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Title: Relationship between crystal structure and thermo-mechanical properties of kaolinite clay: Beyond standard density functional theory

Abstract

In this study, the structural, mechanical and thermodynamic properties of 1 : 1 layered dioctahedral kaolinite clay, with ideal Al 2Si 2O 5(OH) 4 stoichiometry, were investigated using density functional theory corrected for dispersion interactions (DFT-D2). The bulk moduli of 56.2 and 56.0 GPa predicted at 298 K using the Vinet and Birch–Murnaghan equations of state, respectively, are in good agreement with the recent experimental value of 59.7 GPa reported for well-crystallized samples. The isobaric heat capacity computed for uniaxial deformation of kaolinite along the stacking direction reproduces calorimetric data within 0.7–3.0% from room temperature up to its thermal stability limit.

Authors:
 [1];  [2];  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. Univ. of Nevada, Las Vegas, NV (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:
1235370
Report Number(s):
SAND-2015-0808J
Journal ID: ISSN 1477-9226; ICHBD9; 562657
Grant/Contract Number:
AC04-94AL85000
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Dalton Transactions
Additional Journal Information:
Journal Volume: 44; Journal Issue: 28; Journal ID: ISSN 1477-9226
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English

Citation Formats

Weck, Philippe F., Kim, Eunja, and Jove-Colon, Carlos F. Relationship between crystal structure and thermo-mechanical properties of kaolinite clay: Beyond standard density functional theory. United States: N. p., 2015. Web. doi:10.1039/C5DT00590F.
Weck, Philippe F., Kim, Eunja, & Jove-Colon, Carlos F. Relationship between crystal structure and thermo-mechanical properties of kaolinite clay: Beyond standard density functional theory. United States. doi:10.1039/C5DT00590F.
Weck, Philippe F., Kim, Eunja, and Jove-Colon, Carlos F. Wed . "Relationship between crystal structure and thermo-mechanical properties of kaolinite clay: Beyond standard density functional theory". United States. doi:10.1039/C5DT00590F. https://www.osti.gov/servlets/purl/1235370.
@article{osti_1235370,
title = {Relationship between crystal structure and thermo-mechanical properties of kaolinite clay: Beyond standard density functional theory},
author = {Weck, Philippe F. and Kim, Eunja and Jove-Colon, Carlos F.},
abstractNote = {In this study, the structural, mechanical and thermodynamic properties of 1 : 1 layered dioctahedral kaolinite clay, with ideal Al2Si2O5(OH)4 stoichiometry, were investigated using density functional theory corrected for dispersion interactions (DFT-D2). The bulk moduli of 56.2 and 56.0 GPa predicted at 298 K using the Vinet and Birch–Murnaghan equations of state, respectively, are in good agreement with the recent experimental value of 59.7 GPa reported for well-crystallized samples. The isobaric heat capacity computed for uniaxial deformation of kaolinite along the stacking direction reproduces calorimetric data within 0.7–3.0% from room temperature up to its thermal stability limit.},
doi = {10.1039/C5DT00590F},
journal = {Dalton Transactions},
number = 28,
volume = 44,
place = {United States},
year = {Wed Mar 04 00:00:00 EST 2015},
month = {Wed Mar 04 00:00:00 EST 2015}
}

Journal Article:
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