Heats of n-Hexane and n-Heptane Vapor Adsorption onto Polyhydroxyaluminum Montmorillonite

被引：2
|
作者：
Muminov, S. Z. [1 ]
Khandamov, D. A. [1 ]
Rakhimova, G. B. [1 ]
机构：
[1] Acad Sci Uzbek, Inst Gen & Inorgan Chem, Tashkent 700170, Uzbekistan
来源：
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A | 2011年 / 85卷 / 01期
关键词：
montmorillonite; n-hexane; n-heptane; adsorption heat; SODIUM; CATALYSTS;
D O I：
10.1134/S0036024411010195
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 differential isosteric heat of the adsorption of n-hexane and n-heptane vapors on dehydrated polyhydroxyaluminum montmorillonite was determined. Using the temperature dependence of the parameters of the adsorption equilibrium, it was established that substituting sodium ions for polyhydroxyaluminum cations leads to an increase in the volume of micropores and the adsorption heat of hydrocarbons, and the curves of the adsorption heats of C(6)H(14) and C(7)H(16) are of an extreme nature. The appearance of the maxima is associated with the interaction between and among the adsorbate molecules and active centers, due to consolidation in the process of filling micropore volumes.
引用
收藏
页码：112 / 116
页数：5
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