Table 4 The corrosion rate and inhibition efficiency for C-steel in 2.0 M H2SO4 solution without and with IIE extract (0.5 g L-1) at 298–333 K under dynamic conditions from WL measurements.
Temperature (K) | IIE extract | CR (mg cm-2 h-1) M ± SD | ηW (%) |
|---|---|---|---|
298 | 2.0 M H2SO4 | 8.50 ± 0.23 | - |
2.0 M H2SO4 + 0.5 g L-1 IIE extract | 0.82 ± 0.02 | 90.3 | |
313 | 2.0 M H2SO4 | 15.70 ± 0.36 | - |
2.0 M H2SO4 + 0.5 g L-1 IIE extract | 1.80 ± 0.11 | 88.5 | |
323 | 2.0 M H2SO4 | 31.32 ± 0.72 | - |
2.0 M H2SO4 + 0.5 g L-1 IIE extract | 4.72 ± 0.44 | 84.9 | |
333 | 2.0 M H2SO4 | 62.77 ± 1.2 | - |
2.0 M H2SO4 + 0.5 g L-1 IIE extract | 10.98 ± 0.32 | 82.5 |
