dc.contributor.author |
Bambalaza, Sonwabo E
|
|
dc.contributor.author |
Langmi, Henrietta W
|
|
dc.contributor.author |
Mokaya, R
|
|
dc.contributor.author |
Musyoka, Nicholas M
|
|
dc.contributor.author |
Ren, Jianwei
|
|
dc.contributor.author |
Khotseng, LE
|
|
dc.date.accessioned |
2019-01-17T07:18:18Z |
|
dc.date.available |
2019-01-17T07:18:18Z |
|
dc.date.issued |
2018-11 |
|
dc.identifier.citation |
Bambalaza, S.E. et al. 2018. Compaction of a zirconium metal–organic framework (UiO-66) for high density hydrogen storage applications. Journal of Materials Chemistry A, vol. 6: 23569-23577 |
en_US |
dc.identifier.issn |
2050-7488 |
|
dc.identifier.issn |
2050-7496 |
|
dc.identifier.uri |
DOI: 10.1039/c8ta09227c
|
|
dc.identifier.uri |
https://pubs.rsc.org/en/content/articlelanding/2018/ta/c8ta09227c#!divAbstract
|
|
dc.identifier.uri |
https://pubs.rsc.org/en/content/articlepdf/2018/ta/c8ta09227c
|
|
dc.identifier.uri |
http://hdl.handle.net/10204/10624
|
|
dc.description |
This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material and it is not used for commercial purposes. |
en_US |
dc.description.abstract |
We report a rare case whereby a metal–organic framework (MOF), namely UiO-66, is compacted at high pressure (700 MPa or 100 000 psi) resulting in densification and improved total volumetric hydrogen storage capacity, but crucially, without compromising the total gravimetric uptake attained in the powdered form of the MOF. The applied compaction pressure is also unprecedented for MOFs as most studies have shown the MOF structure to collapse when compacted at very high pressure. The UiO-66 prepared in this study retained 98% of the original surface area and microporosity after compaction at 700 MPa, and the densified pellets achieved a total H2 uptake of 5.1 wt% at 100 bar and 77 K compared to 5.0 wt% for the UiO-66 powder. Depending on the method used to compute the volumetric uptake, the densified UiO-66 attained unprecedented volumetric capacity at 77 K and 100 bar of up to 74 g L(sup-1) (13 g L(sup-1) at 298 K) compared to 29 g L(sup-1) for the powder (6 g L(sup-1) at 298 K) using a conventional method that takes into account the packing density of the adsorbents, or 43 g L(sup-1) (compared to 35 g L(sup-1) for the powder at 77 K and 100 bar) based on a method that uses both the single crystal and skeletal densities of MOFs. However, regardless of the difference in the calculated values according to the two methods, the concept of UiO-66 compaction for improving volumetric capacity without compromising gravimetric uptake is clearly proven in this study and shows promise for the achievement of hydrogen storage targets for a single material as set by the United States Department of Energy (DOE). |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
Royal Society of Chemistry |
en_US |
dc.relation.ispartofseries |
Worklist;21835 |
|
dc.relation.ispartofseries |
Worklist;21836 |
|
dc.subject |
Metal–organic framework |
en_US |
dc.subject |
MOF |
en_US |
dc.title |
Compaction of a zirconium metal–organic framework (UiO-66) for high density hydrogen storage applications |
en_US |
dc.type |
Article |
en_US |
dc.identifier.apacitation |
Bambalaza, S. E., Langmi, H. W., Mokaya, R., Musyoka, N. M., Ren, J., & Khotseng, L. (2018). Compaction of a zirconium metal–organic framework (UiO-66) for high density hydrogen storage applications. http://hdl.handle.net/10204/10624 |
en_ZA |
dc.identifier.chicagocitation |
Bambalaza, Sonwabo E, Henrietta W Langmi, R Mokaya, Nicholas M Musyoka, Jianwei Ren, and LE Khotseng "Compaction of a zirconium metal–organic framework (UiO-66) for high density hydrogen storage applications." (2018) http://hdl.handle.net/10204/10624 |
en_ZA |
dc.identifier.vancouvercitation |
Bambalaza SE, Langmi HW, Mokaya R, Musyoka NM, Ren J, Khotseng L. Compaction of a zirconium metal–organic framework (UiO-66) for high density hydrogen storage applications. 2018; http://hdl.handle.net/10204/10624. |
en_ZA |
dc.identifier.ris |
TY - Article
AU - Bambalaza, Sonwabo E
AU - Langmi, Henrietta W
AU - Mokaya, R
AU - Musyoka, Nicholas M
AU - Ren, Jianwei
AU - Khotseng, LE
AB - We report a rare case whereby a metal–organic framework (MOF), namely UiO-66, is compacted at high pressure (700 MPa or 100 000 psi) resulting in densification and improved total volumetric hydrogen storage capacity, but crucially, without compromising the total gravimetric uptake attained in the powdered form of the MOF. The applied compaction pressure is also unprecedented for MOFs as most studies have shown the MOF structure to collapse when compacted at very high pressure. The UiO-66 prepared in this study retained 98% of the original surface area and microporosity after compaction at 700 MPa, and the densified pellets achieved a total H2 uptake of 5.1 wt% at 100 bar and 77 K compared to 5.0 wt% for the UiO-66 powder. Depending on the method used to compute the volumetric uptake, the densified UiO-66 attained unprecedented volumetric capacity at 77 K and 100 bar of up to 74 g L(sup-1) (13 g L(sup-1) at 298 K) compared to 29 g L(sup-1) for the powder (6 g L(sup-1) at 298 K) using a conventional method that takes into account the packing density of the adsorbents, or 43 g L(sup-1) (compared to 35 g L(sup-1) for the powder at 77 K and 100 bar) based on a method that uses both the single crystal and skeletal densities of MOFs. However, regardless of the difference in the calculated values according to the two methods, the concept of UiO-66 compaction for improving volumetric capacity without compromising gravimetric uptake is clearly proven in this study and shows promise for the achievement of hydrogen storage targets for a single material as set by the United States Department of Energy (DOE).
DA - 2018-11
DB - ResearchSpace
DP - CSIR
KW - Metal–organic framework
KW - MOF
LK - https://researchspace.csir.co.za
PY - 2018
SM - 2050-7488
SM - 2050-7496
T1 - Compaction of a zirconium metal–organic framework (UiO-66) for high density hydrogen storage applications
TI - Compaction of a zirconium metal–organic framework (UiO-66) for high density hydrogen storage applications
UR - http://hdl.handle.net/10204/10624
ER -
|
en_ZA |