Fig. 5. C₂H₂ and C₂H₄ adsorption isotherms, IAST calculations, simulated and experimental column breakthrough results.

a C₂H₂ and C₂H₄ adsorption isotherms of ZUL-100 and ZUL-200 at 298 K. b The IAST selectivities of ZUL-100 and ZUL-200 for C₂H₂/C₂H₄ mixtures. c Plots of the captured C₂H₂ amount from the simulated column breakthrough as a function of separation potential from IAST calculations for C₂H₂/C₂H₄ (1/99) separation. d Experimental column breakthrough curves for C₂H₂/C₂H₄ (1/99) mixture with ZUL-100, ZUL-200, UTSA-200a, ZU-33, and SIFSIX-2-Cu-i at 298 K and 1 bar. e Experimental C₂H₄ productivity (C₂H₂ below 40 ppm) from C₂H₂/C₂H₄ (1/99) mixture through fixed bed adsorbers packed with ZUL-100, ZUL-200 and other materials at 298 K and 1 bar. f The recyclability of ZUL-100 under multiple mixed-gas (including two cycles under moist feed stream) column breakthrough tests.