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首页> 外文期刊>RSC Advances >The novel iminium surfactant p-benzylidene benzyldodecyl iminium chloride as a corrosion inhibitor for plain carbon steel in 1 M HCl: electrochemical and DFT evaluation
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The novel iminium surfactant p-benzylidene benzyldodecyl iminium chloride as a corrosion inhibitor for plain carbon steel in 1 M HCl: electrochemical and DFT evaluation

机译：新型亚胺表面活性剂 p -亚苄基苄基十二烷基亚胺氯化物作为普通碳钢在1 M HCl中的腐蚀抑制剂：电化学和DFT评价

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摘要

The iminium surfactant p-benzylidene benzyldodecyl iminium chloride was synthesized, characterized and evaluated as a novel corrosion inhibitor for plain carbon steel in 1 M HCl solution at 30, 40, 50 and 60 °C using gravimetric analysis, spectrophotometric analysis of iron ions, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and density functional theory (DFT). The evaluated compound acted as an efficient corrosion inhibitor for plain carbon steel in 1 M HCl solution. The inhibition efficiency of the compound increased with an increase in concentration and solution temperature. The iminium surfactant gets adsorbed onto the plain carbon steel surface via mixed types of adsorption with predominantly chemisorption. The adsorption of the inhibitor was found to follow the Langmuir adsorption isotherm. The surface morphology of corroded plain carbon steel in uninhibited and inhibited acid, as investigated by scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDAX), clearly showed different results. The different quantum chemical parameters were used to correlate the inhibition efficiency of the inhibitor and its molecular structure.
机译：合成了亚胺表面活性剂 p -亚苄基苄基十二烷基亚甲基氯化铵，并用重量分析法对其进行了表征，并作为一种新型缓蚀剂用于普通碳钢在1 M HCl溶液中于30、40、50和60°C下进行了评估，铁离子的分光光度分析，电位动力学极化，电化学阻抗谱（EIS）和密度泛函理论（DFT）。被评估的化合物在1 M HCl溶液中可用作普通碳素钢的有效腐蚀抑制剂。该化合物的抑制效率随浓度和溶液温度的升高而增加。亚胺表面活性剂通过混合吸附和主要化学吸附被吸附在碳素钢表面。发现抑制剂的吸附遵循Langmuir吸附等温线。通过扫描电子显微镜（SEM）和能量色散X射线分析（EDAX）研究，在未抑制和抑制的酸中腐蚀的普通碳素钢的表面形态清楚地表明了不同的结果。使用不同的量子化学参数来关联抑制剂的抑制效率及其分子结构。

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