Gate opening of zeolitic imidazolate frameworks (ZIFs) is an important microscopic phenomenon in explaining the adsorption, diffusion, and separation processes for large guest molecules. We present a force field, with input from density functional theory (DFT) calculations, for the molecular dynamics simulation on the gate opening in ZIF-8. The computed self-diffusivities for sorbed C1 to C3 hydrocarbons were in good agreement with the experimental values. The observed sharp diffusion separation from C2H6 to C3H8 was elucidated by investigating the conformations of the guest molecules integrated with the flexibility of the host framework. © 2013 American Chemical Society.
|Original language||English (US)|
|Number of pages||8|
|State||Published - Jun 28 2013|
Bibliographical noteKAUST Repository Item: Exported on 2020-10-01
Acknowledgements: We are grateful for the generous financial support from the King Abdullah University of Science and Technology. We thank Dr. Marco Sant for useful discussions. Y. Pan acknowledges SABIC for a postdoctoral fellowship (35000000012-04).
ASJC Scopus subject areas
- Materials Science(all)
- Surfaces and Interfaces
- Condensed Matter Physics