Issue 1, 2018

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

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

Supplementary files

Article information

Article type
Communication
Submitted
05 Sep 2017
Accepted
09 Oct 2017
First published
10 Oct 2017

J. Mater. Chem. A, 2018,6, 30-35

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, 2018, 6, 30 DOI: 10.1039/C7TA07819F

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