Sorption of butane, propane, ethane, methane, and carbon dioxide on asphaltene |
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| Authors: | A. N. Dmitrievskii A. A. Pribylov N. A. Skibitskaya L. A. Zekel’ A. P. Kubyshkin M. Ya. Shpirt |
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| Affiliation: | (1) Institute of Oil and Gas Problems, Russian Academy of Sciences, ul. Gubkina 3, Moscow, 119991, Russia;(2) Institute of Physical Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 117915, Russia;(3) Institute of Laser and Information Technology Problems, Russian Academy of Sciences, Moscow, Russia;(4) Institute of Fossil Fuels, Moscow, Russia |
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| Abstract: | Isotherms of sorption of butane, propane, ethane, methane, and carbon dioxide on an asphaltene sample of known elemental composition were measured. The effect of the pressure and temperature on the shape the sorption isotherms for all the adsorption systems studied was examined. The values of the initial heat of sorption were determined and compared to the energies of interaction of the molecules with asphaltene. The results obtained suggest that asphaltene is a swellable amorphous sorbent. |
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