Flow Channel with Wrinkles and Calcium Sites in a Ca-MOF for Direct One-Step Ethylene Purification from C2 Gases and...

The strategy of flow channel with wrinkles and calcium sites for single-step C₂H₄ purification from C2 gases and methanol-to-olefins (MTO) products separation was realized in FJI-Y9. The adsorption amounts showed a total reversal order of C₃H₆ > C₂H₆ > C₂H₂ > C₂H₄ at 298 K. Modeling indicated that the wrinkles and Ca²⁺ facilitated the full contact of C₃H₆ and C₂H₆. Breakthrough experiments illustrated that FJI-Y9 could yield pure C₂H₄ in a single step with a productivity of 0.78 mmol g^-1. In a lone adsorption/desorption cycle for MTO product separation, the productivities of C₃H₆ and C₂H₄ were 1.96 and 1.29 mol g^-1, standing as the highest recorded values.