New batch cells adapted to measure saturated heat capacities of liquids

被引:53
作者
Páramo, R
Zouine, M
Casanova, C [1 ]
机构
[1] Univ Valladolid, Dept Termodinam & Fis Aplicada, Valladolid 47005, Spain
[2] Univ Meknes, Ecole Natl Agr, Dept Sci Base, Meknes, Morocco
关键词
D O I
10.1021/je0155103
中图分类号
O414.1 [热力学];
学科分类号
摘要
New "batch" cells adapted to measure saturated heat capacities with a Micro DSC II (Setaram) microcalorimeter designed to avoid any leakage during measurement are described. Using the "scanning" and "step-by-step" methods, the heat capacities of pure organic liquids-hexane, heptane, decane, dodecane, cyclohexane, toluene, methanol, and 1-butanol-in the temperature range (5 to 75) degreesC were determined. In addition, the excess heat capacities of several binary liquid mixtures-(benzene + cyclohexane) and (2,5,8,11-tetraoxadodecane + dodecane)-with the step-by-step procedure were measured. A very close agreement with literature values better than 1% indicates that the apparatus and technique are suitable for heat capacity measurements on volatile liquids.
引用
收藏
页码:441 / 448
页数:8
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