Magnesium aminoethyl phosphonate (Mg(AEP)(H2O)): an inorganic–organic hybrid nanomaterial with high CO2 : N2 sorption selectivity†
Abstract
The inorganic–organic hybrid magnesium aminoethyl phosphonate (Mg(AEP)(H2O), particle diameter: 20 nm; specific surface area: 322(10) m2 g−1; pore volume: 0.9(1) cm3 g−1) shows reversible CO2 sorption (152(5) mg g−1) at high pressure (≤110 bar). In contrast, N2 uptake remains below 1.0(1) mg g−1. Based on this selectivity (∼100%) Mg(AEP)(H2O) expands the range of materials available for CO2 capture.