Volume 27, Issue 3 pp. 472-478
Full Paper

Molecular Simulation Study of Hexane Diffusion in Dynamic Metal-Organic Frameworks

Chunyu XUE

Chunyu XUE

Laboratory of Computational Chemistry, Department of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China

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Chongli ZHONG

Chongli ZHONG

Tel.: 0086-010-64419862

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First published: 02 April 2009
Citations: 9

Abstract

The modified MM3 force field for describing flexible IRMOF-1 was extended to include other IRMOFs, and a molecular dynamics simulation study was performed on hexane diffusion in IRMOF-1 and IRMOF-16. The self-diffusion coefficients and diffusion pathways of hexane, as well as the mobility of the frameworks were investigated, as a function of both temperature and loading. The results revealed that the diffusion pathway of hexane was largely influenced by loading, and the flexibility of IRMOF-16 was much larger than that of IRMOF-1. The microscopic information obtained is useful for understanding the diffusion mechanism of chain molecules in dynamic MOF.

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