Electrochemical Studies of 1-(2-(4-nitrophenyl)-2-oxoethyl)pyridazinium bromide, On Carbon Steel Corrosion in Hydrochloric Acid Medium

M. Messali; A. Bousskri; A. Anejjar; R. Salghi; B. Hammouti

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Electrochemical Studies of 1-(2-(4-nitrophenyl)-2-oxoethyl)pyridazinium bromide, On Carbon Steel Corrosion in Hydrochloric Acid Medium

机译：1-（2-（4-硝基苯基）-2-氧乙基）吡啶鎓溴化物在盐酸介质中对碳钢腐蚀的电化学研究

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The corrosion performance of Carbon steel in HCl solution with different concentration ofsynthesized Pyridazinium-based Ionic liquids namely: 1-(2-(4-nitrophenyl)-2-oxoethyl)pyridaziniumbromide NPEPB, was investigated by electrochemical measurements and weight loss. The obtainedresults reveal that NPEPB performs excellently as good corrosion inhibitor for Carbon steel in 1.0 MHCl. Polarization curves studies indicated that NPEPB behaves as mixed-type inhibitors. Thecalculated inhibition efficiencies from weight loss measurements, show the same evolution as thoseobtained from electrochemical studies. Also, the inhibition efficiency was found to increase with-3 increase of the inhibitor concentrations to reach 85 % at 10 M of NPEPB due to the adsorption of theinhibitors molecule on the electrod surface. Impedance measurements spectra exhibit one capacitiveand valid the inhibitive ability. confirming that this inhibitor inhibits the corrosion in 1 M HClthrough adsorption process following Langmuir adsorption isotherm. Some thermodynamicfunctions of the carbon steel dissolution process in acid medium were also determined and discussed.

机译：通过电化学测量和重量损失，研究了碳钢在不同浓度的吡啶并鎓基离子液体（1-（2-（4-硝基苯基）-2-氧代乙基）吡啶并溴化铵NPEPB）的HCl溶液中的腐蚀性能。所得结果表明，NPEPB在1.0 MHCl中作为碳钢的良好腐蚀抑制剂表现出色。极化曲线研究表明NPEPB表现为混合型抑制剂。从重量测量结果计算出的抑制效率显示出与电化学研究相同的演变。而且，发现由于抑制剂分子在电极表面上的吸附，当抑制剂浓度增加3时，在NPEPB 10 M处，抑制效率增加，达到85％。阻抗测量谱显示出一种电容性且有效的抑制能力。证实该抑制剂通过Langmuir吸附等温线的吸附过程抑制了1 M HCl中的腐蚀。还确定并讨论了碳钢在酸性介质中溶解过程的一些热力学函数。

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《International Journal of Electrochemical Science》 |2015年第6期|共20页
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M. Messali; A. Bousskri; A. Anejjar; R. Salghi; B. Hammouti;
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Electrochemical Studies of 1-(2-(4-nitrophenyl)-2-oxoethyl)pyridazinium bromide, On Carbon Steel Corrosion in Hydrochloric Acid Medium

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