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Nanoscale MOF/organosilica membranes on tubular ceramic substrates for highly selective gas separation

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Abstract

In this study, we present a general and efficient strategy to design and prepare novel MOF-based hybrid membranes on a tubular ceramic substrate. Thin and compact MOF/organosilica nano-composite membranes can be rationally formed and tightly bound with the tubular ceramic substrate. The resulting membranes display high gas separation performance with both high selectivity and high permeation rate, which can be well correlated to the parent MOFs. The as-prepared ZIF-8 and MIL-53-NH2 incorporated organosilica nanocomposite membranes have been demonstrated as some of the best performing MOF-based membranes for highly H2- (H2/CH4 selectivity = 26.5, H2 permeance = 1.06 × 10−6 mol m−2 s−1 Pa−1) and CO2-selective (CO2/CH4 selectively = 18.2, CO2 permeance = 1.44 × 10−7 mol m−2 s−1 Pa−1) separations, for H2/CH4 (1 : 1) and CO2/CH4 (1 : 1) mixtures at room temperature, respectively.

Graphical abstract: Nanoscale MOF/organosilica membranes on tubular ceramic substrates for highly selective gas separation

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Publication details

The article was received on 24 Mar 2017, accepted on 07 Jul 2017 and first published on 07 Jul 2017


Article type: Paper
DOI: 10.1039/C7EE00830A
Citation: Energy Environ. Sci., 2017, Advance Article
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    Nanoscale MOF/organosilica membranes on tubular ceramic substrates for highly selective gas separation

    C. Kong, H. Du, L. Chen and B. Chen, Energy Environ. Sci., 2017, Advance Article , DOI: 10.1039/C7EE00830A

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