A new microporous metal-organic framework with potential for highly selective separation methane from acetylene, ethylene and ethane at room temperature

A new three-dimensional microporous metal-organic framework, Cu-2(OFDI) (ZJU-61, H4OFDI = 5.5 ' -(9- oxo-9H-fluorene-2,7-diyl)diisophthalic acid) was solvothermally synthesized. ZJU-61 features a three-dimensional structure with a rare sty-a type topology and has three different types of pore apertures. With open metal sites and suitable pore spaces, ZJU-61 can readily separate methane from gas mixture at room temperature with the highest C2H2/CH4 separation selectivity of 74.4. (C) 2014 Elsevier Inc. All rights reserved.