Molecular Simulations of the Chain Length Dependent Adsorption of C7‐C14 n‐Alkanes in ZIF‐8
Journal Article
·
· Chemie-Ingenieur-Technik
- Northwestern Univ., Evanston, IL (United States). Dept. of Chemical and Biological Engineering; Univ. of Manchester (United Kingdom)
- Northwestern Univ., Evanston, IL (United States). Dept. of Chemical and Biological Engineering
Recent experiments show that the diffusivities of C8 and C10 n-alkanes in ZIF-8 are higher than those of C7 and C9, respectively. We investigated this unusual ‘odd-even' effect by simulating the adsorption of C7-C14 n-alkanes in ZIF-8 using hybrid Monte Carlo molecular simulations. The resultant adsorption isotherms, guest-host energies, isosteric heats, and chain length distributions are analyzed for trends among the n-alkanes. ZIF-8 cages filled with n-alkanes are characterized using a combination of image processing and data science to quantify the differences in packing that occur with chain length. In conclusion, results indicate that packing changes drastically from C7 to C8 and from C9 to C10, which is consistent with the diffusion trends previously reported in experiments.
- Research Organization:
- Northwestern Univ., Evanston, IL (United States); Univ. of California, Oakland, CA (United States)
- Sponsoring Organization:
- National Energy Research Scientific Computing Center (NERSC); USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
- Grant/Contract Number:
- AC02-05CH11231; FG02-08ER15967
- Other Award/Contract Number:
- BES-ERCAP0023154
- OSTI ID:
- 2575872
- Alternate ID(s):
- OSTI ID: 1994438
- Journal Information:
- Chemie-Ingenieur-Technik, Journal Name: Chemie-Ingenieur-Technik Journal Issue: 11 Vol. 95; ISSN 0009-286X; ISSN 1522-2640
- Publisher:
- WileyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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