Highly selective carbon dioxide uptake by a microporous kgm-pillared metal-organic framework with acylamide groups

摘要

A microporous acylamide-functionalized metal-organic framework with a kgm-pillared structure, [Cu(NAIP(2-))]n, has been designed by self-assembling [Cu-2(COO)(4)] paddlewheel SBUs and a novel trigonal heterofunctional ligand with a linking acylamide group. [Cu( NAIP(2-))] n exhibits a moderate BET surface area of 1060 m(2) g(-1), high CO2 uptake (4.5 wt% at 0.15 bar and 298 K; 201.8 cm(3) g(-1) at 20 bar and 298 K) and high selectivity for CO2 over CH4 (8.34) and N-2 (38.3) at 273 K.