| 초록 |
Microporous 3D graphene-like carbons were synthesized using the recently developed Ca2+ ion-catalyzed synthesis method in Faujasite (FAU)-, EMT-, and beta-zeolite templates. FAU-, EMT-, and beta zeolite-templated carbons with respective faithfully constructed pore diameters of 1.2, 1.1, and 0.9 nm and very large surface areas (2,700–3,200 m2 g-1) are available. We have discovered that these schwarzite-like carbons exhibit preferential adsorption of ethane over ethylene at pressures in the range of 1–10 bar. The curved graphene structure, consisting of a diverse range of carbon polygons with a narrow pore size of ~1 nm, provides abundant adsorption sites in micropores and retains its ethane selectivity at pressures up to 10 bar. Based on these adsorption results, a simple breakthrough separation procedure using a C2H4/C2H6 gas mixture (9:1 molar ratio) is demonstrated to produce ethylene with a purity of 99.9%. |
