Abstract

AL-SAEED, Arwa H. M.; AL-SAWAAD, Hadi Z.  and  AL-ALYAUIE, Esraa A.. Alkaloid Extract of Laurus Nobilis Leaves as Anti-oxidant and Corrosion Inhibitor for a Fe Alloy in an HCl Environment. Port. Electrochim. Acta [online]. 2023, vol.41, n.4, pp.263-272.  Epub Aug 30, 2023. ISSN 0872-1904.  https://doi.org/10.4152/pea.2023410401.

In this study, an alkaloid was extracted from LN leaves. The AE was firstly evaluated as AO, by using a DPPH solution, and comparing it with a BHT standard solution. The AE, at 200 mg/mL, showed high efficiency as AO (93%). Furthermore, it was studied as a CI for an Fe alloy in HCl, at 25 ºC, with different C (1 to 5 ppm). The AE depicted the highest IE(%) of 92.42%, at 5 ppm. T effect on IE(%), for optimal C (5 ppm), was studied at 35, 45 and 55 ºC. The results revealed that the IE(%) decreased with higher T. Additionally, kinetic parameters, such as Ea*, (H* and (S*, were calculated.

Keywords : AE; LN; AO; corrosion inhibitors; DPPH.

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