Table 3 The specific surface area and textural characteristic (pores volume and pores diameter) estimated by N2 adsorption-desorption isotherms
From: Modified silicas with different structure of grafted methylphenylsiloxane layer
No. | S, m2/g | Pore size, Å | Pore volume, cm3/g | |||
---|---|---|---|---|---|---|
BET | BJH | t-plot | BET | BJH | BJH des. | |
1 | 126 | 105 | 118 | 195 | 223 | 0.584 |
2 | 118 | 103 | 122 | 182 | 199 | 0.510 |
3 | 133 | 118 | 152 | 146 | 155 | 0.459 |
4 | 154 | 139 | 179 | 151 | 159 | 0.551 |
5 | 139 | 129 | 163 | 173 | 178 | 0.575 |
6 | 146 | 131 | 171 | 139 | 146 | 0.479 |