Table 5.
Different adsorption isotherms of the tested inhibitors for the corrosion of CS in 1.0 M HCl at 303K
| Adsorption isotherms | Inhibitors | Adsorption parameters | ||
|---|---|---|---|---|
| Regression coefficient (R2) | Slope | Intercept | ||
| Langmuir | HM-1223 | 0.99921 | 1.05666 | 1.80026E-7 |
| HM-1222 | 0.99975 | 1.05629 | 2.25186E-7 | |
| HM-1224 | 0.99766 | 1.09323 | 7.5455E-7 | |
| HM-1221 | 0.98697 | 1.43206 | 1.83385E-6 | |
| Freundlich | HM-1223 | 0.74772 | 0.02257 | 0.07928 |
| HM-1222 | 0.97525 | 0.05206 | 0.22904 | |
| HM-1224 | 0.9549 | 0.1481 | 0.67703 | |
| HM-1221 | 0.89234 | 0.18098 | 0.6904 | |
| Temkin | HM-1223 | 0.74011 | 0.04734 | 1.16237 |
| HM-1222 | 0.97434 | 0.10525 | 1.45618 | |
| HM-1224 | 0.95025 | 0.25099 | 2.1154 | |
| HM-1221 | 0.87266 | 0.21648 | 1.69195 | |
| Florry-Huggins | HM-1223 | 0.63907 | 2.63443 | 8.07479 |
| HM-1222 | 0.95093 | 2.25218 | 7.54432 | |
| HM-1224 | 0.91132 | 1.72566 | 6.40104 | |
| HM-1221 | 0.79081 | 3.34389 | 6.20012 | |
| Frumkin | HM-1223 | 0.85691 | 21.46338 | -23.84599 |
| HM-1222 | 0.98763 | 13.57088 | -16.52273 | |
| HM-1224 | 0.98067 | 6.19138 | -9.57126 | |
| HM-1221 | 0.93442 | 5.79804 | -8.38211 | |