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Issue 6, 2016
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Plasticization-resistant Ni2(dobdc)/polyimide composite membranes for the removal of CO2 from natural gas

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Abstract

We demonstrate that the incorporation of Ni2(dobdc) metal–organic framework nanocrystals into various polyimides can improve the performance of membranes for separating CO2 from CH4 under mixed-gas conditions. Four upper-bound 6FDA-based polyimides, as well as the commercial polymer Matrimid®, show improved selectivity under mixed-gas feeds when loaded with 15–25 wt% Ni2(dobdc), while the neat polyimides show diminishing selectivity upon increasing feed pressure. This approach presents an alternative to chemical crosslinking for achieving plasticization resistance, with the added benefit of retaining or increasing permeability while simultaneously reducing chain mobility.

Graphical abstract: Plasticization-resistant Ni2(dobdc)/polyimide composite membranes for the removal of CO2 from natural gas

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Publication details

The article was received on 22 Mar 2016, accepted on 05 May 2016 and first published on 05 May 2016


Article type: Communication
DOI: 10.1039/C6EE00865H
Citation: Energy Environ. Sci., 2016,9, 2031-2036

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    Plasticization-resistant Ni2(dobdc)/polyimide composite membranes for the removal of CO2 from natural gas

    J. E. Bachman and J. R. Long, Energy Environ. Sci., 2016, 9, 2031
    DOI: 10.1039/C6EE00865H

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