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. 2022 Oct 4;10:1038095. doi: 10.3389/fchem.2022.1038095

TABLE 1.

Surface parameters of the prepared silica gel at different CO2 pressures.

CO2 pressure (MPa) Specific area (m2/g) Pore volume (ml/g) Average pore diameter (nm)
0.10 224.260 0.147 2.817
0.15 431.483 0.0644 2.563
0.20 523.207 0.292 4.088
0.25 764.862 0.447 2.938
0.30 695.765 0.303 3.316