Table 7 Activation energy (Ea), activation enthalpy (∆H*) and activation entropy (∆S*) for C-steel in 0.5 M HCl with the presence of various concentrations of AEO7 corrosion inhibitors.
From: AEO7 Surfactant as an Eco-Friendly Corrosion Inhibitor for Carbon Steel in HCl solution
Cinh µmol L−1 | Ea (kJ mol−1) | ΔH* (kJ Mol−1) | ΔS* (J mol−1 K−1) |
|---|---|---|---|
0 | 35.70 | −33.12 | −77.96 |
20 | 39.92 | −37.31 | −73.36 |
30 | 42.13 | −38.39 | −68.94 |
35 | 47.05 | −44.43 | −57.08 |
40 | 49.60 | −46.40 | −54.36 |
