Heat capacity of NaNO2

被引：12

作者：

Kourkova, L. ^{[1
]}

Svoboda, R. ^{[2
]}

Sadovska, G. ^{[1
]}

Podzemna, V. ^{[1
]}

Kohutova, A. ^{[1
]}

机构：

[1] Univ Pardubice, Dept Inorgan Technol, Fac Chem Technol, Pardubice, Czech Republic

[2] Univ Pardubice, Dept Phys Chem, Fac Chem Technol, Pardubice, Czech Republic

来源：

THERMOCHIMICA ACTA | 2009年 / 491卷 / 1-2期

关键词：

Sodium nitrite; Heat capacity; Enthalpy; Phase change materials; Calorimetry; DIFFERENTIAL SCANNING CALORIMETRY; PHASE-TRANSITIONS; SODIUM-NITRITE; X-RAY; ENTHALPY; CRYSTAL;

D O I：

10.1016/j.tca.2009.03.005

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Heat capacity in solid state was for the sodium nitrite (NaNO(2)) measured by using two types of calorimeters. The measurements were performed in the temperature range 273.15-583.15 K. Three phase changes were observed in this temperature range - one melting and two transitions between different structural modifications. Concerning the transitions between structural modifications, the first was observed at 437.2 +/- 0.1 K and the second was found at 438.7 +/- 0.1 K. Temperature of melting was then determined to be 553.2 +/- 0.2 K with the corresponding heat of fusion being equal to 13.9 +/- 0.1 kJ mol(-1). (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：80 / 83

页数：4

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