Examining the outstanding corrosion inhibition performance of nicotinic hydroxamic acid in acid pickling: a comprehensive study

IF 2.2 4区化学 Q2 Engineering

Chemical Papers Pub Date : 2025-01-14 DOI:10.1007/s11696-025-03886-z

Yeestdev Dewangan, Walid Daoudi, Dakeshwar Kumar Verma, Raghvendra Kumar Mishra, Rajesh Haldhar, Elyor Berdimurodov, Seong-Cheol Kim, Akhil Saxena, Lei Guo, Swati Jain, Vikas Kumar Jain, Sangeeta Gupta, Nizomiddin Aliev

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Abstract

This study introduces nicotinic hydroxamic acid (NHA) as a highly effective corrosion inhibitor in 1 M HCl, commonly used in acid pickling and cleaning processes for mild steel. NHA’s inhibitory properties were explored via electrochemical, surface morphology, and quantum chemical methods. The molecule’s carbonyl and hydroxyl groups form stable five-membered chelate complexes with metal cations. Density functional theory (DFT) with 6–31G (d, p) basis sets analyzed NHA inhibition theoretically. Corrosion prevention on steel in 1 M HCl was assessed using electrochemical methods like potentiodynamic polarization measurements (PDP) and electrochemical impedance spectroscopy (EIS). At 200 ppm, NHA exhibited a remarkable 92.75% inhibition efficiency. Its superior anti-corrosive properties stem from multiple double bonds and numerous oxygen atoms in the carbonyl and hydroxyl groups. This research establishes NHA as a potent corrosion inhibitor and elucidates its inhibitory mechanisms through combined experimental and theoretical analyses.

Graphical Abstract

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本研究介绍了烟酸羟肟酸（NHA），它是 1 M HCl（常用于低碳钢的酸洗和清洁工艺）中的一种高效缓蚀剂。研究通过电化学、表面形态学和量子化学方法探讨了 NHA 的缓蚀特性。该分子的羰基和羟基与金属阳离子形成稳定的五元螯合物。采用 6-31G (d, p) 基集的密度泛函理论（DFT）对 NHA 的抑制作用进行了理论分析。采用电位动力极化测量法（PDP）和电化学阻抗光谱法（EIS）等电化学方法评估了 NHA 在 1 M HCl 中对钢的防腐蚀作用。在 200 ppm 的浓度下，NHA 的抑制效率高达 92.75%。其卓越的抗腐蚀性能源于羰基和羟基中的多个双键和多个氧原子。这项研究将 NHA 确定为一种有效的缓蚀剂，并通过实验和理论分析阐明了其缓蚀机制。

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来源期刊

Chemical Papers Chemical Engineering-General Chemical Engineering

CiteScore

3.30

自引率

4.50%

发文量

590

期刊介绍： Chemical Papers is a peer-reviewed, international journal devoted to basic and applied chemical research. It has a broad scope covering the chemical sciences, but favors interdisciplinary research and studies that bring chemistry together with other disciplines.