Promising organoselenium corrosion inhibitors for C1018-steel in hydrochloric acid environments

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2024-09-14 DOI:10.1016/j.jtice.2024.105766

Saad Shaaban , Kamal Shalabi , Tarek A. Yousef , Mortaga Abou-Krisha , Abdulaziz A. Alanazi , Hanan A. Althikrallah , Mohamed Alaasar , Ahmed M. Abu-Dief , Ahmed S.M. Al-Janabi

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Abstract

Background

Novel organoselenium (OSe) corrosion inhibitors, namely 2-(((4-(benzylselanyl)phenyl)imino)methyl)-5-nitrophenol (BSeOH) and its Ni (II) chelate [Ni(BSeO)₂(H₂O)₂] were synthesized in 90 % and 88 % yields, respectively. Their chemical structures were characterized using different spectroscopic tools.

Methods

The corrosion inhibition efficiency was investigated toward C1018-steel in 1.0 M HCl solutions using potentiodynamic polarization, impedance spectroscopy, X-ray photoelectron spectroscopy, density functional theory, and Monte Carlo simulations. Several quantum chemical parameters were calculated using Density Functional Theory at the B3LYP/6–31G* computational model to elucidate the inhibitory activity of the compounds.

Significant findings

Electrochemical data showed that [Ni(BSeO)₂(H₂O)₂] has more protection efficiency (96.4 %) compared to its ligand BSeOH (93.4 %) at 15.0 × 10⁻⁶ M. In addition, the corrosion current density (i_cor) decreases (245.96 to 8.96 µAcm⁻²), the charge transfer resistance (R_ct) increases (95.15 to 1926.70 Ω cm²), and the admittance (Y₀) decreases (173.87 to 18.07 μΩ⁻¹ sⁿ cm⁻²) with the inhibitors’ dosage indication the formation of a protective adsorbed layer on the steel surface. Furthermore, the BSeOH and [Ni(BSeO)₂(H₂O)₂] inhibitors were spontaneously adsorbed on the steel surface, adhering to the Langmuir isotherm. Moreover, the electrochemical and theoretical results showed that these inhibitors were effectively adsorbed on the C1018-steel surface as a preventive layer. Collectively, the utilization of OSe agents as corrosion inhibitors is a novel approach that combines several advantageous characteristics, including improved efficiency, unique chemical properties, multiple inhibition mechanisms, and the potential for derivatization. Therefore, OSe inhibitors hold significant promise in the field of corrosion prevention and further studies are highly required to develop a more substantial strategy to fight corrosion by applying OSe compounds.

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盐酸环境中用于 C1018 钢的前景看好的有机硒缓蚀剂

背景分别以90%和88%的收率合成了新型有机硒（OSe）缓蚀剂，即2-(((4-(苄基硒基)苯基)亚氨基)甲基)-5-硝基苯酚（BSeOH）及其镍（II）螯合物[Ni(BSeO)2(H2O)2]。使用电位极化、阻抗光谱、X 射线光电子能谱、密度泛函理论和蒙特卡罗模拟研究了 C1018 钢在 1.0 M HCl 溶液中的缓蚀效率。重要发现电化学数据显示，在 15.0 × 10-6 M 时，[Ni(BSeO)2(H2O)2] 的保护效率（96.4%）高于其配体 BSeOH（93.4%）。此外，随着抑制剂用量的增加，腐蚀电流密度（icor）降低（245.96 至 8.96 µAcm-2），电荷转移电阻（Rct）增加（95.15 至 1926.70 Ω cm2），导纳（Y0）降低（173.87 至 18.07 μΩ-1 sn cm-2），这表明钢表面形成了保护吸附层。此外，BSeOH 和[Ni(BSeO)2(H2O)2] 抑制剂自发地吸附在钢表面，符合 Langmuir 等温线。此外，电化学和理论研究结果表明，这些抑制剂能有效地吸附在 C1018 钢表面，形成保护层。总之，利用 OSe 药剂作为缓蚀剂是一种新方法，它结合了多种优势特点，包括更高的效率、独特的化学性质、多种抑制机制和衍生化潜力。因此，OSe 抑制剂在防腐蚀领域大有可为，我们亟需开展进一步研究，以开发出应用 OSe 化合物抗腐蚀的更实质性策略。

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来源期刊

Journal of the Taiwan Institute of Chemical Engineers 工程技术-工程：化工

CiteScore

9.10

自引率

14.00%

发文量

362

审稿时长

35 days

期刊介绍： Journal of the Taiwan Institute of Chemical Engineers (formerly known as Journal of the Chinese Institute of Chemical Engineers) publishes original works, from fundamental principles to practical applications, in the broad field of chemical engineering with special focus on three aspects: Chemical and Biomolecular Science and Technology, Energy and Environmental Science and Technology, and Materials Science and Technology. Authors should choose for their manuscript an appropriate aspect section and a few related classifications when submitting to the journal online.