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Title: Ab initio molecular dynamics determination of competitive O2 vs. N2 adsorption at open metal sites of M2 (dobdc)

Abstract

The separation of oxygen from nitrogen using metal–organic frameworks (MOFs) is of great interest for potential pressure-swing adsorption processes for the generation of purified O2 on industrial scales. This study uses ab initio molecular dynamics (AIMD) simulations to examine for the first time the pure-gas and competitive gas adsorption of O2 and N2 in the M2(dobdc) (M = Cr, Mn, Fe) MOF series with coordinatively unsaturated metal centers. Effects of metal, temperature, and gas composition are explored. Lastly, this unique application of AIMD allows us to study in detail the adsorption/desorption processes and to visualize the process of multiple guests competitively binding to coordinatively unsaturated metal sites of a MOF.

Authors:
 [1];  [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:
1335666
Report Number(s):
SAND2016-9211J
Journal ID: ISSN 1463-9076; PPCPFQ; 649558
Grant/Contract Number:  
AC04-94AL85000
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Chemistry Chemical Physics. PCCP
Additional Journal Information:
Journal Volume: 18; Journal Issue: 16; Journal ID: ISSN 1463-9076
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Parkes, Marie V., Greathouse, Jeffery A., Hart, David B., Sava Gallis, Dorina F., and Nenoff, Tina M. Ab initio molecular dynamics determination of competitive O2 vs. N2 adsorption at open metal sites of M2 (dobdc). United States: N. p., 2016. Web. doi:10.1039/c6cp00768f.
Parkes, Marie V., Greathouse, Jeffery A., Hart, David B., Sava Gallis, Dorina F., & Nenoff, Tina M. Ab initio molecular dynamics determination of competitive O2 vs. N2 adsorption at open metal sites of M2 (dobdc). United States. https://doi.org/10.1039/c6cp00768f
Parkes, Marie V., Greathouse, Jeffery A., Hart, David B., Sava Gallis, Dorina F., and Nenoff, Tina M. 2016. "Ab initio molecular dynamics determination of competitive O2 vs. N2 adsorption at open metal sites of M2 (dobdc)". United States. https://doi.org/10.1039/c6cp00768f. https://www.osti.gov/servlets/purl/1335666.
@article{osti_1335666,
title = {Ab initio molecular dynamics determination of competitive O2 vs. N2 adsorption at open metal sites of M2 (dobdc)},
author = {Parkes, Marie V. and Greathouse, Jeffery A. and Hart, David B. and Sava Gallis, Dorina F. and Nenoff, Tina M.},
abstractNote = {The separation of oxygen from nitrogen using metal–organic frameworks (MOFs) is of great interest for potential pressure-swing adsorption processes for the generation of purified O2 on industrial scales. This study uses ab initio molecular dynamics (AIMD) simulations to examine for the first time the pure-gas and competitive gas adsorption of O2 and N2 in the M2(dobdc) (M = Cr, Mn, Fe) MOF series with coordinatively unsaturated metal centers. Effects of metal, temperature, and gas composition are explored. Lastly, this unique application of AIMD allows us to study in detail the adsorption/desorption processes and to visualize the process of multiple guests competitively binding to coordinatively unsaturated metal sites of a MOF.},
doi = {10.1039/c6cp00768f},
url = {https://www.osti.gov/biblio/1335666}, journal = {Physical Chemistry Chemical Physics. PCCP},
issn = {1463-9076},
number = 16,
volume = 18,
place = {United States},
year = {Mon Apr 04 00:00:00 EDT 2016},
month = {Mon Apr 04 00:00:00 EDT 2016}
}

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Cited by: 25 works
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Works referencing / citing this record:

On the elusive nature of oxygen binding at coordinatively unsaturated 3d transition metal centers in metal–organic frameworks
journal, January 2017


Structure and electronic properties of rare earth DOBDC metal–organic-frameworks
journal, January 2019