-
Article
Thermodynamics of the adsorption of organic compounds from the gas phase over a monolayer of liquid crystal formed on the surface of a carbon adsorbent
Inverse gas-solid chromatography is used to study the adsorption of vapors of organic compounds with different structures and polarities on a carbon adsorbent modified with a monolayer of 4-(3-hydroxypropyloxy...
-
Article
Adsorption of argon on graphite and graphite with preadsorbed xenon monolayer: Simulation using the Monte Carlo technique
The Monte Carlo technique in the “Gibbs” ensemble is used to calculate Henry constants of adsorption of argon on graphite and graphite with preadsorbed xenon monolayer with an ideal commensurate ...
-
Article
Using reverse gas-liquid chromatography to determine the thermodynamic functions of sorption in a system of constant volume
A static “ideal gas phase-nonvolatile liquid” system of constant volume in which the volatile component (sorbate) is redistributed is compared to a chromatographic system under conditions corresponding to equi...
-
Article
Sorption properties of perbenzoylated β-cyclodextrin deposited onto a carbon support
Thermodynamic parameters are determined for the adsorption of vapors of hydrocarbons and polar compounds of different structure on carbon adsorbent modified by a monomolecular layer of heptakis(2,3,6-tri-O-benzoy...
-
Article
Adsorption of volatile organic compounds on Carbopack Y adsorbent modified by β-cyclodextrins
The thermodynamic study on the adsorption of vapor-phase organic compounds on surface of the Carbopack Y carbon-based sorbent modified by monolayer of heptakis(2,3,6-tri-O-methyl)-β-cyclodextrin or heptakis(2,3,6...
-
Article
Gas chromatography investigations of thermodynamics of adsorption of organic compound vapors on carbon adsorbent modified by β-cyclodextrin derivatives
The adsorption of organic-compound vapors of various structures and polarities on carbon adsorbent modified by permethylated and perbenzylated β-cyclodextrin is investigated using gas chromatography. The obtai...
-
Article
Adsorption of organic vapors on the Carbopack Y carbon adsorbent modified with heptakis-(2,3,6-tri-O-methyl)-β-cyclodextrin
The adsorption of organic vapors on the Carbopack Y carbon adsorbent modified with a mono-molecular layer of heptakis-(2,3,6-tri-O-methyl)-β-cyclodextrin was studied by gas chromatography. The deposition of the m...
-
Article
The adsorption of polar molecules on the surface of graphite modified with a monomolecular layer of a mesogen
An equation for the potential energy of the interaction of a quasi-solid polar adsorbate molecule with a semiinfinite graphite crystal containing a monomolecular layer of polar anisometric particles on its sur...
-
Article
Interrelation between the spatial structure of unsaturated hydrocarbon molecules and heats of their adsorption
The total area (s m) of Voronoi-Dirichlet polyhedron faces corresponding to all intermolecular contacts of one molecule in the structure of crystals and the total volume of pyramids (V ...
-
Article
The Thermodynamic Parameters of Sorption and Selectivity of Chiral Nematic Liquid Crystals of Terephthalidene-bis-2-methylbutyl para-Aminobenzoate
The thermodynamic characteristics of sorption of n-alkanes, arenes, aldehydes, monoatomic alcohols, and isomeric forms of butanediol-2,3 by chiral nematic liquid crystals, terephthalidene-bis-2-methylbutyl para-a...
-
Article
New methods for determining the volumetric flow rate in the column and the retention time of the unretained substance in gas chromatography
New methods for calculating the mean volumetric flow rate of the carrier gas and the retention time of the unretained substance in the column under conditions of gas chromatography were proposed. The methods a...
-
Article
Influence of flow parameters of the mobile phase on the retention and thermodynamic characteristics of sorption in gas-liquid chromatography
The influence of the flow parameters of the mobile phase (flow rate and mean pressure in the column) on the retention and thermodynamic characteristics of sorption in gas-liquid chromatography is studied exper...
-
Article
The adsorption of organic compounds on a modified carbon adsorbent Carbopack B
The thermodynamic characteristics of adsorption of several organic compounds on the carbon adsorbent Carbopack B before and after its modification by a monomolecular layer of cholesteryl-n-pentyl oxybenzoate were...
-
Article
Generating gas flows with a constant trace concentration of hydrogen sulfide
The dynamic gas extraction of hydrogen sulfide from aqueous solutions of sodium sulfide was studied theoretically and experimentally. The effects of the number of bubblers, the concentration of sodium sulfide,...
-
Article
Analysis of Mixtures Containing Unknown Components by Gas Chromatography: Determination of Molecular Mass
New methods are proposed for the gas-chromatographic determination of the molecular masses of unknown components in complex mixtures within one cycle of analysis. The methods are based on the use of complex ch...
-
Article
Thermodynamic parameters of adsorption of adamantane and its derivatives on graphitized thermal carbon black
The adsorption equilibrium constants for adamantane, 1-fluoro-, 1-chloro-, 1,3-difluoro-, 1,3-dichloro-, 1,3-dibromo-, and 1-hydroxyadamantane, and methyl 1-adamantyl ketone were determined by gas chromatograp...
-
Article
Averaging the pressure and flow rate of the carrier gas in a gas chromatographic column
A systematic derivation of corresponding equations shows that averaging the pressure and the flow rate of the mobile phase in a gas chromatographic column over the column length and over the time that an unret...
