Details
| Original language | English |
|---|---|
| Article number | 110823 |
| Journal | Microporous and Mesoporous Materials |
| Volume | 313 |
| Early online date | 9 Dec 2020 |
| Publication status | Published - Jan 2021 |
Abstract
Due to their rationally controlled pore size and easy functionalization, metal-organic frameworks (MOFs) are a promising candidate for membrane separation. As one of the most stable MOFs, UiO-66 has attracted intense attention for the preparation of molecular sieving membranes. A new post-synthesis modification (PSM) strategy was developed to enhance the separation selectivity of supported UiO-66-NH2 membranes on porous ceramic tubes called UiO-66-NH2@SA by using salicylaldehyde (SA) modification. The mixed gas separation factors of H2/CO2 and H2/CH4 can be improved due to constrictions of the pore size through reaction of –NH2 with SA giving iminophenol moieties. Notably, SA-modified UiO-66-NH2 membranes are rather stable, at a high operation temperature of 200 °C and 1 bar, mixture separation factors of 11.3 for H2/CO2 and 22 for H2/CH4 can be obtained. Further, no obvious performance degradation has been observed after 3 months storing in air. This high stability of UiO-66-NH2@SA membrane could provide possibility for the industrial applications of hydrogen separation and purification.
Keywords
- Hydrogen purification, Metal-organic frameworks membranes, Post-synthetic modification (PSM), UiO-66-NH membrane
ASJC Scopus subject areas
- Chemistry(all)
- General Chemistry
- Materials Science(all)
- General Materials Science
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Mechanics of Materials
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In: Microporous and Mesoporous Materials, Vol. 313, 110823, 01.2021.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Post-synthetic modification of highly stable UiO-66-NH2 membranes on porous ceramic tubes with enhanced H2 separation
AU - Guo, Hao
AU - Liu, Jiaqin
AU - Li, Yanhong
AU - Caro, Jürgen
AU - Huang, Aisheng
N1 - Funding Information: Financially supported by the National Natural Science Foundation of China ( 22075084 and 21878100 ) and German Science Foundation ( Ca 147/21 ) is acknowledged.
PY - 2021/1
Y1 - 2021/1
N2 - Due to their rationally controlled pore size and easy functionalization, metal-organic frameworks (MOFs) are a promising candidate for membrane separation. As one of the most stable MOFs, UiO-66 has attracted intense attention for the preparation of molecular sieving membranes. A new post-synthesis modification (PSM) strategy was developed to enhance the separation selectivity of supported UiO-66-NH2 membranes on porous ceramic tubes called UiO-66-NH2@SA by using salicylaldehyde (SA) modification. The mixed gas separation factors of H2/CO2 and H2/CH4 can be improved due to constrictions of the pore size through reaction of –NH2 with SA giving iminophenol moieties. Notably, SA-modified UiO-66-NH2 membranes are rather stable, at a high operation temperature of 200 °C and 1 bar, mixture separation factors of 11.3 for H2/CO2 and 22 for H2/CH4 can be obtained. Further, no obvious performance degradation has been observed after 3 months storing in air. This high stability of UiO-66-NH2@SA membrane could provide possibility for the industrial applications of hydrogen separation and purification.
AB - Due to their rationally controlled pore size and easy functionalization, metal-organic frameworks (MOFs) are a promising candidate for membrane separation. As one of the most stable MOFs, UiO-66 has attracted intense attention for the preparation of molecular sieving membranes. A new post-synthesis modification (PSM) strategy was developed to enhance the separation selectivity of supported UiO-66-NH2 membranes on porous ceramic tubes called UiO-66-NH2@SA by using salicylaldehyde (SA) modification. The mixed gas separation factors of H2/CO2 and H2/CH4 can be improved due to constrictions of the pore size through reaction of –NH2 with SA giving iminophenol moieties. Notably, SA-modified UiO-66-NH2 membranes are rather stable, at a high operation temperature of 200 °C and 1 bar, mixture separation factors of 11.3 for H2/CO2 and 22 for H2/CH4 can be obtained. Further, no obvious performance degradation has been observed after 3 months storing in air. This high stability of UiO-66-NH2@SA membrane could provide possibility for the industrial applications of hydrogen separation and purification.
KW - Hydrogen purification
KW - Metal-organic frameworks membranes
KW - Post-synthetic modification (PSM)
KW - UiO-66-NH membrane
UR - http://www.scopus.com/inward/record.url?scp=85097879072&partnerID=8YFLogxK
U2 - 10.1016/j.micromeso.2020.110823
DO - 10.1016/j.micromeso.2020.110823
M3 - Article
AN - SCOPUS:85097879072
VL - 313
JO - Microporous and Mesoporous Materials
JF - Microporous and Mesoporous Materials
SN - 1387-1811
M1 - 110823
ER -