464575 Metal-Organic Framework Membrane Process for High Purity CO2 Production

Wednesday, November 16, 2016: 12:30 PM
Plaza B (Hilton San Francisco Union Square)
Jerry Y.S. Lin1, Joshua James2, Zebao Rui3 and Alexandra Kasik3, (1)School for Engineering of Matter, Arizona State University, Tempe, AZ, (2)Chemical Engineering, Arizona State University, Tempe, AZ, (3)School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ

The development of the membrane process for CO2 capture or separation has been of great interest from the energy and environmental perspectives. Current CO2 separation membrane technologies are dominated by polymeric membranes due to their low cost and easy processibility. However, polymeric membranes suffer from CO2-induced plasticization and the trade-off between permeability and selectivity.  Zeolite membranes have also been extensively studied for CO2/N2 and CO2/CH4 separation during the past decade. Although some of them have demonstrated high selectivity for CO2 over CH4 or N2, their CO2 permeance needs to be further improved to be economically viable. Gas separation by metal-organic framework (MOF) membranes is an emerging research field. Their commercial application potential is however still rarely explored due in part to unsatisfied separation characteristics and difficulty in finding suitable applications. Herein, we report “sharp molecular sieving” properties of high quality isoreticular MOF-1 (IRMOF-1) membrane for CO2 separation from dry, CO2 enriched CO2/CH4 and CO2/N2 mixtures. The IRMOF-1 membranes exhibit CO2/CH4 and CO2/N2 separation factors of 328 and 410 with CO2 permeance of 2.55×10-7 and 2.06×10-7 mol m-2 s-1 Pa-1 at feed pressure of 5 atm and 298 K, respectively. High grade CO2 is efficiently produced from the industrial or lower grade CO2 feed gas by this MOF membrane separation process.

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See more of this Session: Membranes for Gas Separations II
See more of this Group/Topical: Separations Division