Investigating the effect of alumina shaping on the sorption properties of promising metal-organic frameworksopen access
- Authors
- Iacomi, P[Iacomi, Paul]; Lee, UH[Lee, U-Hwang]; Valekar, AH[Valekar, Anil H.]; Chang, JS[Chang, Jong-San]; Llewellyn, PL[Llewellyn, Philip L.]
- Issue Date
- 2019
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- RSC ADVANCES, v.9, no.13, pp.7128 - 7135
- Indexed
- SCIE
SCOPUS
- Journal Title
- RSC ADVANCES
- Volume
- 9
- Number
- 13
- Start Page
- 7128
- End Page
- 7135
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/16197
- DOI
- 10.1039/c9ra00534j
- ISSN
- 2046-2069
- Abstract
- Three promising MOF candidates, UiO-66(Zr), MIL-100(Fe) and MIL-127(Fe) are shaped through granulation with a -alumina binder. Subsequently, changes in the surface characteristics and adsorption performance are evaluated through adsorption microcalorimetry at 303 K with several common probes (N-2, CO2, CO, CH4, C2H6, C3H8, C3H6 and C4H10), generating a detailed picture of adsorbate-adsorbent interactions. Vapour adsorption experiments with water and methanol were further used to gauge changes in hydrophobicity caused by the addition of the alumina binder. Upon shaping, a decrease in gravimetric capacity and specific surface area is observed, accompanied by an increased capacity on a volumetric basis, attributed to densification induced by the shaping process, as well as a surprising lack of pore environment changes. However, the magnitude of these effects depends on the MOF, suggesting a high dependence on material structure. Out of the three materials, MIL-127(Fe) shows the least changes in adsorption performance and is highlighted as a promising candidate for further study.
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