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Corrosion Inhibition of Zinc Metal in 2M Hydrochloric Acid Solution by Using GuaifenesinDrug as an Inhibitor and Theoretical Calculations | ||
| Journal of Al-Nahrain University - Science | ||
| Article 1, Volume 18, Issue 1, 2015, Pages 60-65 | ||
| Author | ||
| Hadeel Adil | ||
| Abstract | ||
| The inhibition of the corrosion of Zinc in 2 M HCl by guaifenesin has been investigated at room temperature using weight loss measurements. Results obtained showed that guaifenesin is a good inhibitor and its inhibition efficiency (IE %) increased with the increase of inhibitor concentration since it was 81%. At 300 ppm. The surface coverage was 0.81 at 300 ppm inhibitor concentration; hence the optimum concentration was 300 ppm. Theoretical calculations investigate by studying the relationship between molecular structure and inhibition efficiency by using semi-empirical molecular quantum calculations within the PM3 method as implemented in HyperChem package. | ||
| Keywords | ||
| Inhibition efficiency; Zinc metal; guaifenesin; surface coverage | ||
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