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Article hydrogen separation performance of UiO-66-NH$_{2}$ membranes grown via liquid-phase epitaxy layer-by-layer deposition and one-pot synthesis

Micero, Alessandro; Hashem, Tawheed 1; Gliemann, Hartmut 1; Léon, Aline
1 Institut für Funktionelle Grenzflächen (IFG), Karlsruher Institut für Technologie (KIT)


The quality assurance of hydrogen fuel for mobile applications is assessed by the guidelines and directives given in the European and international standards. However, the presence of impurities in the hydrogen fuel, in particular nitrogen, water, and oxygen, is experienced in several refueling stations. Within this work, metal-organic framework (MOF)-based membranes are investigated as a fine-purification stage of the hydrogen fuel. Three H$_{2}$2/N$_{2}$ concentrations have been used to analyze the separation factor of UiO-66-NH$_{2}$ membranes prepared using the layer-by-layer (LBL) and the one-pot (OP) synthesis methods. It is shown that the separation factor for an equimolar ratio is 14.4% higher for the LBL sample compared to the OP membrane, suggesting a higher orientation and continuity of the LBL surface-supported metal-organic framework (SURMOF). Using an equimolar ratio of H$_{2}$/N$_{2}$, it is shown that selective separation of hydrogen over nitrogen occurs with a separation factor of 3.02 and 2.64 for the SURMOF and MOF membrane, respectively. To the best of our knowledge, this is the highest reported performance for a single-phase UiO-66-NH$_{2}$ membrane. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000138924
Veröffentlicht am 13.10.2021
DOI: 10.3390/membranes11100735
Zitationen: 8
Zitationen: 9
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Funktionelle Grenzflächen (IFG)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 2077-0375
KITopen-ID: 1000138924
HGF-Programm 43.33.11 (POF IV, LK 01) Adaptive and Bioinstructive Materials Systems
Erschienen in Membranes
Verlag MDPI
Band 11
Heft 10
Seiten 735
Nachgewiesen in Dimensions
Web of Science
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