Sorption-enhanced membrane materials for gas separation: a road less traveled. (June 2018)

• Record Type: Journal Article
• Authors: Omidvar, Maryam; Nguyen, Hien; Liu, Junyi; Lin, Haiqing
• Is Part Of: Current opinion in chemical engineering. Volume 20(2018)
• Page Start: 50
• Page End: 59
• Publication Date: 2018-06
• Subjects: Chemical engineering -- Periodicals; Chemical engineering; Periodicals; 660.05
• DOI: 10.1016/j.coche.2018.02.003
• Languages: English
• ISSNs: 2211-3398

Abstract

Graphical abstract: Highlights: Solubility is an under-valued tunable parameter for membrane materials design. Fluorinated polymers show superior He/gas and gas/CH4 solubility selectivity and thus permeability selectivity. Solubility-selective materials show promises for olefin/paraffin separation. Sorption can be tuned to achieve great resistance against plasticization. Abstract : Solubility and diffusivity constitute two vertically tunable parameters for designing high-performance membrane materials for gas separation. The latter approach has received great attention, yielding a wealth of size-sieving materials reported in the literature. By contrast, this review highlights recent achievements of sorption-enhanced materials with superior gas separation performance, including fluorinated polymers for He/gas and gas/CH4 separations, and polar polymers and mixed-matrix materials comprising metal–organic frameworks for olefin/paraffin separations. The under-valued solubility and solubility selectivity are powerful tools in designing materials with superior separation properties and good resistance to plasticization caused by condensable components in the feed, which, otherwise, would decrease gas selectivity.