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The following data were obtained for the adsorption of n-butane on a porous solid (catalyst).
Adsorbed amount in mmol/g |
||
Pressure (kPa) |
85 °C |
150 °C |
0.67 |
0.51 |
0.13 |
1.33 |
0.85 |
0.25 |
2.67 |
0.98 |
0.40 |
5.33 |
1.09 |
0.59 |
10.67 |
1.18 |
0.76 |
21.33 |
1.25 |
0.89 |
33.33 |
1.30 |
0.96 |
If the area occupied by a n-butane molecule is 0.55 nm2 at 85 °C, estimate the surface area of the catalyst (in m2/g) assuming Langmuir adsorption isotherm.