In this section
Our research includes exploring fundamental pore scale fluid dynamics, developing digital rocks analysis techniques, increasing the accuracy of field scale reservoir simulation, and evaluating the feasibility of scaling up CO2 storage to climate relevant scales.
StrataTrapper Advanced Modelling of CO2 Migration and Trapping
THMC4CCS: ThorougH experiMental and numerical investigation of Coupled processes for geologiC Carbon Storage
@article{Kirby:2018:10.1021/acs.jpca.8b06863,
author = {Kirby, M and Simperler, A and Krevor, S and Weiss, D and Sonnenberg, J},
doi = {10.1021/acs.jpca.8b06863},
journal = {Journal of Physical Chemistry A},
pages = {8007--8019},
title = {Computational tools for calculating log β values of geochemically relevant uranium organometallic complexes},
url = {http://dx.doi.org/10.1021/acs.jpca.8b06863},
volume = {122},
year = {2018}
}
TY - JOUR
AB - Uranium (UVI) interacts with organic ligands, subsequently controlling its aqueous chemistry. It is therefore imperative to assess the binding ability of natural organic molecules. We evidence that density functional theory (DFT) can be used as a practical protocol for predicting the stability of UVI organic ligand complexes, allowing for the development of a relative stability series for organic complexes with limited experimental data. Solvation methods and DFT settings were benchmarked to suggest a suitable off-the-shelf solution. The results indicate that the IEFPCM solvation method should be employed. A mixed solvation approach improves the accuracy of the calculated stability constant (log β); however, the calculated log β are approximately five times more favorable than experimental data. Different basis sets, functionals, and effective core potentials were tested to check that there were no major changes in molecular geometries and ΔrG. The recommended method employed is the B3LYP functional, aug-cc-pVDZ basis set for ligands, MDF60 ECP and basis set for UVI, and the IEFPCM solvation model. Using the fitting approach employed in the literature with these updated DFT settings allows fitting of 1:1 UVI complexes with root-mean-square deviation of 1.38 log β units. Fitting multiple bound carboxylate ligands indicates a second, separate fitting for 1:2 and 1:3 complexes.
AU - Kirby,M
AU - Simperler,A
AU - Krevor,S
AU - Weiss,D
AU - Sonnenberg,J
DO - 10.1021/acs.jpca.8b06863
EP - 8019
PY - 2018///
SN - 1089-5639
SP - 8007
TI - Computational tools for calculating log β values of geochemically relevant uranium organometallic complexes
T2 - Journal of Physical Chemistry A
UR - http://dx.doi.org/10.1021/acs.jpca.8b06863
UR - http://hdl.handle.net/10044/1/64110
VL - 122
ER -