Table 1 Xe and Kr separation performance parameters for SIFSIX-3-Cu at 298 K and 1 bar.

From: Radiation-resistant metal-organic framework enables efficient separation of krypton fission gas from spent nuclear fuel

MaterialSIFSIX-3-Cu
Xe capacitya (mmol/kg)6.74
Kr capacityb (mmol/kg)0.14
Kr capacityc (mmol/kg)0.15
Kr capacityd (mmol/kg)6.35
Xe/Kr selectivitye4.81
Kr/N2 selectivityf24.38
  1. Gas mixture 1: 400 ppm Xe, 40 ppm Kr, balanced with dry air
  2. aXe capacity at equilibrium in bed 1 for gas mixture 1.
  3. cKr capacity at equilibrium in bed 2 for gas mixture 1.
  4. eXe/Kr selectivity at equilibrium for bed 1.
  5. Gas mixture 2: 1000 ppm Kr, balanced with dry air
  6. bKr capacity at equilibrium in bed 1 for gas mixture 1.
  7. dKr capacity at equilibrium for gas mixture 2.
  8. fKr/N2 selectivity at equilibrium for gas mixture 2.