On March 31, 2020, Ben Harb, Marwa; Abubshait, Samar; Etteyeb, Naceur; Kamoun, Madiha; Dhouib, Adnene published an article.Category: alcohols-buliding-blocks The title of the article was Olive leaf extract as a green corrosion inhibitor of reinforced concrete contaminated with seawater. And the article contained the following:
In reinforced concrete, a high alk. medium, steel is commonly protected by formation a passive oxide film. Nevertheless, contamination with chlorides or carbonation causes the deterioration of protective film and the initiation of pitting corrosion. Hence, the need to enrich the fresh concrete solution with a good corrosion inhibitor. In accordance with green chem. to evade toxicity and minimize waste, we have chosen to replace the usual inhibitors with an alternative not only ecol. but also derived from biol. wastes, in a perspective of circular economy emphasizing that waste can offer important compounds at an affordable price and easily available. In this context this work seeks to valorize the dried olive leaves extract as an inhibitor in alk. chloride solution (pH 13). The targeted plant was grown in arid zones of Saudi Arabia and their leaves are usually disposed of as solid waste or animal feed. Four extraction solvents of different polarities were used; methanol, Et acetate, dichloromethane and hexane. The anticorrosive activity was performed using different electrochem. techniques; polarization curves, electrochem. impedance spectroscopy and Mott-Schottky analyses. The polarization studies proved that extract from olive leaves is a mixed type inhibitor in a solution of NaOH (0.1 M) + NaCl (0.5 M),with a predominant anodic effectiveness. The best inhibition of 91.9% is provided with methanol extract GC-MS anal. showed the presence of compounds containing the heteroatoms N and O with the 蟺 electrons which are responsible for the corrosion inhibition activity. The olive leaves have been found to be high in phenol and flavonoid content. Inhibition efficiency of the olive leaves extracts increases with the polarity of extraction solvents but also it appears that it depends on another factors. The experimental process involved the reaction of 2,4-Di-tert-butylphenol(cas: 96-76-4).Category: alcohols-buliding-blocks
The Article related to olea leaf green corrosion inhibitor reinforced concrete seawater contamination, biodegradation, carbonation, current density, flavonoids role: tem (technical or engineered material use), uses (uses), leaf, olea europaea, olive, oxidation, ph, phenols role: tem (technical or engineered material use), uses (uses), pitting corrosion, reinforced concrete, solubility and other aspects.Category: alcohols-buliding-blocks
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