Boosting Ethylene/Ethane Separation within Copper(I)‐Chelated Metal–Organic Frameworks through Tailor‐Made Aperture and Specific π‐Complexation

• DOI: 10.1002/advs.201901918
• Publication Date: 2019-11-25T10:01:23Z
• Authors: Ling Zhang; Libo Li; Enlai Hu; Ling Yang; Kai Shao; Lijia Yao; Ke Jiang; Yuanjing Cui; Yu Yang; Bin Li; Banglin Chen; Guodong Qian
• Keywords: Petrochemical

Abstract The development of new materials for separating ethylene (C 2 H 4 ) from ethane 6 by adsorption is great importance in the petrochemical industry, but remains very challenging owing to their close molecular sizes and physical properties. Using isoreticular chemistry metal–organic frameworks (MOFs) enables precise design construction target with suitable aperture functional sites gas separations. Herein, it described that fine‐tuning pore size π‐complexation simultaneously microporous copper(I)‐chelated MOFs can remarkably boost C /C selectivity. judicious choice organic linkers a different number carboxyl groups UiO‐66 framework not only allows fine tuning also immobilizes copper(I) ions onto framework. tailor‐made adsorbent, Cu I @UiO‐66‐(COOH) , thus possesses optimal window chelated Cu(I) form molecules. It rapidly adsorb driven strong interactions, while effectively reducing uptake due selective size‐sieving. Therefore, this material exhibits an ultrahigh selectivity (80.8), outperforming most previously benchmark materials. exceptional separation performance validated breakthrough experiments 50/50 v/v mixtures under ambient conditions.