydrate (hydrohalite) // Journal of Thermal Analysis and Calorimetry. - 2019. - ISSN 1388-6150. - EISSN 1572-8943.
Внешние системы:	DOI: 10.1007/s10973-019-08954-7; РИНЦ: 41697140; РИНЦ: 43210682; SCOPUS: 2-s2.0-85074753991; WoS: 000493961500005;
Реферат:	eng: Calorimetric measurements of sodium chloride dihydrate NaCl center dot 2H(2)O (mineral name hydrohalite) were carried out with using DSC. Heat capacity from 190 to 250 K was measured and found to increase from 109 to 137 J mol(-1) K-1. The enthalpy of formation of hydrohalite from solid ice and halite at 273.15 K was derived from the thermal effect of melting/decomposition in DSC measurements and found to be close to - 1.8 kJ mol(-1). The same DSC results show clearly that the upper temperature limit for the existence of hydrohalite is several degrees greater than the current value of 273.15 K accepted for the peritectic decomposition of hydrohalite. The phase diagram of the NaCl-H2O system needs correction.
Ключевые слова:	SEA-ICE; THERMODYNAMIC PROPERTIES; THERMAL-ENERGY STORAGE; SYSTEM; Heat capacity; Enthalpy of formation; DSC; Hydrohalite; PHASE;
Издано:	2019