Coefficients of caffeine distribution in aliphatic alcohol-ammonium sulfate-water systems

被引：2
作者：
Korenman, Ya. I. [1 ]
Krivosheeva, O. A. [1 ]
Mokshina, N. Ya. [2 ]
机构：
[1] Voronezh State Univ Engn Technol, Voronezh 394006, Russia
[2] Voronezh Aviat Engn Univ, Voronezh 394064, Russia
来源：
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A | 2012年 / 86卷 / 11期
关键词：
partition coefficients; caffeine extraction; aliphatic alcohols; aqueous solutions;
D O I：
10.1134/S0036024412110167
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The extraction of caffeine with aliphatic alcohols C-3-C-9 from aqueous solutions in the presence of a salting-out agent (ammonium sulfate) is studied. Quantitative characteristics of extraction are calculated: the distribution coefficients (D) and the degree of recovery (R, %). Relations are found between logD of caffeine and the length of the hydrocarbon radical in the alcohol molecule, along with certain physicochemical properties of the extragents.
引用
收藏
页码：1676 / 1678
页数：3
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