ANIONIC SURFACTANT ADSORPTION ON TO ASPHALT-COVERED CLAYS

被引：7
作者：
SIFFERT, B
JADA, A
WERSINGER, E
机构：
[1] Centre de Rechercches sur la Physicco-Chimie des Surfaces Solides, 68200 Mulhouse, 24, avenue du President Kennedy
来源：
COLLOIDS AND SURFACES | 1992年 / 69卷 / 01期
关键词：
ADSORPTION; ANIONIC SURFACTANT; ASPHALT; CLAYS;
D O I：
10.1016/0166-6622(92)80237-V
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：
Asphalt adsorption from water-saturated toluene on Na+ kaolinite, Ca2+ kaolinite, Na+ illite and Ca2+ illite clays was investigated. It was found that the kaolinite surface adsorbed more asphalt than illite for both the Na+- and the Ca2+ exchanged forms. Adsorption from aqueous solutions of sodium dodecylbenzenesulphonate (SDBS) and sodium dodecyl sulphate (SDS) on various asphalt-covered clays was also studied. The shape of the isotherms depended on the asphalt-clay substrate and showed a much lower adsorption of SDBS beyond the CMC. Desorption of asphalt from various clays with SDBS and SDS surfactants was measured spectrophotometrically. The percentage weight of asphalt desorbed with SDBS was twofold higher than that desorbed with SDS surfactant.
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收藏
页码：45 / 51
页数：7
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