Dynamic breakthrough experiments were conducted using an equimolar C2H4/C2H6 mixture (50/50, v/v) with a flow rate of 2 mL/min at 298 K and 1 bar (Fig. ). Consistent with simulation results, Li-2-SAPO-RHO demonstrated excellent separation performance (fig. ). C2H6 eluted first, rapidly reaching its equilibrium concentration with no detectable C2H4 (detection limit: 0.01%). Meanwhile, C2H4 was selectively adsorbed, with a significant delay of 53 minutes before elution. The captured amount of C2H4 was 1.5 mmol/g, approximate to its equilibrium adsorption capacity of 2.0 mmol/g at 298 K and 0.5 bar.