Clay Swelling: Role of Cations in Stabilizing/Destabilizing Mechanisms.
Journal article
Chen, W., Grabowski, Robert C and Goel, S. (2022). Clay Swelling: Role of Cations in Stabilizing/Destabilizing Mechanisms. ACS Omega. 7 (4), pp. 3185-3191. https://doi.org/10.1021/acsomega.1c04384
Authors | Chen, W., Grabowski, Robert C and Goel, S. |
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Abstract | The stepwise hydration of clay minerals has been observed repeatedly in studies, but the underlying mechanism remains unclear. Previous numerical studies confirmed the presence of one-water layer (1W) and two-water layer (2W) hydration states. However, the undisturbed transition between these hydration states has never been captured. Using molecular dynamics simulation, this study (i) simulated for the first time the free 1W-2W transition during clay hydration and (ii) identified the underlying mechanism to be the detachment of cations from the clay surface and the formation of a shell of water molecules around the cation. The swelling dynamics of clay was found to be affected by the clay charge, clay mineralogy, and counterions through complex cation-clay interactions, cation hydration capacity, and cation migration rate. [Abstract copyright: © 2022 The Authors. Published by American Chemical Society.] |
Keywords | General Chemical Engineering; General Chemistry |
Year | 2022 |
Journal | ACS Omega |
Journal citation | 7 (4), pp. 3185-3191 |
Publisher | American Chemical Society (ACS) |
ISSN | 2470-1343 |
Digital Object Identifier (DOI) | https://doi.org/10.1021/acsomega.1c04384 |
Web address (URL) | https://pubs.acs.org/journal/acsodf |
Funder/Client | Engineering and Physical Sciences Research Council |
Department of Scientific and Industrial Research, Ministry of Science and Technology, India | |
Royal Academy of Engineering | |
European Regional Development Fund | |
European Association of National Metrology Institutes | |
European Cooperation in Science and Technology | |
Publication dates | |
17 Dec 2021 | |
Online | 17 Jan 2022 |
Publication process dates | |
Deposited | 05 Jan 2022 |
Accepted | 17 Dec 2021 |
Accepted author manuscript | |
Supplemental file | File Access Level Open |
License | https://creativecommons.org/licenses/by-nc-nd/4.0/ |
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https://openresearch.lsbu.ac.uk/item/8yyv1
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