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Efrem Daniel Braun

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Publications associées (7)

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Combined Nuclear Magnetic Resonance and Molecular Dynamics Study of Methane Adsorption in M-2(dobdc) Metal-Organic Frameworks

Berend Smit, Efrem Daniel Braun, Rocio Mercado, Amber Kashan Mace

We examine the diffusion of methane in the metal organic frameworks M-2(dobdc) (M = Mg, Ni, Zn; dobdc(4-) = 2,5-diwddo-1,4-benzenedicarboxylate) as a function of methane loading through a combination of nuclear magnetic resonance and molecular dynamics sim ...

2019

Anomalous Effects of Velocity Rescaling Algorithms: The Flying Ice Cube Effect Revisited

Berend Smit, Seyedmohamad Moosavi, Efrem Daniel Braun

The flying ice cube effect is a molecular dynamics simulation artifact in which the use of velocity rescaling thermostats sometimes causes violation of the equipartition theorem, affecting both structural and dynamic properties. The reason for this artifac ...

2018

Adsorbate-induced lattice deformation in IRMOF-74 series

Berend Smit, Cory Matthew Simon, Matthew David Witman, Efrem Daniel Braun, Davide Tiana, Sudabeh Jawahery

IRMOF-74 analogues are among the most widely studied metal-organic frameworks ( MOFs) for adsorption applications because of their one-dimensional channels and high metal density. Most studies involving the IRMOF-74 series assume that the crystal lattice i ...

Springer Nature2017

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We combined nuclear magnetic resonance (NMR) and molecular dynamics (MD) simulation to study xylene behavior in MOF-5, probing the effects of adsorbate geometry in a weakly interacting model isotropic metal organic framework (MOF) system. We employed NMR d ...

American Chemical Society2017

Statistical mechanical model of gas adsorption in porous crystals with dynamic moieties

Berend Smit, Cory Matthew Simon, Efrem Daniel Braun

Some nanoporous, crystalline materials possess dynamic constituents, for example, rotatable moieties. These moieties can undergo a conformation change in response to the adsorption of guest molecules, which qualitatively impacts adsorption behavior. We pos ...

National Academy of Sciences2017

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With the growth of natural gas as an energy source, upgrading CO2-contaminated supplies has become increasingly important. Here we develop a single metric that captures how well an adsorbent performs the separation of CH4 and CO2, and we then use this metr ...

Royal Soc Chemistry2016

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Molecular simulations and NMR relaxometry experiments demonstrate that pure benzene or xylene confined in isoreticular metal-organic frameworks (IRMOFs) exhibit true vapor-liquid phase equilibria where the effective critical point may be reduced by tuning ...

Wiley-Blackwell2015