Study on Hydration of Illite in K+, Na+, Ca2+, Mg2+, and Al3+ Electrolyte Solutions

被引:9
作者
Du, Jia [1 ,2 ]
Min, Fanfei [1 ]
Zhang, Mingxu [1 ]
Peng, Chenliang [3 ]
机构
[1] Anhui Univ Sci & Technol, Dept Mat Sci & Engn, Huainan 232001, Peoples R China
[2] Xinjiang Inst Engn, Dept Min Engn & Geol, Urumqi 830000, Xinjiang, Peoples R China
[3] Jiangxi Univ Sci & Technol, Inst Engn & Res, Ganzhou 341000, Peoples R China
来源
ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS | 2019年 / 233卷 / 05期
关键词
cation; hydration; illite; relative viscosity; MICA SURFACES; FORCES; MONTMORILLONITE; SPECIATION; KAOLINITE; STABILITY; LAYERS; WATER;
D O I
10.1515/zpch-2018-1239
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 hydration of clay particles in aqueous solutions plays an important role in the scientific and industrial fields. In this study, the hydration properties of fine illite particles in K+, Na+, Ca2+, Mg2+, and Al3+ electrolyte solutions were investigated through the relative viscosity method based on Einstein's viscosity equation. During the experiments, the hydration index (I) was measured using a rheometer to analyze the hydration layers formed on the illite surfaces in different aqueous electrolyte solutions, and it was found that the index I was the highest in Al3+ followed by that in Mg2+, Ca2+, Na2+, and K+ in descending order. It was also observed that the index increased as the electrolyte concentration increased until the solution reached an adsorption equilibrium. When electrolytes were added, the effect of electroviscosity on the calculated value of I became weaker until it could eventually be neglected. Based on these results, we concluded that the electroviscosity should be considered when calculating the hydration index of a suspension of fine charged particles with low conductivity.
引用
收藏
页码:721 / 735
页数:15
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