Ultra-selective defect-free interfacially polymerized molecular sieve thin-film composite membranes for H2 purification. Issue 1 (30th October 2017)

• Record Type: Journal Article
• Authors: Ali, Z.; Pacheco, F.; Litwiller, E.; Wang, Y.; Han, Y.; Pinnau, I.
• Is Part Of: Journal of materials chemistry. Volume 6:Issue 1(2018)
• Page Start: 30
• Page End: 35
• Publication Date: 2017-10-30
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c7ta07819f
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : Ultrathin, defect-free thin-film polyamide composite membranes developed for H2 /CO2 separation exhibit mixed-gas performance far exceeding all state-of-the-art polymeric membranes. 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.