Interlamellar adsorption of 1-pentanol from aqueous solution on hydrophobic clay mineral

被引：44

作者：

Dekany, I ^{[1
]}

Farkas, A ^{[1
]}

Kiraly, Z ^{[1
]}

Klumpp, E ^{[1
]}

Narres, HD ^{[1
]}

机构：

[1] FORSCHUNGSZENTRUM JULICH, RES CTR JULICH, INST APPL PHYS CHEM, D-52425 JULICH, GERMANY

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 1996年 / 119卷 / 01期

关键词：

enthalpy of displacement; interlamellar adsorption; microcalorimetry; organoclay; vermiculite; X-ray diffraction;

D O I：

10.1016/S0927-7757(96)03738-7

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 adsorption and desorption of aqueous l-pentanol solutions on hydrophobized layer silicates (octadecylammonium vermiculite) were studied by determining adsorption isotherms on the one hand, and enthalpy isotherms obtained by the microcalorimetry method on the other, The adsorption displacement process was analyzed by X-ray diffraction and values of basal spacing (d(L)) were determined. By combining these three methods, calculations of the composition and structure of the interlamellar space were carried out. Data obtained by microcalorimetry proved: (i) that the interlamellar adsorption of n-pentanol is an endothermic process: and (ii) that adsorption-desorption in the region of the alkyl chains of the adsorbed surfactant molecules is kinetically inhibited.

引用

页码：7 / 13

页数：7

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