Table 1.
Characterization parameters for mesostructured silicas.
| Silica | Channel Structure |
Particle Morphology |
L0 a (mmol SO3−/g) |
SBET
b (m2/g) |
BJH Pore Diameter c (Å) |
Pore Volume d (cm3/g) |
|---|---|---|---|---|---|---|
| SBA-15 | 1D hexagonal parallel channels | Rope-like | - | 780.0 | 56.0 | 0.80 |
| SBA-15-SO3− | 1D hexagonal parallel channels | Rope-like | 1.026 | 567.8 | 49.0 | 0.65 |
| HMS | 3D wormhole-like | Pseudo-spherical | - | 910.5 | 32.5 | 0.89 |
| HMS-SO3− | 3D wormhole-like | Pseudo-spherical | 1.105 | 707.1 | 30.3 | 0.52 |
a L0: functionalization degree. b SBET: specific surface area calculated by Brunauer–Emmett–Teller (BET) method. c BJH pore diameter: estimated by Barret–Joyner–Halenda (BJH) model applied in the desorption branch. d Pore volume: total pore volume measured at relative P/P0 = 0.97.