SORBOSTRICTION OF MICROPOROUS CARBON ADSORBENT FAS-3 AT ADSORPTION OF ORGANIC SUBSTANCES VAPORS FROM NITROGEN FLOW
Abstract
For the first time, complex studies were carried out on adsorption deformation – sorbostriction of microporous carbon adsorbent FAS-3 at adsorption of hexane, benzene and carbon tetrachloride from the flow of carrier gas – nitrogen in non-equilibrium conditions. The results of this phenomenon were analyzed. In work a microporous carbon adsorbent FAS-3, obtained on the basis of furfural was used. Active coals on the basis of thermosetting plastics grades of FAS are significantly better than commercially-produced carbon adsorbents based on coal and peat on their mechanical properties and low ash content at a much greater development of the volume of the adsorbent micropores. We used the facility for studies of adsorption deformation of a solid adsorbent, manufactured in the Institute of Physical Chemistry and Electrochemistry of RAS. For the measurements we used a flow dilatometer, allowing measuring the adsorption deformation of the adsorbent while passing through it portions of the test substance or mixture in the carrier gas flow. It is shown that values of the maxima on the curves of deformation increase with increasing the concentrations of the components of the mixture. The area under the curve of barbastelle depends on the amount of injected material in a flow of carrier gas. Exit time curves of barbastelle to the maximum is individually for each of the studied substances, which enables you to use the effect of barbastelle to detect the presence of certain substances in the mixture. The results of the wave sorbostriction of microporous carbon adsorbent FAS-3 at adsorption of benzene, hexane, carbon tetrachloride from the flow of carrier gas - nitrogen allow to conclude on the high selectivity of adsorption and the possibility of using the adsorbent as a sensor to control the content of these substances in a flow of nitrogen.
For citation:
Zaytsev D.S., Tvardovskiy A.V., Shkolin A.V., Fomkin A.A. Sorbostriction of microporous carbon adsorbent FAS-3 at adsorption of organic substances vapors from nitrogen flow. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2017. V. 60.
N 4. P. 54-59.
References
Fomkin A.A., Pulin A.L. Adsorption deformation of zeolite at xenon high pressure. Izvestiya RAN. Ser. Khim. 1996. N 2. P. 336-338 (in Russian). DOI: 10.1007/bf02494738.
Krasilnikova O.K., Sarylova M.E., Falko L.A. Temperature dependence of sorption deformation. Izvestiya AN SSSR. Ser. khim. 1992. N 1. P. 23-28 (in Russian).
Tvardovskiy A.V. Sorbent Deformation. Academic Press: Amsterdam, Boston, London etc. 2006. 286 p.
Shkolin A.V., Fomkin A.A. Deformation of micro porous carbon adsorbent AUK stimulated with methane adsorption. Kolloid. Zhurn. 2009. V.71. N 1. P. 116-121 (in Russian).
Rusanov A.I. Mechano chemical phenomena in micro porous bodies. Zhurn. Obshch. Khimii. 2006. V. 76. N 1. P. 7-12 (in Rus-sian).
Bangham D.H., Fakhoury N. The Expansion of Charcoal Accompanying Sorption of Gases and Vapours. Nature. 1928. N 122. P. 681-687. DOI: 10.1038/122681b0.
Meehan F.T. The Expansion of Charcoal on Sorption of Carbon Dioxide. Proc. Roy. Soc. 1927. A115. P. 199-205. DOI: 10.1098/rspa.1927.0085.
Bakaev V.A. Molecular theory of physical adsorption. Disertation for doctor degree on fiz.-mat. sciences. M.: MSU. 1989. 351 p. (in Russian).
Shekhovtsova L.G., Fomkin A.A., Bakaev V.A. Statistical thermodynamic of adsorption equilibrium for zeolites in a frame of cell model. Izvestiya AN SSSR. Ser. Khim. 1987. N 10. P. 2347-2350 (in Russian).
Gusev V., Fomkin A. High-Pressure Adsorption of Xe on NaX Zeolite by Microcalorimetry and Isosteric Analysis. J. Colloid Interface Sci. 1994. V. 162. P. 279-283. DOI: 10.1006/jcis.1994.1040.
Dubinin M.M. Adsorbtion and porosity. M.: VAKhZ. 1972. 127 p. (in Russian).
Vargaftik N.B. Handbook on heat-physical properties of gases and liquids. M.: Nauka. 1972. 720 p. (in Russian).
Shkolin A.V. Dissert. kandidata himicheskih nauk. M.: IKhF RAN. 226 p. (in Russian).