Heat capacity and entropy of rutile (TiO2) and nepheline (NaAlSiO4)

被引：40
作者：
de Ligny, D
Richet, P
Westrum, EF
Roux, J
机构：
[1] Inst Phys Globe, CNRS, UMR 7046, Lab Phys Geomat, F-75252 Paris 05, France
[2] Univ Michigan, Dept Chem, Ann Arbor, MI 48109 USA
[3] Inst Sci Terre Orleans, F-45071 Orleans 2, France
来源：
PHYSICS AND CHEMISTRY OF MINERALS | 2002年 / 29卷 / 04期
关键词：
rutile; nepheline; heat capacity; entropy;
D O I：
10.1007/s00269-001-0229-z
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
From heat capacities measured adiabatically at low temperatures, the standard entropies at 298.15 K of synthetic rutile (TiO2) and nepheline (NaAlSiO4) have been determined to be 50.0 +/- 0.1 and 122.8 +/- 0.3 J mol(-1) K, respectively. These values agree with previous measurements and in particular confirm the higher entropy of nepheline with respect to that of the less dense NaAlSiO4 polymorph carnegieite.
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收藏
页码：267 / 272
页数：6
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