FORMATION OF THE SURFACE-CHARGE ON SILICA IN MIXED-SOLVENTS

被引:28
作者
KOSMULSKI, M [1 ]
MATIJEVIC, E [1 ]
机构
[1] CLARKSON UNIV, DEPT CHEM, POTSDAM, NY 13676 USA
关键词
MIXED SOLVENTS; NMR OF SILICA; SILICA; SURFACE CHARGE; ZETA POTENTIAL;
D O I
10.1007/BF00655975
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
At sufficiently high concentrations of methanol and of alkali salts in aqueous silica dispersions, the negative zeta-potentials of the particles are decreased. This effect is more pronounced with lithium than with other alkali cations, and it is independent on the anion. The NMR spectra indicate lithium adsorption on silica from mixed solvents, but not in the absence of alcohol.
引用
收藏
页码:1046 / 1048
页数:3
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