Volume 127, Issue 10 pp. 3071-3075
Zuschrift

Remarkably Enhanced Gas Separation by Partial Self-Conversion of a Laminated Membrane to Metal–Organic Frameworks

Dr. Yi Liu

Corresponding Author

Dr. Yi Liu

Institute of Physical Chemistry and Electrochemistry, Leibniz University Hannover, Callinstr. 22, 30167 Hannover (Germany)

Institute of Physical Chemistry and Electrochemistry, Leibniz University Hannover, Callinstr. 22, 30167 Hannover (Germany)Search for more papers by this author
Dr. Jia Hong Pan

Dr. Jia Hong Pan

Department of Materials Science and Engineering, National University of Singapore, 5 Engineering Drive 2, 117579 (Singapore)

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Nanyi Wang

Nanyi Wang

Institute of Physical Chemistry and Electrochemistry, Leibniz University Hannover, Callinstr. 22, 30167 Hannover (Germany)

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Frank Steinbach

Frank Steinbach

Institute of Physical Chemistry and Electrochemistry, Leibniz University Hannover, Callinstr. 22, 30167 Hannover (Germany)

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Dr. Xinlei Liu

Dr. Xinlei Liu

Department of Chemical Engineering, Imperial College London, London SW7 2AZ (UK)

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Prof. Jürgen Caro

Corresponding Author

Prof. Jürgen Caro

Institute of Physical Chemistry and Electrochemistry, Leibniz University Hannover, Callinstr. 22, 30167 Hannover (Germany)

Institute of Physical Chemistry and Electrochemistry, Leibniz University Hannover, Callinstr. 22, 30167 Hannover (Germany)Search for more papers by this author
First published: 21 January 2015
Citations: 44

Yi Liu is grateful for the financial support from Alexander von Humboldt Foundation. We gratefully acknowledge financial support by EU CARENA (FP7-NMP-2010-LARGE-4, Nr. 263007).

Abstract

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 H2/CH4 separation factor and H2 permeance.

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