Table 4 Values of the correlation coefficient R2, the residual root mean square coefficient RMSE and the Akaike information criterion AIC deduced from the numerical adjustment of experimental isotherms of CrCl2 on 5,10,15,20-tetrakis(4-methylphenyl) porphyrin with the statistical physics models.
Adsorption system | Chromium chloride-porphyrin | |||
|---|---|---|---|---|
Temperature (K) | 285 | 290 | 295 | 300 |
Mono-layer model (ideal gas) | ||||
R2 | 0.71 (± 0.039) | 0.77 (± 0.09) | 0.62 (± 0.05) | 0.73 (± 0.041) |
RMSE | 8.67 (± 2.67) | 8.12 (± 2.02) | 7.98 (± 1.89) | 7.56 (± 1.16) |
AIC | 32.7 (± 1.51) | 34.8 (± 2.52) | 34.78 (± 1.92) | 35.76 (± 2.54) |
Mono-layer model (real gas) | ||||
R2 | 0.79 (± 0.063) | 0.79 (± 0.06) | 0.78 (± 0.07) | 0.78 (± 0.059) |
RMSE | 5.47 (± 1.19) | 6.9 (± 2.05) | 7.34 (± 2.29) | 6.57 (± 1.51) |
AIC | 32.4 (± 2.55) | 34.7 (± 3.07) | 35.59 (± 1.85) | 33.12 (± 2.41) |
Double-layer model (ideal gas) | ||||
R2 | 0.98 (± 0.006) | 0.99 (± 0.002) | 0.98 (± 0.004) | 0.97 (± 0.006) |
RMSE | 2.08 (± 0.014) | 1.85 (± 0.065) | 1.91 (± 0.048) | 1.95 (± 0.049) |
AIC | 26.94 (± 1.78) | 26.82 (± 1.39) | 26.47 (± 3.04) | 27.41 (± 2.45) |
Double-layer model (real gas) | ||||
R2 | 0.89 (± 0.015) | 0.91 (± 0.007) | 0.90 (± 0.005) | 0.89 (± 0.009) |
RMSE | 5.79 (± 0.25) | 6.78 (± 1.34) | 5.94 (± 1.19) | 5.93 (± 0.94) |
AIC | 30.67 (± 0.08) | 31.92 (± 0.19) | 30.75 (± 0.06) | 31.98 (± 1.14) |
