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. 2018 Oct 1;3(10):12369–12382. doi: 10.1021/acsomega.8b01089

Table 2. Calculation of Free Activation Energy (ΔG*) and Free Energy of Adsorption (ΔG0).

    ΔG* (kJ mol–1)
 ΔG0 (kJ mol–1)
acid concentration of inhibitor (ppm) 303 K 313 K 323 K 333 K T (K) value
1 M HCl 0 62.86 64.30 65.74 67.18 303 –8.2
18 65.04 65.91 66.94 67.97 313 –7.79
27 66.33 66.22 67.61 68.29 323 –6.43
36 69.41 69.68 69.14 68.86 333 –6.08