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首页> 外文期刊>International Journal of Electrochemical Science >Synthesis, Characterization and Comparative Study of New Functionalized Imidazolium-Based Ionic Liquids Derivatives Towards Corrosion of C38 Steel in Molar Hydrochloric Acid
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Synthesis, Characterization and Comparative Study of New Functionalized Imidazolium-Based Ionic Liquids Derivatives Towards Corrosion of C38 Steel in Molar Hydrochloric Acid

机译：新型功能化咪唑基离子液体衍生物对C38钢在摩尔盐酸中腐蚀的合成，表征和比较研究

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摘要

This study examines the use of new imidazolium-based ionic liquids derivatives, namely 3-(3- phenylpropyl)-1-propyl-1H-imidazol-3-ium bromide (PPIB1) and 3-(4-phenoxybutyl)-1-propyl-1H- imidazol-3-ium bromide (PPIB4) for corrosion and dissolution protection of C38 steel in normalhydrochloric acid solution. The inhibiting efficiency of the different additives was evaluated by meansof weight loss and electrochemical techniques such as AC impedance measurements and polarizationcurves. The experimental results obtained reveal that PPIB4 was the most effective inhibitor. Thevariation in inhibitive efficiency mainly depends on the type and nature of the substituents present inthe inhibitor molecule. Polarization curves showed that the new imidazolium ionic liquids were mixed- type inhibitors in 1 M HCl. The inhibition efficiency increased with imidazolium ionic liquids-2 concentration and attained the maximum value of 94.2% in the case of PPIB4 at 10 M. The resultsobtained from weight loss and electrochemical studies were in reasonable agreement. The adsorptionof PPIB1 and PPIB4 on the steel surface obeyed to the Langmuir isotherm model. The thermodynamicdata of activation were determined and discussed.
机译：这项研究检查了新的咪唑基离子液体衍生物的使用，即3-（3-苯基丙基）-1-丙基-1H-咪唑-3-溴化铵（PPIB1）和3-（4-苯氧基丁基）-1-丙基-1H-咪唑-3-溴化铵（PPIB4）用于保护C38钢在正盐酸溶液中的腐蚀和溶解。通过失重和电化学技术（例如交流阻抗测量和极化曲线）评估了不同添加剂的抑制效率。获得的实验结果表明PPIB4是最有效的抑制剂。抑制效率的变化主要取决于抑制剂分子中存在的取代基的类型和性质。极化曲线表明，新的咪唑鎓离子液体是在1 M HCl中的混合型抑制剂。抑菌效率随咪唑鎓离子液体2浓度的增加而增加，在10 M的PPIB4情况下达到94.2％的最大值。从重量损失和电化学研究获得的结果是合理的。遵循Langmuir等温模型，PPIB1和PPIB4在钢表面的吸附。确定并讨论了活化的热力学数据。

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