Theoretical basis of liquid adsorption chromatography with mixed mobile phases and its connection with the theory of adsorption from multicomponent solutions

Jaroniec, Mietek; Martire, Daniel E.; Borówko, M.

doi:10.1016/0001-8686(85)80005-1

Cited by 57 publications

(27 citation statements)

References 117 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We neglect molecular interactions in the liquid mixture. Numerous studies have shown that the assumptions are quite reasonable for many chromatographic systems and the model describes the most salient features of retention Jaroniec 1983a, 1983b;Borówko and Ościk-Mendyk 2005;Jaroniec et al 1985). Indeed, the molecular sizes of the majority of solvents used in the normal-phase liquid chromatography are very similar or at least they are of the same order of magnitude.…”

Section: Theorymentioning

confidence: 99%

“…Adsorption from liquid mixtures has a competitive character, so the process can be described by the following phase-exchange reactions (Jaroniec et al 1985)…”

Section: Theorymentioning

confidence: 99%

“…The constant K ij that describes adsorption of the ith component from the binary liquid mixture (i, j ) is given by (Borówko 1986;Jaroniec et al 1985)…”

Section: Theorymentioning

confidence: 99%

“…Such a manipulation of separation requires the functional relationships between retention factors and the mobile phase composition. Numerous models have been developed to describe the retention in liquid solid chromatography with mixed mobile phases, several reviews cover the results (Borówko 2002;Jaroniec 1983a, 1983b;Jaroniec et al 1985;Nurok 1989;Snyder 1969;Soczewiński 2002). These approaches involve various factors, namely, interactions with the surface Jandera et al 2001;Jaroniec et al 1978;Scott and Kucera 1975;Snyder and Glajch 1981), non-specific interactions in the liquid phase (Boehm and Martire 1980;Borówko 1984) association and solvation effects Jaroniec 1983a, 1983b;Jaroniec et al 1985) differences in molecular sizes of components (Borówko 1986)), energetical heterogeneity of the adsorbent (Borówko 2002;Borówko and Jaroniec 1979;Jaroniec and Ościk-Mendyk 1981), orientation of solute molecules on the surface (Borówko 1988), etc.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Selectivity in normal-phase liquid chromatography with binary mobile phase

Borówko

Ościk‐Mendyk

2010

Adsorption

View full text Add to dashboard Cite

A simple theoretical approach to normal-phase liquid chromatography with binary mobile phase is presented. In the model used the driving force for the retention is competitive adsorption of solutes and both solvents. A new expression for the separation factor is proposed and discussed. An influence of different parameters on the selectivity is shown. The theoretical concepts are illustrated by the selected experimental data.

show abstract

Section: Theorymentioning

confidence: 99%

“…Adsorption from liquid mixtures has a competitive character, so the process can be described by the following phase-exchange reactions (Jaroniec et al 1985)…”

Section: Theorymentioning

confidence: 99%

“…The constant K ij that describes adsorption of the ith component from the binary liquid mixture (i, j ) is given by (Borówko 1986;Jaroniec et al 1985)…”

Section: Theorymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Selectivity in normal-phase liquid chromatography with binary mobile phase

Borówko

Ościk‐Mendyk

2010

Adsorption

View full text Add to dashboard Cite

show abstract

“…Much less work has been done on the description of the microscopic phase entrapped in the pores of the packing material, mainly if one of the components of the eluent specifically interacts with the active centres of the gel. In this regard, some contributions dealing with chromatographic modes other than SEC in multicomponent eluents have been published (10)(11)(12). Thus, Jaroniec and Martire (13) reported a description of solute retention in LC with mixed eluents involving non-specific solute-solvent and solvent-solvent interactions in both mobile and surface phases, as well as association equilibria in these phases.…”

mentioning

confidence: 99%

Modeling of Stationary Phase in Size Exclusion Chromatography with Binary Eluents

Soria

Campos

Figueruelo

et al. 1996

ACS Symposium Series

View full text Add to dashboard Cite

Distribution coefficients for polystyrene obtained from size-exclusion liquid chromatography experiments on a silica-based packing in benzene-methanol binary eluent, have served to test the validity of those theoretically predicted. For this purpose, we use the Flory--Huggins lattice theory for the thermodynamic description of the polystyrene behaviour in mixed solvents as eluent, including the preferential solvation effect. Moreover, an structural description of the stationary phase is performed through a binary-layered-phase model for methanol adsorption on the pore wall, involving a self--association process. Diverse alternative ways to evaluate the distribution coefficients are detailed in-depth and the results discussed.Multicomponent eluents are often used in Liquid Chromatography (LC) under isocratic conditions in both organic and aqueous environments (7,2). The inherent advantage of using these eluents is to change gradually some properties such as eluent strength, viscosity, solubility respect to the solute, to decrease the boiling point for volatile single eluents, polarity, etc. In the case of size-exclusion chromatography (SEC) of polymers, two applications of the multicomponent eluents deserve to be mentioned. The first one refers to a new mode of SEC, called Critical SEC often used to separate polymers of the same molar mass but different functionality, end-groups or topology (linear, branched, comb) (5-5). These critical conditions are created with specific multicomponent eluents often formed by a nonsolvent/solvent mixture at a given composition and temperature. However, the exact mechanism of the polymer retention under critical conditions is not clear yet. The second advantage of using this kind of eluents concerns the possibility to perform transient stationary phases by chemisorption of one or more components of the eluent on the active centres of the gel packing. Focusing our attention in a binary eluent formed by a solvent/non-solvent for the polymer, the stationary phase can be enriched or depleted in one of the components respect to the original composition of the mobile phase. This feature has been investigated in-depth many years ago from a 0097-6156/96/0635-0103$16.00A)

show abstract

Adsorption of Rigid‐Rod Trimers from Liquid Mixture with Monomers on Heterogeneous Surfaces

Borówko

Rżysko

1997

Ber Bunsenges Phys Chem

Self Cite

View full text Add to dashboard Cite

The results of Monte Carlo simulation for adsorption of linear trimers from their mixtures with monomers on homogeneous and heterogeneous surfaces are analysed. The lattice model of the liquid mixture is used. The different surface topographies (strip‐like and chess‐board) are considered. An influence of surface topography, size of homogeneous patches and molecular interactions on adsorption and orientational ordering in the mixed fluid near the boundary plane is discussed.

show abstract

Theoretical basis of liquid adsorption chromatography with mixed mobile phases and its connection with the theory of adsorption from multicomponent solutions

Cited by 57 publications

References 117 publications

Selectivity in normal-phase liquid chromatography with binary mobile phase

Selectivity in normal-phase liquid chromatography with binary mobile phase

Modeling of Stationary Phase in Size Exclusion Chromatography with Binary Eluents

Adsorption of Rigid‐Rod Trimers from Liquid Mixture with Monomers on Heterogeneous Surfaces

Contact Info

Product

Resources

About