4.7 Article

A Calcium Coordination Framework Having Permanent Porosity and High CO2/N2 Selectivity

Journal

CRYSTAL GROWTH & DESIGN
Volume 12, Issue 5, Pages 2162-2165

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/cg300274n

Keywords

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Funding

  1. Department of Energy (DOE) [DE-FG02-09ER46650, DE-FG02-08ER46491]
  2. NSF [CHE-0840483]
  3. [NSF-DMR-0800415]
  4. Direct For Mathematical & Physical Scien
  5. Division Of Chemistry [0840483] Funding Source: National Science Foundation
  6. U.S. Department of Energy (DOE) [DE-FG02-08ER46491] Funding Source: U.S. Department of Energy (DOE)

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A thermally stable, microporous calcium coordination network shows a reversible 5.75 wt % CO2 uptake at 273 K and 1 atm pressure, with an enthalpy of interaction of similar to 31 kJ/mol and a CO2/N-2 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.

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