ABSTRACT In the present study, a novel task-specific benzimidazolium ionic liquid with silyl substitution was synthesised and successfully introduced as a corrosion inhibitor. The inhibitory effect of 2-benzyl-1-butyl-3-(3-(triethoxysilyl)propyl)-1H-benzo[d]imidazolium chloride (BTOSPB) in HCl solution on steel corrosion was evaluated by electrochemical measurement and surface studies including scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy (XPS). XPS and EDX results prove the presence of BTOSPB in the formed film on the metal surface, and its binding to the surface. Electrochemical impedance investigations indicated the prominent inhibitive performance of BTOSPB with an efficiency of 99.6%. According to the polarisation curves, BTOSPB is a mixed-type inhibitor with higher efficiency at higher temperatures and higher corrosive environment acidity. The results indicate that excellent inhibition efficiency was attained even in harsh conditions such as elevated temperature, long exposure time, and harder acidity of the solution.

中文翻译：

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基于任务特异性苯并咪唑鎓离子液体的新型绿色缓蚀剂在 HCl 中用于碳钢

摘要在本研究中，合成了一种具有甲硅烷基取代的新型任务特异性苯并咪唑离子液体，并成功引入作为缓蚀剂。通过电化学测量和表面研究（包括扫描）评估了 2-苄基-1-丁基-3-（3-（三乙氧基甲硅烷基）丙基）-1H-苯并[d]咪唑氯化物 (BTOSPB) 在 HCl 溶液中对钢腐蚀的抑制作用电子显微镜、能量色散 X 射线光谱和 X 射线光电子能谱 (XPS)。XPS 和 EDX 结果证明 BTOSPB 存在于金属表面形成的薄膜中，并与表面结合。电化学阻抗研究表明 BTOSPB 具有显着的抑制性能，效率为 99.6%。根据极化曲线，BTOSPB 是一种混合型缓蚀剂，在较高温度和较高腐蚀性环境酸度下具有更高的效率。结果表明，即使在高温、长时间暴露和溶液酸性较硬等苛刻条件下也能获得优异的抑制效率。