Specific retention volumes and limiting activity coefficients of C4-C8 alkane solutes in C22-C36 n-alkane solvents

1975 ◽  
Vol 20 (2) ◽  
pp. 145-151 ◽  
Author(s):  
Jon F. Parcher ◽  
Paul H. Weiner ◽  
Charles L. Hussey ◽  
Theodore N. Westlake
Keyword(s):  
Activity Coefficients ◽  
Specific Retention Volumes ◽  
Specific Retention ◽  
Retention Volumes ◽  
Alkane Solvents

Adsorption of Vapours of Some Organic Compounds on Surface of Iron-Substituted Layered Vanadyl Phosphate

2000 ◽  
Vol 65 (1) ◽  
pp. 47-57 ◽  
Author(s):  
Pavel Hradil ◽  
Jiří Votinský ◽  
Karel Komárek ◽  
Vítězslav Zima ◽  
Jaroslava Kalousová ◽  
...  
Keyword(s):  
Organic Compounds ◽  
Organic Molecules ◽  
Ferric Ions ◽  
Vanadyl Phosphate ◽  
Enthalpy Of Adsorption ◽  
Adsorbent Surface ◽  
Specific Retention Volumes ◽  
Specific Retention ◽  
Retention Volumes ◽  
Chromatographic Measurement

Gas chromatographic measurement of specific retention volumes of vapours of selected groups of organic compounds has been used to determine differential molar enthalpy of adsorption of their molecules on the surface of layered vanadyl phosphate substituted with ferric ions having the composition of [Fe(H2O)]0.20(VO)0.80PO4. Various types of bonds of the molecules to the surface of the layered adsorbent including their probable orientation with respect to the layers have been discussed. It was observed a dependence of the specific peak elution volume and shape of chromatographic peak on the sample size in the cases of those compounds whose molecules are chemically bound to the adsorbent surface. A connection is pointed out between the adsorption strength of the organic molecules on the layered adsorbent and the tendency of the system to undergo intercalation reaction.

Indirect determination of specific retention volumes in gas chromatography

1984 ◽  
Vol 312 ◽  
pp. 69-74 ◽  
Author(s):  
Elena Fernández-Sánchez ◽  
José Antonio García-Domínguez ◽  
Vicente Menendez ◽  
Enrique Pertierra-Rimada
Keyword(s):  
Gas Chromatography ◽  
Indirect Determination ◽  
Specific Retention Volumes ◽  
Specific Retention ◽  
Retention Volumes
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