Please use this identifier to cite or link to this item:
http://dspace.onu.edu.ua:8080/handle/123456789/33267
Title: | Adsorption Hysteresis in Open Slit-like Micropores |
Authors: | Drahan, Hryhorii S. Kutarov, Volodymyr V. Schieferstein, Eva Iorgov, Alexander Драган, Григорій Сильвестрович Драган, Григорий Сильвестрович Кутаров, Володимир Володимирович Кутаров, Владимир Владимирович |
Citation: | Molecules |
Issue Date: | 2021 |
Keywords: | adsorption desorption hysteresis modelling fractal dimension degree of irreversibility |
Series/Report no.: | ;Vol.26. |
Abstract: | Adsorption hysteresis in the low-pressure range is only rarely described in the literature. To optimise, for example, heat storage technologies, a deeper understanding of the low-pressure hysteresis (LPH) process is necessary. Here, two thermodynamically based approaches are further developed for analysing the LPH within the framework of thermodynamically irreversible processes and fractal geometry. With both methods developed, it is possible to obtain the description of the adsorption and desorption branches with high accuracy. Within the framework of the two thermodynamic models of the hysteresis loop, generalised equations are obtained with the control parameter in the form of the degree of irreversibility. This is done by taking the adsorption of water on alumina as an example. It is shown that the fractal dimension of the adsorption process is larger than the fractal dimension of the desorption branch, meaning that the phase state of the adsorbate is more symmetric during the adsorption step than in the desorption process. |
URI: | http://dspace.onu.edu.ua:8080/handle/123456789/33267 |
DOI: | https://doi.org/10.3390/molecules26165074 |
Appears in Collections: | Статті та доповіді НДІ Фізики |
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