Exploring the Framework Hydrophobicity and Flexibility of ZIF-8: From Biofuel Recovery to Hydrocarbon Separations

Handle URI:
http://hdl.handle.net/10754/598293
Title:
Exploring the Framework Hydrophobicity and Flexibility of ZIF-8: From Biofuel Recovery to Hydrocarbon Separations
Authors:
Zhang, Ke; Lively, Ryan P.; Zhang, Chen; Chance, Ronald R.; Koros, William J.; Sholl, David S.; Nair, Sankar
Abstract:
The framework hydrophobicity and flexibility of ZIF-8 are investigated by a detailed adsorption and diffusion study of a series of probe molecules including ethanol, 1-butanol, water, hexane isomers, xylene isomers, and 1,2,4-trimethylbenzene. The prospects for using ZIF-8 in biofuel recovery and hydrocarbon separations are discussed in terms of adsorption or kinetic selectivities. ZIF-8 shows extremely low water vapor uptakes and is especially suitable for vapor phase butanol-based biofuel recovery. The extraordinary framework flexibility of ZIF-8 is demonstrated by the adsorption of hydrocarbon molecules that are much larger than its nominal pore size, such as m-xylene, o-xylene and 1,2,4-trimethylbenzene. The calculation of corrected diffusion coefficients reveals an interesting spectrum of promising kinetic hydrocarbon separations by ZIF-8. These findings confirm that a molecular sieving effect tends to occur in the sorbate molecular size range of 4-6 Å rather than around the nominal ZIF-8 pore size of 3.4 Å, due to its surprising framework flexibility. © 2013 American Chemical Society.
Citation:
Zhang K, Lively RP, Zhang C, Chance RR, Koros WJ, et al. (2013) Exploring the Framework Hydrophobicity and Flexibility of ZIF-8: From Biofuel Recovery to Hydrocarbon Separations. The Journal of Physical Chemistry Letters 4: 3618–3622. Available: http://dx.doi.org/10.1021/jz402019d.
Publisher:
American Chemical Society (ACS)
Journal:
The Journal of Physical Chemistry Letters
KAUST Grant Number:
KUS-I1-011-21
Issue Date:
7-Nov-2013
DOI:
10.1021/jz402019d
Type:
Article
ISSN:
1948-7185
Sponsors:
This material is based upon work supported partially by the following agencies: Department of Energy under Award Number DE-FOA-0000096, and Algenol Biofuels. W.J.K. also acknowledges Award No. KUS-I1-011-21 made by King Abdullah University of Science and Technology (KAUST).
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Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorZhang, Keen
dc.contributor.authorLively, Ryan P.en
dc.contributor.authorZhang, Chenen
dc.contributor.authorChance, Ronald R.en
dc.contributor.authorKoros, William J.en
dc.contributor.authorSholl, David S.en
dc.contributor.authorNair, Sankaren
dc.date.accessioned2016-02-25T13:18:08Zen
dc.date.available2016-02-25T13:18:08Zen
dc.date.issued2013-11-07en
dc.identifier.citationZhang K, Lively RP, Zhang C, Chance RR, Koros WJ, et al. (2013) Exploring the Framework Hydrophobicity and Flexibility of ZIF-8: From Biofuel Recovery to Hydrocarbon Separations. The Journal of Physical Chemistry Letters 4: 3618–3622. Available: http://dx.doi.org/10.1021/jz402019d.en
dc.identifier.issn1948-7185en
dc.identifier.doi10.1021/jz402019den
dc.identifier.urihttp://hdl.handle.net/10754/598293en
dc.description.abstractThe framework hydrophobicity and flexibility of ZIF-8 are investigated by a detailed adsorption and diffusion study of a series of probe molecules including ethanol, 1-butanol, water, hexane isomers, xylene isomers, and 1,2,4-trimethylbenzene. The prospects for using ZIF-8 in biofuel recovery and hydrocarbon separations are discussed in terms of adsorption or kinetic selectivities. ZIF-8 shows extremely low water vapor uptakes and is especially suitable for vapor phase butanol-based biofuel recovery. The extraordinary framework flexibility of ZIF-8 is demonstrated by the adsorption of hydrocarbon molecules that are much larger than its nominal pore size, such as m-xylene, o-xylene and 1,2,4-trimethylbenzene. The calculation of corrected diffusion coefficients reveals an interesting spectrum of promising kinetic hydrocarbon separations by ZIF-8. These findings confirm that a molecular sieving effect tends to occur in the sorbate molecular size range of 4-6 Å rather than around the nominal ZIF-8 pore size of 3.4 Å, due to its surprising framework flexibility. © 2013 American Chemical Society.en
dc.description.sponsorshipThis material is based upon work supported partially by the following agencies: Department of Energy under Award Number DE-FOA-0000096, and Algenol Biofuels. W.J.K. also acknowledges Award No. KUS-I1-011-21 made by King Abdullah University of Science and Technology (KAUST).en
dc.publisherAmerican Chemical Society (ACS)en
dc.subjectadsorptionen
dc.subjectdiffusionen
dc.subjectmetal-organic frameworksen
dc.subjectmolecular sievesen
dc.subjectzeolitic imidazolate frameworksen
dc.titleExploring the Framework Hydrophobicity and Flexibility of ZIF-8: From Biofuel Recovery to Hydrocarbon Separationsen
dc.typeArticleen
dc.identifier.journalThe Journal of Physical Chemistry Lettersen
dc.contributor.institutionGeorgia Institute of Technology, Atlanta, United Statesen
dc.contributor.institutionAlgenol Biofuels, , United Statesen
kaust.grant.numberKUS-I1-011-21en
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