Highly Selective Quantum Sieving of D2 from H2 by a Metal–Organic Framework As Determined by Gas Manometry and Infrared Spectroscopy

Title:
Highly Selective Quantum Sieving of D2 from H2 by a Metal–Organic Framework As Determined by Gas Manometry and Infrared Spectroscopy
Authors:
FitzGerald, Stephen; Pierce, Christopher J.; Rowsell, Jesse L. C.; Bloch, Eric D.; Mason, Jarad A.
Abstract:
The quantum sieving effect between D2 and H2 is examined for a series of metal–organic frameworks (MOFs) over the temperature range 77–150 K. Isothermal adsorption measurements demonstrate a consistently larger isosteric heat of adsorption for D2 vs H2, with the largest difference being 1.4 kJ/mol in the case of Ni-MOF-74. This leads to a low-pressure selectivity for this material that increases from 1.5 at 150 K to 5.0 at 77 K. Idealized adsorption solution theory indicates that the selectivity decreases with increasing pressure, but remains well above unity at ambient pressure. Infrared measurements on different MOF materials show a strong correlation between selectivity and the frequency of the adsorbed H2 translational band. This confirms that the separation is predominantly due to the difference in the zero-point energies of the adsorbed isotopologues.
Citation:
FitzGerald, S.A., C.J. Pierce, J.L.C. Rowsell, E.D. Bloch, and J.A. Mason, 2013. “Highly Selective Quantum Sieving of D2 from H2 by a Metal–Organic Framework As Determined by Gas Manometry and Infrared Spectroscopy.” Journal of Amercian Chemical Society 135(25): 9458-64.
Publisher:
American Chemical Society
DATE ISSUED:
2013
Department:
Physics and Astronomy
Type:
Article
PUBLISHED VERSION:
10.1021/ja402103u
PERMANENT LINK:
http://hdl.handle.net/11282/332544

Full metadata record

DC FieldValue Language
dc.contributor.authorFitzGerald, Stephenen
dc.contributor.authorPierce, Christopher J.en
dc.contributor.authorRowsell, Jesse L. C.en
dc.contributor.authorBloch, Eric D.en
dc.contributor.authorMason, Jarad A.en
dc.date.accessioned2014-10-09T12:04:52Zen
dc.date.available2014-10-09T12:04:52Zen
dc.date.issued2013en
dc.identifier.citationFitzGerald, S.A., C.J. Pierce, J.L.C. Rowsell, E.D. Bloch, and J.A. Mason, 2013. “Highly Selective Quantum Sieving of D2 from H2 by a Metal–Organic Framework As Determined by Gas Manometry and Infrared Spectroscopy.” Journal of Amercian Chemical Society 135(25): 9458-64.en
dc.identifier.issn0002-7863en
dc.identifier.urihttp://hdl.handle.net/11282/332544en
dc.description.abstractThe quantum sieving effect between D2 and H2 is examined for a series of metal–organic frameworks (MOFs) over the temperature range 77–150 K. Isothermal adsorption measurements demonstrate a consistently larger isosteric heat of adsorption for D2 vs H2, with the largest difference being 1.4 kJ/mol in the case of Ni-MOF-74. This leads to a low-pressure selectivity for this material that increases from 1.5 at 150 K to 5.0 at 77 K. Idealized adsorption solution theory indicates that the selectivity decreases with increasing pressure, but remains well above unity at ambient pressure. Infrared measurements on different MOF materials show a strong correlation between selectivity and the frequency of the adsorbed H2 translational band. This confirms that the separation is predominantly due to the difference in the zero-point energies of the adsorbed isotopologues.en
dc.language.isoen_USen
dc.publisherAmerican Chemical Societyen
dc.identifier.doi10.1021/ja402103uen
dc.subject.departmentPhysics and Astronomyen
dc.titleHighly Selective Quantum Sieving of D2 from H2 by a Metal–Organic Framework As Determined by Gas Manometry and Infrared Spectroscopyen
dc.typeArticleen
dc.identifier.journalJournal of Amercian Chemical Societyen
dc.subject.keywordIron(II)en_US
dc.subject.keywordCoordination sitesen_US
dc.subject.keywordHydrogen adsorptionen_US
dc.subject.keywordIsotope-separationen_US
dc.subject.keywordCarbon dioxideen_US
dc.subject.keywordDiffractionen_US
dc.subject.keywordZeolitesen_US
dc.subject.keywordPolymeren_US
dc.subject.keywordBinding designen_US
dc.identifier.volume135en
dc.identifier.issue25en
dc.identifier.startpage9458en
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