Fig. 4: Dynamic breakthrough experiments and stability tests.
From: One-step ethylene production from a four-component gas mixture by a single physisorbent
(a)–(c) Experimental breakthrough curves at 298 K for C2H4/C2H6 (1:1) (a), C2H2/C2H4/C2H6 (1:1:1) (b), and C2H2/C2H4/C2H6/CO2 (1:1:1:1) (c) separations (equimolar mixtures; total gas pressure 100 kPa; total gas flow 1.4, 2.1 and 2.8 cm3 min−1, respectively) based on Zn-atz-oba (6.3 g) packed column (C: Outlet gas concentration, C0: Inlet gas concentration). (d) Dynamic breakthrough data obtained with Zn-atz-oba fixed-bed in 1st, 5th, and 10th cycle when subjected to four-component C2H2/C2H4/C2H6/CO2 (1:1:1:1) mixture. e Four-component (1:1:1:1) breakthrough experiment in the presence of water vapor at 288 K and 100 kPa based on Zn-atz-oba (7.0 g) packed column (total gas flow of 2.8 cm3 min−1). (f) PXRD patterns of Zn-atz-oba after being subjected to air exposure and water immersion stability test conditions.
