Virial Description of Two-Component Adsorption on Homogeneous and Heterogeneous Surfaces

1997 ◽  
Vol 36 (6) ◽  
pp. 2197-2206 ◽  
Author(s):  
Syed M. Taqvi ◽  
M. Douglas LeVan
Keyword(s):  
Heterogeneous Surfaces ◽  
Two Component ◽  
Component Adsorption

Interference theory: Moment solution for two component adsorption chromatography

1993 ◽  
Vol 36 (1) ◽  
pp. 289-292 ◽  
Author(s):  
G. M. Zhong ◽  
F. Meunier ◽  
G. Guiochon
Keyword(s):  
Adsorption Chromatography ◽  
Interference Theory ◽  
Two Component ◽  
Component Adsorption

The Mixed Adsorption Layers of Butanol/Thiourea and Butanol/Toluidine at the Interface Hg/Aqueous Perchlorate Solution

1996 ◽  
Vol 61 (7) ◽  
pp. 999-1009 ◽  
Author(s):  
Jadwiga Saba
Keyword(s):  
Standard Gibbs Energy ◽  
Bulk Concentration ◽  
Differential Capacity ◽  
Surface Excess ◽  
Capacity Zero ◽  
Charge Potential ◽  
Two Component ◽  
Adsorption Layers ◽  
Component Adsorption ◽  
Zero Charge Potential

Properties of mixed, two-component adsorption layers of butanol/thiourea, butanol/m-toluidine and butanol/p-toluidine in 1 M NaClO4 were investigated. The systems were characterized by the measurements of differential capacity, zero charge potential and surface tension at this potential. The data were analyzed to obtain the surface pressure and relative surface excess of thiourea, m-toluidine or p-toluidine as a function of charge and bulk concentration of these substances. The standard Gibbs energy of adsorption and parameters α, B obtained from the Frumkin and virial isotherms were compared. The electrostatic parameters of the inner layer were determined.

scholarly journals Displacement Transition in CH4/Cyclohexane Adsorbed on Graphite

1997 ◽  
Vol 15 (4) ◽  
pp. 271-276 ◽  
Author(s):  
Hiromu Asada ◽  
Hiroshi Seiyama ◽  
Miho Takechi
Keyword(s):  
Layer By Layer ◽  
Two Phase ◽  
First Order ◽  
First Order Phase Transition ◽  
Two Component ◽  
Layer Mode ◽  
Adsorbed Methane ◽  
First Order Phase ◽  
Adsorption Of Methane ◽  
Component Adsorption

The adsorption of methane on cyclohexane-preplated graphite has been studied volumetrically at 77 K. Methane undergoes a displacement transition as well as layer-by-layer condensation transitions, similarly to Kr studied previously. The isotherm step of the displacement transition is clear and sharp, being indicative of a first-order phase transition. The transition takes place when the adsorbed methane molecules exceed the pre-adsorbed cyclohexane in number. The results support our previous interpretation that the displacement transition is a change from the layer-on-layer mode to the two-phase mode of two-component adsorption.

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