Table 4 Activation Energy (Ea), enthalpy of activation (∆Ha), and entropy of activation (∆Sa) for the reinforcement steel in saline SCPS in the presence of various concentrations of Q-32 corrosion inhibitors.
Conc. of inhibitor µmol L−1 | Ea (kJ mol−1) | ΔHa (kJ Mol−1) | ΔSa (J mol−1 K−1) |
---|---|---|---|
Blank | 40.0 | 38.19 | − 87.23 |
5 | 51.0 | 49.45 | − 73.91 |
10 | 55.2 | 53.39 | − 63.65 |
15 | 68.4 | 65.84 | − 45.17 |
20 | 74.0 | 71.41 | − 31.79 |