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Title: Swelling properties of montmorillonite and beidellite clay minerals from molecular simulation: Comparison of temperature interlayer cation, and charge location effects

Abstract

The swelling properties of smectite clay minerals are relevant to many engineering applications including environmental remediation, repository design for nuclear waste disposal, borehole stability in drilling operations, and additives for numerous industrial processes and commercial products. We used molecular dynamics and grand canonical Monte Carlo simulations to study the effects of layer charge location, interlayer cation, and temperature on intracrystalline swelling of montmorillonite and beidellite clay minerals. For a beidellite model with layer charge exclusively in the tetrahedral sheet, strong ion–surface interactions shift the onset of the two-layer hydrate to higher water contents. In contrast, for a montmorillonite model with layer charge exclusively in the octahedral sheet, weaker ion–surface interactions result in the formation of fully hydrated ions (two-layer hydrate) at much lower water contents. Clay hydration enthalpies and interlayer atomic density profiles are consistent with the swelling results. As a result, water adsorption isotherms from grand canonical Monte Carlo simulations are used to relate interlayer hydration states to relative humidity, in good agreement with experimental findings.

Authors:
 [1];  [1];  [1];  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1235310
Alternate Identifier(s):
OSTI ID: 1237700
Report Number(s):
SAND-2015-2585J; SAND-2015-7114J
Journal ID: ISSN 1932-7447; 581952
Grant/Contract Number:  
AC04-94AL85000
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Physical Chemistry. C
Additional Journal Information:
Journal Volume: 119; Journal Issue: 36; Journal ID: ISSN 1932-7447
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; montmorillonite; beidellite; clay; swelling; simulation; molecular dynamics; grand canonical Monte Carlo; hydration; interface

Citation Formats

Teich-McGoldrick, Stephanie L., Greathouse, Jeffery A., Jove-Colon, Carlos F., and Cygan, Randall Timothy. Swelling properties of montmorillonite and beidellite clay minerals from molecular simulation: Comparison of temperature interlayer cation, and charge location effects. United States: N. p., 2015. Web. doi:10.1021/acs.jpcc.5b03253.
Teich-McGoldrick, Stephanie L., Greathouse, Jeffery A., Jove-Colon, Carlos F., & Cygan, Randall Timothy. Swelling properties of montmorillonite and beidellite clay minerals from molecular simulation: Comparison of temperature interlayer cation, and charge location effects. United States. https://doi.org/10.1021/acs.jpcc.5b03253
Teich-McGoldrick, Stephanie L., Greathouse, Jeffery A., Jove-Colon, Carlos F., and Cygan, Randall Timothy. 2015. "Swelling properties of montmorillonite and beidellite clay minerals from molecular simulation: Comparison of temperature interlayer cation, and charge location effects". United States. https://doi.org/10.1021/acs.jpcc.5b03253. https://www.osti.gov/servlets/purl/1235310.
@article{osti_1235310,
title = {Swelling properties of montmorillonite and beidellite clay minerals from molecular simulation: Comparison of temperature interlayer cation, and charge location effects},
author = {Teich-McGoldrick, Stephanie L. and Greathouse, Jeffery A. and Jove-Colon, Carlos F. and Cygan, Randall Timothy},
abstractNote = {The swelling properties of smectite clay minerals are relevant to many engineering applications including environmental remediation, repository design for nuclear waste disposal, borehole stability in drilling operations, and additives for numerous industrial processes and commercial products. We used molecular dynamics and grand canonical Monte Carlo simulations to study the effects of layer charge location, interlayer cation, and temperature on intracrystalline swelling of montmorillonite and beidellite clay minerals. For a beidellite model with layer charge exclusively in the tetrahedral sheet, strong ion–surface interactions shift the onset of the two-layer hydrate to higher water contents. In contrast, for a montmorillonite model with layer charge exclusively in the octahedral sheet, weaker ion–surface interactions result in the formation of fully hydrated ions (two-layer hydrate) at much lower water contents. Clay hydration enthalpies and interlayer atomic density profiles are consistent with the swelling results. As a result, water adsorption isotherms from grand canonical Monte Carlo simulations are used to relate interlayer hydration states to relative humidity, in good agreement with experimental findings.},
doi = {10.1021/acs.jpcc.5b03253},
url = {https://www.osti.gov/biblio/1235310}, journal = {Journal of Physical Chemistry. C},
issn = {1932-7447},
number = 36,
volume = 119,
place = {United States},
year = {Thu Aug 27 00:00:00 EDT 2015},
month = {Thu Aug 27 00:00:00 EDT 2015}
}

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Cited by: 156 works
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Works referenced in this record:

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Works referencing / citing this record:

Effects of humidity and interlayer cations on the frictional strength of montmorillonite
journal, April 2018


Near-Infrared Study of Water Adsorption on Homo-Ionic Forms of Montmorillonite
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Swelling of clay minerals: dual characteristics of K + ions and exploration of critical influencing factors
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Impact of Clay Minerals on the Dewatering of Coal Slurry: An Experimental and Molecular-Simulation Study
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Modeling the Mechanisms of Clay Damage by Molecular Dynamic Simulation
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