SIZE-DEPENDENT ADSORPTION MODELS IN MICROPOROUS MATERIALS .1. THERMODYNAMIC CONSISTENCY AND THEORETICAL-ANALYSIS

被引:5
|
作者
GIONA, M
GIUSTINIANI, M
机构
[1] UNIV ROMA LA SAPIENZA,DIPARTIMENTO INGN CHIM,I-00184 ROME,ITALY
[2] UNIV CAGLIARI,DIPARTIMENTO INGN CHIM,I-09123 CAGLIARI,ITALY
关键词
D O I
10.1021/ie00038a023
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
We analyze size-scaling effects on the functional form of adsorption isotherms in microporous materials. In particular, Keller adsorption isotherms are carefully discussed, focusing attention on the description of energetic/geometric heterogeneity and on thermodynamic consistency (low-pressure behavior). In order to justify the Freundlich behavior shown by the Keller isotherms, a Monte Carlo model of preferential adsorption is discussed. Despite its simplicity, this model exhibits extremely rich behavior.
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页码:3848 / 3855
页数:8
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