First principles Monte Carlo simulations of unary and binary adsorption: CO2, N2, and H2O in Mg-MOF-74
- Univ. of Minnesota, Minneapolis, MN (United States). Department of Chemistry and Chemical Theory Center
- Univ. of Minnesota, Minneapolis, MN (United States). Department of Chemistry and Chemical Theory Center and Department of Chemical Engineering and Materials Science
- Univ. of California, Berkeley, CA (United States). Department of Chemistry and Chemical & Biomolecular Engineering; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division
- Univ. of Minnesota, Minneapolis, MN (United States). Department of Chemical Engineering and Materials Science
Dative bonding of adsorbate molecules onto coordinatively-unsaturated metal sites in metal–organic frameworks can lead to unique adsorption selectivities. However, the distortion of the electron density during dative bonding poses a challenge for force-field-based simulations. Here in this paper, we report first principles Monte Carlo simulations with the PBE-D3 functional for the adsorption of CO2, N2, and H2O in Mg-MOF-74, and obtain accurate predictions of the unary isotherms without any of the adjustments or fitting often required for systems with strong adsorption sites. Lastly, simulations of binary CO2/N2 and H2O/CO2 mixtures yield selectivities of 200 and 160, respectively, and indicate that predictions from ideal adsorbed solution theory need to be viewed with caution.
- Research Organization:
- Univ. of Minnesota, Minneapolis, MN (United States). Nanoporous Materials Genome Center
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences, and Biosciences Division
- Contributing Organization:
- Argonne Leadership Computing Facility; Minnesota Supercomputing Institute
- Grant/Contract Number:
- SC0008688; FG02-17ER16362; AC02-06CH11357; De-AC02-06CH11357
- OSTI ID:
- 1477218
- Alternate ID(s):
- OSTI ID: 1467129
- Journal Information:
- ChemComm, Vol. 54, Issue 77; ISSN 1359-7345
- Publisher:
- Royal Society of ChemistryCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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