Abstract
A method for measurement of low-molecular weight compounds adsorption from solutions in liquefied gases and supercritical fluids based on the online coupling of high-pressure autoclave and supercritical fluid chromatograph has been proposed and tested. This method has been shown to be applicable to determine sorption capacity and to plot isotherms for adsorption of low-molecular weight compounds from solutions in supercritical carbon dioxide onto surface of silica xerogels and aerogels. The method provides the application of xerogels and aerogels as carriers for targeted drug delivery and controlled release.
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ACKNOWLEDGMENTS
The authors thank S.Yu. Kottsov (Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences) for the measurement of specific surface area of xerogels by low-temperature nitrogen adsorption method.
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This work was supported by the Russian Science Foundation (project no. 17-73-20377).
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Translated by I. Kudryavtsev
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Kostenko, M.O., Ustinovich, K.B. & Pokrovskii, O.I. Online Monitoring of Adsorption onto Silica Xerogels and Aerogels from Supercritical Solutions Using Supercritical Fluid Chromatography. Russ. J. Inorg. Chem. 65, 1577–1584 (2020). https://doi.org/10.1134/S0036023620100125
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DOI: https://doi.org/10.1134/S0036023620100125