Diffusion Coefficients of the Ternary System Calcium Chloride-Caffeine-Water at (25 and 37) °C

被引:10
|
作者
Ribeiro, A. C. F. [1 ]
Barros, M. C. F. [1 ]
Lobo, V. M. M. [1 ]
Quintanilla, Gloria [2 ]
Esteso, M. A. [3 ]
机构
[1] Univ Coimbra, Dept Chem, P-3004535 Coimbra, Portugal
[2] Univ Alcala de Henares, Fac Farm, Dept Quim Organ, Madrid 28871, Spain
[3] Univ Alcala de Henares, Fac Farm, Dept Quim Fis, Madrid 28871, Spain
来源
关键词
AQUEOUS-SOLUTIONS; BETA-CYCLODEXTRIN; BINARY; TEMPERATURES;
D O I
10.1021/je9005135
中图分类号
O414.1 [热力学];
学科分类号
摘要
Ternary mutual diffusion coefficients measured by the Taylor dispersion method are reported for aqueous solutions of CaCl2-caffeine at carrier concentrations from (0.0025 to 0.0500) mol.dm(-3) for each solute, respectively. The results are compared with those obtained for the binary systems H2O-CaCl2 and H2O-caffeine, also reported here. From these data, it is possible to make conclusions about the influence of the caffeine solutes in the diffusion of calcium chloride and to contribute to a better understanding of the structure of this system.
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页码:897 / 900
页数:4
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