Studies on ζ-Potential of Positive Sol of Magnesium Aluminum Hydroxide

高等学校化学研究 ›› 1999, Vol. 15 ›› Issue (1): 58-62.

Studies on ζ-Potential of Positive Sol of Magnesium Aluminum Hydroxide

HAN Shu-hua, HOU Wan-guo, DONG Qian, SUN De-jun, HUANG Xi-rong, ZHANG Chun-guang

Key Laboratory for Colloid, Interface Chemistry of State Education Commission, Institute of Colloid, Interface Chemistry, Shandong University, Jinan, 250100

收稿日期:1998-02-25 出版日期:1999-01-24 发布日期:2011-08-17
通讯作者: HAN Shu-hua
基金资助:
Supported by the National Natural Science Foundation of Shangdong Province and the Youth Science Foundation of Shandong University .

Studies on ζ-Potential of Positive Sol of Magnesium Aluminum Hydroxide

HAN Shu-hua, HOU Wan-guo, DONG Qian, SUN De-jun, HUANG Xi-rong, ZHANG Chun-guang

Key Laboratory for Colloid, Interface Chemistry of State Education Commission, Institute of Colloid, Interface Chemistry, Shandong University, Jinan, 250100

Received:1998-02-25 Online:1999-01-24 Published:2011-08-17
Supported by:
Supported by the National Natural Science Foundation of Shangdong Province and the Youth Science Foundation of Shandong University .

摘要/Abstract

摘要： The IEP of magnesium aluminum hydroxide was predicted with the modified Yoon's equation, and the effect of electrolyte on the ζ-potential of the sol was studied by electrophoresis method. The results showed that the calculated IEP values with the modified Yoon's equation agreed well with the experimental ones. With the increase of the ionic radius of monovalent anions (Cl^-, Br^-, I^-) the ζ-potential decreased. The same was true for CO₃^2-, SO₄^2- but the sign of the ζ-potential reversed from positive to negative. For Al³⁺, Ca²⁺, Mg²⁺, however, the ζ-potential increased with the increase of the concentration of Al³⁺, Ca²⁺, Mg²⁺.

关键词: &zeta, -Potential, Isoelectric point, Magnesium aluminum hydroxide, Prediction

Abstract: The IEP of magnesium aluminum hydroxide was predicted with the modified Yoon's equation, and the effect of electrolyte on the ζ-potential of the sol was studied by electrophoresis method. The results showed that the calculated IEP values with the modified Yoon's equation agreed well with the experimental ones. With the increase of the ionic radius of monovalent anions (Cl^-, Br^-, I^-) the ζ-potential decreased. The same was true for CO₃^2-, SO₄^2- but the sign of the ζ-potential reversed from positive to negative. For Al³⁺, Ca²⁺, Mg²⁺, however, the ζ-potential increased with the increase of the concentration of Al³⁺, Ca²⁺, Mg²⁺.

Key words: ζ-Potential, Isoelectric point, Magnesium aluminum hydroxide, Prediction

HAN Shu-hua, HOU Wan-guo, DONG Qian, SUN De-jun, HUANG Xi-rong, ZHANG Chun-guang . Studies on ζ-Potential of Positive Sol of Magnesium Aluminum Hydroxide[J]. 高等学校化学研究, 1999, 15(1): 58-62.

HAN Shu-hua, HOU Wan-guo, DONG Qian, SUN De-jun, HUANG Xi-rong, ZHANG Chun-guang . Studies on ζ-Potential of Positive Sol of Magnesium Aluminum Hydroxide[J]. Chemical Research in Chinese Universities, 1999, 15(1): 58-62.

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Studies on ζ-Potential of Positive Sol of Magnesium Aluminum Hydroxide

Studies on ζ-Potential of Positive Sol of Magnesium Aluminum Hydroxide

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