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Determination of the Adsorption Energy of Some Volatile Solvents on the Surface of a Mesoporous Carbon Adsorbent by Gas-chromatography

Marian Snauko ; Polymer Institute of the Slovak Academy of Sciences, Bratislava, Slovak Republic
Dusan Berek ; Polymer Institute of the Slovak Academy of Sciences, Bratislava, Slovak Republic
Tibor Cserháti ; Institute of Materials and Environmental Chemistry, Chemical Research Center, Hungarian Academy of Sciences, Budapest, Hungary

Sažetak

Retention times of 21 volatile solvents were determined on a mesoporous carbon adsorbent stationary
phase by gas chromatography at various column temperatures and the energy of adsorption
was calculated from the dependence of the retention time on the column temperature.
Energies of adsorption showed high variations proving that the carbon stationary phase is suitable
for separation of this class of analytes. Quantitative structure-retention computations demonstrated
that the strength of adsorption significantly depends on the molecular volume, indicating
the dominant role of sterical correspondence in the adsorption.

Ključne riječi

adsorption energy; volatile solvents; gas chromatography

Hrčak ID:

31124

URI

https://hrcak.srce.hr/31124

Datum izdavanja:

15.11.2008.

Posjeta: 1.480 *