| 초록 |
Carbon molecular sieve (CMS)/alumina composite membrane module was manufactured using siloxane-containing polyimide precursors. Commercial α-alumina substrates were treated with γ-boehmite sol, and calcinated into surface-modified alumina supports. Poly (imide siloxane) and Matrimid 5218 were used as polymeric precursors, dip-coated onto alumina supports, and pyrolyzed at 600oC. Gas permeation characteristics of the 330cm2 area of membrane module were measured using pressure gauges, mass flow controllers and gas chromatograph (GC) instrument. In single gas permeation test, the module exhibited high fluxes and selectivities to N2 gas. In mixed gas separation experiment, the selectivities were 7 and 29 for O2/N2 and CO2/N2 mixtures at room temperature. |
