Research Article
Adsorption and Corrosion Inhibition Characteristics of Some Nicotinamide Derivatives on Mild Steel in Hydrochloric Acid Solution
Table 3
Thermodynamic parameters for adsorption of IMN and TMNon MS in 0.5 M HCl at different temperatures.
| Inhibitor | | | Slope | | | | | (°C) | (L mol−1) | (kJ mol−1) | (kJ mol−1) | (J mol−1 K−1) |
| IMN | 30 | 0.998 | 1.047 | 13888 | | 0.405 | 8.18 | 40 | 0.997 | 1.048 | 12820 | | 50 | 0.998 | 1.092 | 12345 | | 60 | 0.996 | 1.105 | 12195 | |
| TMN
| 30 | 0.999 | 0.960 | 20000 | | 0.653 | 7.72 | 40 | 0.998 | 0.969 | 17857 | | 50 | 0.998 | 0.980 | 16949 | | 60 | 0.998 | 0.996 | 16129 | |
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