Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 54, Issue 10, Pages 3028-3032Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201411550
Keywords
layered compounds; membranes; metal-organic frameworks; post-synthetic modification; solvothermal growth
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Funding
- Alexander von Humboldt Foundation
- EU CARENA [263007]
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Separation methods based on 2D interlayer galleries are currently gaining widespread attention. The potential of such galleries as high-performance gas-separation membranes is however still rarely explored. Besides, it is well recognized that gas permeance and separation factor are often inversely correlated in membrane-based gas separation. Therefore, breaking this trade-off becomes highly desirable. Here, the gas-separation performance of a 2D laminated membrane was improved by its partial self-conversion to metal-organic frameworks. A ZIF-8-ZnAl-NO3 layered double hydroxide (LDH) composite membrane was thus successfully prepared in one step by partial conversion of the ZnAl-NO3 LDH membrane, ultimately leading to a remarkably enhanced H-2/CH4 separation factor and H-2 permeance.
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