Effect of the salting-out agent anion nature on the phase separation of a potassium salt–potassium bis(alkyl polyoxyethylene)phosphate–water systems
- 作者: Elokhov A.1, Lesnov A.1, Kudryashova O.2
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隶属关系:
- Institute of Technical Chemistry, Ural Branch
- Institute of Natural Science
- 期: 卷 90, 编号 10 (2016)
- 页面: 1972-1977
- 栏目: Physical Chemistry of Solutions
- URL: https://journals.rcsi.science/0036-0244/article/view/168832
- DOI: https://doi.org/10.1134/S0036024416100101
- ID: 168832
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详细
The effect the salting-out agent anion nature has on the temperature and concentration intervals of the existence of the separation area is established by analyzing the phase diagrams of pseudoternary KCl (KBr, KI, KNO3, K2SO4, K4P2O7)–potassium bis(alkyl polyoxyethylene)phosphate (oxyphos B)–water systems. It is concluded that the anionic salting-out capability is reduced in the order P2O74-> SO42-> Cl− > Br‒> NO74-> SO3-> I−. The thermodynamic parameters of phase separation used to interpret the results are calculated. The observed pattern of a change in the salting-out ability of the investigated salts relative to aqueous solutions of the surfactants is in good agreement with the lyotropic (Hofmeister) series.
作者简介
A. Elokhov
Institute of Technical Chemistry, Ural Branch
编辑信件的主要联系方式.
Email: elhalex@yandex.ru
俄罗斯联邦, Perm, 614013
A. Lesnov
Institute of Technical Chemistry, Ural Branch
Email: elhalex@yandex.ru
俄罗斯联邦, Perm, 614013
O. Kudryashova
Institute of Natural Science
Email: elhalex@yandex.ru
俄罗斯联邦, Perm, 614990