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Ultra-selective defect-free interfacially polymerized molecular sieve thin-film composite membranes for H2 purification

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Abstract

Purification is a major bottleneck in generating low-cost commercial hydrogen. In this work, inexpensive high-performance H2 separating membranes were fabricated by modifying the commercially successful interfacial polymerization production method for reverse osmosis membranes. Defect-free thin-film composite membranes were formed demonstrating unprecedented mixed-gas H2/CO2 selectivity of ≈50 at 140 °C with a H2 permeance of 350 GPU, surpassing the permeance/selectivity upper bound of all known polymer membranes by a wide margin. The combination of exceptional separation performance and low manufacturing cost makes them excellent candidates for cost-effective hydrogen purification from steam cracking and similar processes.

Graphical abstract: Ultra-selective defect-free interfacially polymerized molecular sieve thin-film composite membranes for H2 purification

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Publication details

The article was received on 05 Sep 2017, accepted on 09 Oct 2017 and first published on 10 Oct 2017


Article type: Communication
DOI: 10.1039/C7TA07819F
Citation: J. Mater. Chem. A, 2017, Advance Article
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    Ultra-selective defect-free interfacially polymerized molecular sieve thin-film composite membranes for H2 purification

    Z. Ali, F. Pacheco, E. Litwiller, Y. Wang, Y. Han and I. Pinnau, J. Mater. Chem. A, 2017, Advance Article , DOI: 10.1039/C7TA07819F

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