Table 1 Langmuir–Freundlich model coefficients for adsorption isotherms of CO\(_2\), CH\(_4\), and N\(_2\) on model coal-derived asphaltene at various temperatures.
From: Competitive adsorption of CO2, N2, and CH4 in coal-derived asphaltenes, a computational study
Adsorbent | T(K) | a (mL/g) | b (kPa\(^{-1}\)) | n | \(R^{2*}\) |
|---|---|---|---|---|---|
CO\(_2\) | 273 | 16.53 | 0.0791 | 1.91 | 0.9998 |
298 | 16.09 | 0.0302 | 1.70 | 0.9997 | |
323 | 14.93 | 0.0075 | 1.35 | 0.9998 | |
348 | 14.43 | 0.0056 | 1.36 | 0.9991 | |
CH\(_4\) | 273 | 13.55 | 0.0211 | 1.76 | 0.9992 |
298 | 12.91 | 0.0162 | 1.52 | 0.9989 | |
323 | 11.93 | 0.0014 | 1.34 | 0.9986 | |
348 | 11.12 | 0.0010 | 1.35 | 0.9996 | |
N\(_2\) | 273 | 9.94 | 0.0058 | 1.905 | 0.9992 |
298 | 9.45 | 0.0036 | 1.366 | 0.9991 | |
323 | 8.96 | 0.0034 | 1.256 | 0.9982 | |
348 | 8.06 | 0.0026 | 1.143 | 0.9986 |
