Controllable inverse C2H2/CO2 separation in ultra-stable Zn-organic frameworks for efficient removal of trace CO2 from acetylene

Ultra-stable Zn-organic frameworks with controllable inverse adsorption separation of C 2 H 2 /CO 2 demonstrate extraordinary CO 2 -preferred selectivity and a remarkable productivity of C 2 H 2 with an extra-high purity of more than 99.9% from the CO 2 /C 2 H 2 (1/99) mixture.