Experimental and Theoretical Investigation of Corrosion Inhibitive Potentials of (E)-4-hydroxy-3-[(2,4,6-tribromophenyl)diazenyl]benzaldehyde on Mild Steel in Acidic Media

IF 1.4 Q3 CHEMISTRY, MULTIDISCIPLINARY

Physical Chemistry Research Pub Date : 2020-09-01 DOI:10.22036/PCR.2020.217825.1725

J. Amoko, O. Akinyele, O. Oyeneyin, Dare Olayanju, C. Aboluwoye

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引用次数: 7

Abstract

Corrosion of metal surfaces amongst other problems is one major disaster militating against proper functioning of the oil and gas and other manufacturing industries. To therefore lessen the risk, organic corrosion inhibitors have been applied to lessen the rate of corrosion and its effects. However, materials with optimal properties, better than content that allow corrosion are used for this empirical research. (E)-4-hydroxy-3-(2,4,6-tribromophenyl)diazenyl)benzaldehyde was synthesized and elucidated via FTIR, UV/Vis and NMR (1H and 13C) spectroscopy. Weight loss and potentiodynamic polarization methods were understudy to determine the rate of corrosion (Cr) and percentage inhibition efficiency (%IE). The mechanism of adsorption agrees with the Langmuir adsorption isotherm. The surface morphology of the mild steel was determined using the SEM in the bi-condition of the presence and absence of inhibitor. Inhibition efficiency (IE) was varied with concentration and temperature. The results revealed that IE increased with high concentration of the inhibitor but reduced while the temperature was increased. The SEM revealed the formation of protective layer of the attachment of the inhibitor to the metal surface. The results from the experiments agreed well with those obtained from DFT methods. AD3 could therefore be used as an anticorrosive agent in the petroleum industry.

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(E)-4-羟基-3-[(2,4,6-三溴苯基)二氮基]苯甲醛在酸性介质中对低碳钢缓蚀电位的实验与理论研究

金属表面腐蚀等问题是阻碍石油、天然气和其他制造业正常运转的一大灾难。因此，为了降低风险，已经应用了有机缓蚀剂来降低腐蚀速率及其影响。然而，本实证研究使用了性能最佳、比允许腐蚀的含量更好的材料。（E）合成了4-羟基-3-（2,4,6-三溴苯基）二氮烯基）苯甲醛，并通过红外光谱、紫外/可见光谱和核磁共振（1H和13C）光谱对其进行了表征。用失重法和动电位极化法测定腐蚀速率（Cr）和缓蚀率（%IE）。吸附机理符合Langmuir吸附等温线。在抑制剂存在和不存在的双重条件下，使用SEM测定了软钢的表面形态。抑制效率随浓度和温度的变化而变化。结果表明，IE随着抑制剂浓度的增加而增加，但随着温度的升高而降低。SEM揭示了抑制剂在金属表面附着的保护层的形成。实验结果与DFT方法得到的结果一致。因此，AD3可以用作石油工业中的防腐剂。

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来源期刊

Physical Chemistry Research CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

2.70

自引率

8.30%

发文量

期刊介绍： The motivation for this new journal is the tremendous increasing of useful articles in the field of Physical Chemistry and the related subjects in recent years, and the need of communication between Physical Chemists, Physicists and Biophysicists. We attempt to establish this fruitful communication and quick publication. High quality original papers in English dealing with experimental, theoretical and applied research related to physics and chemistry are welcomed. This journal accepts your report for publication as a regular article, review, and Letter. Review articles discussing specific areas of physical chemistry of current chemical or physical importance are also published. Subjects of Interest: Thermodynamics, Statistical Mechanics, Statistical Thermodynamics, Molecular Spectroscopy, Quantum Chemistry, Computational Chemistry, Physical Chemistry of Life Sciences, Surface Chemistry, Catalysis, Physical Chemistry of Electrochemistry, Kinetics, Nanochemistry and Nanophysics, Liquid Crystals, Ionic Liquid, Photochemistry, Experimental article of Physical chemistry. Mathematical Chemistry.