Table 1. Summary of porosity parameters and comparison of R22 sorption performance for 1–3 .
Species | d a a [Å2] | Cavity [Å3] | Void [%] | V c b [cm3 g–1] | S BET c [m2 g–1] | m 273 d [g g–1] | m 313 d [g g–1] | Δm e [g g–1] | D s [cm2 s–1] |
1 | 6.6 × 5.8 | 9.4 × 9.9 × 13.2 | 63.4 | 0.798 | 2032 | 0.91 | 0.74 | 0.46 (0.13 bar) | 5.6 × 10–7 |
2 | 3.0 × 5.8 | 9.4 × 9.9 × 13.2 | 60.7 | 0.723 | 1787 | 0.82 | 0.66 | 0.41 (0.11 bar) | 5.1 × 10–7 |
3 | 6.6 × 10.0 | 9.4 × 9.9 × 15.9 | 69.5 | 1.071 | 2742 | 1.17 | 0.73 | 0.72 (0.52 bar) | 7.3 × 10–7 |
aThe apertures sizes along the a-axis.
bThe pore volumes estimated from crystal structures.
cMeasured BET surface areas.
d m 273 and m 313: R22 uptakes at 273 and 313 K, 1 bar, respectively.
eΔm: the highest working capacities between 273 and 313 K (at corresponding working pressures).