dc.contributor.author |
Mishchenko A. |
|
dc.contributor.author |
Yakimov N. |
|
dc.contributor.author |
Potashev K. |
|
dc.contributor.author |
Breus V. |
|
dc.contributor.author |
Breus I. |
|
dc.date.accessioned |
2018-09-18T20:10:29Z |
|
dc.date.available |
2018-09-18T20:10:29Z |
|
dc.date.issued |
2007 |
|
dc.identifier.issn |
0927-7757 |
|
dc.identifier.uri |
https://dspace.kpfu.ru/xmlui/handle/net/137259 |
|
dc.description.abstract |
Recently, we proposed a new four-parametric MGAB equation (modified Guggenheim-Anderson-De Boer equation, GAB) for fitting of experimental isotherms of vapor-phase sorption on geosorbents. In the present study, the theoretical meaning of MGAB equation was elucidated. For this purpose, the properties of the equation of multilayer adsorption on a heterogeneous surface with local characteristics described by GAB model and Zeldovitsh-Roginskiy energy distribution function ρ(ε) were derived and the satisfaction of MGAB equation with these properties was shown. MGAB model has two parameters connected with GAB model: vm is the monolayer sorption capacity and k is the constant of the multilayer sorption, as well as two parameters of sorption energy distribution function ρ(ε): α, characterizing heterogeneity of ρ(ε) and C0, reflecting energy baseline. The influence of parameters α and C0 on the shape of both ρ(ε) and model sorption isotherm was established. The applicability of MGAB model for the description of surface heterogeneity of a natural sorbent by example of 13 different sorbate-sorbent systems dried and moistened has been discussed. For these systems equilibrium sorption isotherms were measured, corresponding energy distribution functions ρ(ε) were calculated, and obtained α values were compared. On the whole, the differences in α values responded to the real tendencies of heterogeneity changes in these systems. © 2006 Elsevier B.V. All rights reserved. |
|
dc.relation.ispartofseries |
Colloids and Surfaces A: Physicochemical and Engineering Aspects |
|
dc.subject |
Heterogeneous surfaces |
|
dc.subject |
MGAB equation |
|
dc.subject |
Sorption energy distribution function |
|
dc.subject |
Vapor-phase sorption |
|
dc.title |
The equation of vapor-phase sorption on heterogeneous surfaces with local Guggenheim-Anderson-De Boer model |
|
dc.type |
Article |
|
dc.relation.ispartofseries-issue |
1-3 |
|
dc.relation.ispartofseries-volume |
296 |
|
dc.collection |
Публикации сотрудников КФУ |
|
dc.relation.startpage |
182 |
|
dc.source.id |
SCOPUS09277757-2007-296-13-SID33846938141 |
|