INFLUENCE OF ADSORBATE SIZE AND ADSORBENT HETEROGENEITY ON IAST

被引：90
作者：
SIRCAR, S
机构：
[1] Air Products and Chemicals, Inc., Allentown, Pennsylvania
来源：
AICHE JOURNAL | 1995年 / 41卷 / 05期
关键词：
D O I：
10.1002/aic.690410509
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The ideal adsorbed solution theory (IAST) can introduce serious errors in the calculation of multicomponent gas adsorption equilibria from the corresponding pure gas adsorption isotherms when the adsorbate sizes and the degree of adsorbent heterogeneity for adsorption of the components differ substantially. The multisite Langmuir and heterogeneous Langmuir models were used to evaluate the extent of these errors. It is shown that large differences in adsorbate sizes and degrees of heterogeneity of adsorption of the components of a mixture can cause the formation of an adsorption azeotrope that cannot be described by IAST.
引用
收藏
页码：1135 / 1145
页数：11
相关论文
共 13 条
[1]   ADSORPTION OF CARBON MONOXIDE-NITROGEN, CARBON MONOXIDE-OXYGEN, AND OXYGEN-NITROGEN MIXTURES ON SYNTHETIC ZEOLITES [J].
DANNER, RP ;
WENZEL, LA .
AICHE JOURNAL, 1969, 15 (04) :515-&
[2]   GAS-ADSORPTION ON SILICALITE [J].
GOLDEN, TC ;
SIRCAR, S .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1994, 162 (01) :182-188
[3]   EQUILIBRIUM AND KINETICS OF ADSORPTION OF FREON-12 AT INFINITE DILUTION [J].
GOLDEN, TC ;
SIRCAR, S .
AICHE JOURNAL, 1994, 40 (06) :935-943
[4]   A kinetic theory of adsorption [J].
Henry, DC .
PHILOSOPHICAL MAGAZINE, 1922, 44 (262) :689-705
[5]   ADSORPTION OF TRACE GASES (PROPANE, BUTANE AND FREON-12) FROM CARRIER GASES (HELIUM, NITROGEN AND CARBON-DIOXIDE) ON ACTIVATED CARBON [J].
JOSEPH, JC ;
MYERS, AL ;
GOLDEN, TC ;
SIRCAR, S .
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1993, 89 (18) :3491-3497
[6]   THERMODYNAMICS OF MIXED-GAS ADSORPTION [J].
MYERS, AL ;
PRAUSNITZ, JM .
AICHE JOURNAL, 1965, 11 (01) :121-+
[7]  
MYERS AL, 1984, P INT C FUND ADS ENG, P365
[8]   AN ADSORPTION-ISOTHERM OF MULTI-SITE OCCUPANCY MODEL FOR HOMOGENEOUS SURFACE [J].
NITTA, T ;
SHIGETOMI, T ;
KUROOKA, M ;
KATAYAMA, T .
JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, 1984, 17 (01) :39-45
[9]  
OBRIEN JA, 1987, P INT C FUND ADS ENG, P451
[10]   EXCESS PROPERTIES AND THERMODYNAMICS OF MULTICOMPONENT GAS-ADSORPTION [J].
SIRCAR, S .
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I, 1985, 81 :1527-1540
12