Research Article

Statistical Physics Modeling of Sorption Isotherms of Aluminum, Iron, and Indium on Tetraphenylporphyrin (H2TPP) and Tetrakis(4-tolylphenyl)porphyrin (H2TTPP): Phenomenological Investigation of Metalloporphyrins at the Molecular Level

Table 3

Values of the physicochemical parameters (, , , , , , , and ) affecting the adsorption of AlCl3, FeCl3, and InCl3 on 5,10,15,20-tetrakis(4-methylphenyl) porphyrin H2TTPP (systems (a), (b), and (c)) at five temperatures.

SystemParameters290 K300 K310 K320 K330 K

System (a): AlCl3-H2TTPP0.80 (±0.02)0.81 (±0.015)0.89 (±0.019)0.99 (±0.024)1.01 (±0.019)
281.7 (±8.2)320.6 (±9.4)366.1 (±8.9)401.9 (±10.9)450.7 (±11.7)
0.015 (±0.005)0.015 (±0.006)0.016 (±0.005)0.016 (±0.005)0.017 (±0.006)

System (b): FeCl3-H2TTPP0.71 (±0.025)0.73 (±0.015)0.79 (±0.022)0.84 (±0.019)0.89 (±0.02)
228.4 (±12.1)262.6 (±10.9)298.7 (±9.99)333.6 (±8.79)389.8 (±9.78)
0.011 (±0.004)0.011 (±0.005)0.012 (±0.006)0.011 (±0.006)0.012 (±0.007)
()8.3 (±0.2)7.2 (±0.3)6.1 (±0.4)5.8 (±0.3)5.1 (±0.5)
()2.6 (±0.1)3.2 (±0.2)3.9 (±0.2)4.8 (±0.4)5.7 (±0.4)

System (c): InCl3-H2TTPP0.63 (±0.018)0.66 (±0.023)0.69 (±0.016)0.74 (±0.022)0.82 (±0.016)
142.3 (±9.52)189.4 (±10.7)233.8 (±12.8)289.4 (±11.2)320.5 (±10.9)
0.0033 (±0.0007)0.003 (±0.008)0.0035 (±0.0003)0.0032 (±0.0009)0.0036 (±0.0004)
0.026 (±0.007)0.025 (±0.009)0.026 (±0.008)0.025 (±0.004)0.027 (±0.007)