A Calcium Coordination
Framework Having Permanent
Porosity and High CO<sub>2</sub>/N<sub>2</sub> Selectivity
- Publication date
- Publisher
Abstract
A thermally stable, microporous calcium coordination
network shows
a reversible 5.75 wt % CO<sub>2</sub> uptake at 273 K and 1 atm pressure,
with an enthalpy of interaction of ∼31 kJ/mol and a CO<sub>2</sub>/N<sub>2</sub> selectivity over 45 under ideal flue gas conditions.
The absence of open metal sites in the activated material suggests
a different mechanism for selectivity and high interaction energy
compared to those for frameworks with open metal sites