Abstract

The obtained results allowed to reveal the inhibition properties of the essential oils of Foeniculum vulgare and to identify the major molecule—trans-anethole that enters into their composition. In this work, an isolated molecule of trans-anethole was tested in order to confirm its responsibility for a high inhibition efficiency and to study its adsorption mechanism. The inhibition efficiency of this natural molecule was evaluated by using such techniques as electrochemical polarization, impedance spectroscopy, and weight loss measurements. A protective layer formed on the mild steel surface was analyzed by scanning electron microscopy. This study showed a maximal inhibitory efficiency at 1.0 × 10^–3 M. The essential oils of Foeniculum vulgare were found to be a mixed type inhibitor that adsorbs on the metal surface by physisorption and is resistant to high temperatures. Finally, the results obtained allowed not only to determine the molecule responsible for a good anticorrosive activity of three oils extracted from three parts of Foeniculum vulgare, but also to obtain a new strong ecological inhibitor.

中文翻译：

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寻求发现一种在HCl介质中腐蚀低碳钢的生态抑制剂：反式-茴香脑-负责从粗叶茴香叶片，种子和鳞茎中提取的精油的抑制作用的分子

摘要

将得到的结果允许揭示的精油的抑制特性茴香，并确定主要分子-反式进入到他们的组合物-anethole。在这项工作中，对反式茴香脑的分离分子进行了测试，以确认其对高抑制效率的责任并研究其吸附机理。通过使用诸如电化学极化，阻抗谱和重量损失测量的技术来评估该天然分子的抑制效率。通过扫描电子显微镜分析在低碳钢表面上形成的保护层。这项研究显示了在1.0×10 ^–3 M时的最大抑制效率。发现茴香是一种混合型抑制剂，它通过物理吸附作用吸附在金属表面上，并具有耐高温性。最后，获得的结果不仅可以确定负责从三叶茴香提取的三种油中的三种油具有良好防腐活性的分子，而且还可以获得一种新型的强生态抑制剂。