1 research outputs found
The Chemistry of CO<sub>2</sub> Capture in an Amine-Functionalized Metal–Organic Framework under Dry and Humid Conditions
The use of two primary
alkylamine functionalities covalently tethered
to the linkers of IRMOF-74-III results in a material that can uptake
CO<sub>2</sub> at low pressures through a chemisorption mechanism.
In contrast to other primary amine-functionalized solid adsorbents
that uptake CO<sub>2</sub> primarily as ammonium carbamates, we observe
using solid state NMR that the major chemisorption product for this
material is carbamic acid. The equilibrium of reaction products also
shifts to ammonium carbamate when water vapor is present; a new finding
that has impact on control of the chemistry of CO<sub>2</sub> capture
in MOF materials and one that highlights the importance of geometric
constraints and the mediating role of water within the pores of MOFs