Probing dynamics of carbon dioxide in a metal–organic framework under high pressure by high-resolution solid-state NMR

Abstract

The application of high-resolution NMR analysis for CO₂ adsorbed in a MOF under high pressure is reported for the first time. The results showed that CO₂ adsorbed in MOF-74 had an unusually slow mobility (τ ∼ 10⁻⁸ s). CO₂–CO₂ interactions suppressed the mobility of CO₂ under high pressure, which, in turn, would have contributed to the stability of CO₂ at the adsorption sites.