Textural properties of 1a and 1b.
| Cage | BETa (m2 g−1) | S micro b (m2 g−1) | S ext. c (m2 g−1) | V total d (cm3 g−1) | V micro e (cm3 g−1) | V ext. f (cm3 g−1) | n N2 g (mmol g−1) | n CO2 g (mmol g−1) | Q st h | CO2/N2 (IAST)i |
|---|---|---|---|---|---|---|---|---|---|---|
| 1a | 522 | 312 | 210 | 0.44 | 0.2 | 0.24 | 0.31 | 2.91 | 27.0 | 26.9 |
| 1b | —j | —j | 189 | 0.34 | 0.14 | 0.20 | 0.16 | 2.00 | 27.5 | 45.5 |
a
Brunauer–Emmett–Teller (BET) surface area calculated over the pressure range (p/p0) of 0.01–0.11.
b
Micropore surface area calculated using the t-plot method.
c
S ext. = Stotal − Smicro.
d
Total pore volume obtained at p/p0 = 0.99.
e
Micropore volume calculated using the t-plot method.
f
V ext. = Vtotal − Vmicro.
g
Gas uptake (1 bar, 273 K).
h
At zero coverage.
i
Selectivity (IAST, 273 K) of CO2 over N2 adsorption.
j
Not available.