期刊
DALTON TRANSACTIONS
卷 44, 期 28, 页码 12550-12560出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5dt00590f
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资金
- U.S. Department of Energy's National Nuclear Security Administration [DE-AC04-94AL85000]
- Used Fuel Disposition Campaign of the U.S. Department of Energy's Office of Nuclear Energy
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.
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