ADSORPTION OF GASEOUS P-XYLENE AND M-XYLENE ON NAY, KY, AND BAY ZEOLITES .2. MODELING - ENTHALPIES AND ENTROPIES OF ADSORPTION

被引：34
|
作者：
BELLAT, JP
SIMONOTGRANGE, MH
机构：
[1] Université de Bourgogne, Laboratoire de Recherches sur la Réactivité des Solides, Dijon
来源：
ZEOLITES | 1995年 / 15卷 / 03期
关键词：
ADSORPTION; Y FAUJASITE; XYLENES; MODELING; ENTHALPY; ENTROPY; MOBILITY; ACIDITY;
D O I：
10.1016/0144-2449(94)00048-W
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 isotherms of xylenes are described by Henry's law and Langmuir's model on NaY and KY and the Dubinin-Radushkevich model on BaY. The isoteric enthalpies of adsorption show on each zeolite that the adsorbate-adsorbent interactions are nearly the same with both isomers. They are stronger on BaY than on NaY and KY. The adsorbate-adsorbate interactions are stronger with m-xylene than with p-xylene and especially outstanding on KY, The entropies of adsorption show that the mobility of the adsorbate is fewer with m-xylene than with p-xylene, The isosteric free enthalpies of adsorption are related to the acidity of each zeolite. BaY has a stronger acidity and a greater ability to adsorb xylenes than NaY and KY.
引用
收藏
页码：219 / 227
页数：9
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