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Hydrogen Uptake on Coordinatively Unsaturated Metal Sites in VSB-5: Strong Binding Affinity Leading to High-Temperature D 2 /H 2 Selectivity
We examine the adsorption of hydrogen and deuterium into the nanoporous nickel phosphate, VSB-5. On the basis of gas sorption analysis, VSB-5 exhibits one of the highest measured H heats of adsorption (HOA) for hydrogen (16 kJ/mol) yet reported. This high HOA is consistent with an unusually large re...
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| Published in: | Langmuir 2017-12, Vol.33 (51), p.14586-14591 |
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| Main Authors: | , , , , , , , |
| Format: | Article |
| Language: | English |
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| cited_by | cdi_FETCH-LOGICAL-c204t-bbed3efb70335716b851df674ab2098ca6f1f46ef8f41e88a173adfb32623c623 |
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| cites | cdi_FETCH-LOGICAL-c204t-bbed3efb70335716b851df674ab2098ca6f1f46ef8f41e88a173adfb32623c623 |
| container_end_page | 14591 |
| container_issue | 51 |
| container_start_page | 14586 |
| container_title | Langmuir |
| container_volume | 33 |
| creator | Sharma, Amit Lawler, Keith V Wolffis, Jarod J Eckdahl, Christopher T McDonald, Cooper S Rowsell, Jesse L C FitzGerald, Stephen A Forster, Paul M |
| description | We examine the adsorption of hydrogen and deuterium into the nanoporous nickel phosphate, VSB-5. On the basis of gas sorption analysis, VSB-5 exhibits one of the highest measured H
heats of adsorption (HOA) for hydrogen (16 kJ/mol) yet reported. This high HOA is consistent with an unusually large red shift in the Q(1) and Q(0) hydrogen vibrational modes as measured with in situ infrared spectroscopy. The HOA for D
is measured to be 2 kJ/mol higher than that for H
. "Ideal adsorbed solution theory" analysis of H
and D
isotherms provides selectivities above 4 for deuterium at 140 K, suggesting that VSB-5 is a promising adsorbent for pressure-swing adsorption-type separations of hydrogen isotopes. |
| doi_str_mv | 10.1021/acs.langmuir.7b03580 |
| format | article |
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is measured to be 2 kJ/mol higher than that for H
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and D
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is measured to be 2 kJ/mol higher than that for H
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heats of adsorption (HOA) for hydrogen (16 kJ/mol) yet reported. This high HOA is consistent with an unusually large red shift in the Q(1) and Q(0) hydrogen vibrational modes as measured with in situ infrared spectroscopy. The HOA for D
is measured to be 2 kJ/mol higher than that for H
. "Ideal adsorbed solution theory" analysis of H
and D
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| language | eng |
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| source | American Chemical Society:Jisc Collections:American Chemical Society Read & Publish Agreement 2022-2024 (Reading list) |
| title | Hydrogen Uptake on Coordinatively Unsaturated Metal Sites in VSB-5: Strong Binding Affinity Leading to High-Temperature D 2 /H 2 Selectivity |
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