PHYSICOCHEMICAL CHARACTERISTICS OF MONODISPERSED CHROMIUM HYDROXIDE PARTICLES

被引：16

作者：

SPRYCHA, R ^{[1
]}

JABLONSKI, J ^{[1
]}

MATIJEVIC, E ^{[1
]}

机构：

[1] CLARKSON UNIV, CTR ADV MAT PROC, POTSDAM, NY 13699 USA

来源：

COLLOIDS AND SURFACES | 1992年 / 67卷

基金：

美国国家科学基金会;

关键词：

CHROMIUM HYDROXIDE; MECHANISM OF FORMATION; PRECIPITATION; ZETA-POTENTIAL;

D O I：

10.1016/0166-6622(92)80290-I

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 mechanism of the formation and growth of spherical amorphous chromium hydroxide particles of narrow size distribution by aging chrome alum solutions at elevated temperatures is described. Since the precipitation is controlled by the presence of the sulfate ion, the reaction was followed by monitoring the change in the concentrations of this anion using the sulfur-35 radioisotope and of the chromium ion by atomic absorption. The charges and zeta potentials of the particles, determined by potentiometric titration and electrophoretic measurements, showed that the particles behaved as rigid gels.

引用

页码：101 / 107

页数：7

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