Journal
RSC ADVANCES
Volume 9, Issue 13, Pages 7128-7135Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ra00534j
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Funding
- European Union [641887]
- National Research Council of Science & Technology (NST) of the Republic of Korea [CRC 14-1-KRICT]
- Marie Curie Actions (MSCA) [641887] Funding Source: Marie Curie Actions (MSCA)
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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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