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Electrochemical, morphological and theoretical studies of an oxadiazole derivative as an anti-corrosive agent for kerosene reservoirs in Iraqi refineries
Chemical Papers ( IF 2.1 ) Pub Date : 2019-12-09 , DOI: 10.1007/s11696-019-01022-2
Eva Adel Yaqo , Rana Afif Anaee , Majid Hameed Abdulmajeed , Ivan Hameed R. Tomi , Mustafa Mohammed Kadhim

An oxadiazole derivative 4-[3-(4-methylphenyl)-1,2,4-oxadiazol-5-yl]-phenol (MOP) has been investigated as a protector against corrosion of mild steel tanks in Iraqi kerosene reservoirs using the Tafel approach. The extrapolation study was carried out in four temperatures (303, 313, 323 and 333 K) and five concentrations (100, 200, 300, 400 and 500 ppm) of MOP derivative. The results of the polarization study showed that the MOP inhibitor is classified as a mixed type and the activity of corrosion inhibition was estimated depending on Tafel curve. The highest performance of the inhibition efficiency (IE% = 88.95) was observed in 500 ppm of the MOP inhibitor at 303 K, and the results showed that the increase of IE% was related to increase in the temperature and concentration of the inhibitor. The calculated thermodynamic parameters confirmed that the nature of adsorption is physisorption and the inhibitor obeys Langmuir isotherm. Different morphological methodologies have been used to confirm the protected layer formation on the steel surface. Also, Fourier transform infrared (FT-IR) spectrophotometer was used to detect the interference method between the inhibitor and surface. The computational study was applied to show the active locations of inhibitor and study their relationship with the surface by density functional theory (DFT). Also, the biological efficacy of this inhibitor has been shown to have a good inhibition zone against some types of corrosive bacteria.

中文翻译:

恶二唑衍生物作为伊拉克炼油厂煤油储层防腐剂的电化学,形态和理论研究

使用Tafel,研究了恶二唑衍生物4- [3-(4-甲基苯基)-1,2,4-恶二唑-5-基]-苯酚(MOP)作为伊拉克煤油储层中低碳钢罐的腐蚀防护剂方法。外推研究是在四个温度(303、313、323和333 K)和五个浓度(100、200、300、400和500 ppm)的MOP衍生物上进行的。极化研究的结果表明,将MOP抑制剂归类为混合型,并根据Tafel曲线估算了其缓蚀活性。在303 K下,在500 ppm的MOP抑制剂中观察到最高的抑制效率性能(IE%= 88.95),结果表明IE%的增加与抑制剂的温度和浓度的增加有关。计算得到的热力学参数证实了吸附的性质是物理吸附,并且抑制剂遵守了Langmuir等温线。已经使用不同的形态学方法来确认在钢表面上形成保护层。另外,使用傅立叶变换红外(FT-IR)分光光度计检测抑制剂与表面之间的干扰方法。应用计算研究来显示抑制剂的活性位置,并通过密度泛函理论(DFT)研究其与表面的关系。而且,已表明该抑制剂的生物学功效具有针对某些类型的腐蚀性细菌的良好抑制区。已经使用不同的形态学方法来确认在钢表面上形成保护层。另外,使用傅立叶变换红外(FT-IR)分光光度计检测抑制剂与表面之间的干扰方法。应用计算研究来显示抑制剂的活性位置,并通过密度泛函理论(DFT)研究其与表面的关系。而且,已表明该抑制剂的生物学功效具有针对某些类型的腐蚀性细菌的良好抑制区。已经使用不同的形态学方法来确认在钢表面上形成保护层。另外,使用傅立叶变换红外(FT-IR)分光光度计检测抑制剂与表面之间的干扰方法。应用计算研究来显示抑制剂的活性位置,并通过密度泛函理论(DFT)研究其与表面的关系。而且,已表明该抑制剂的生物学功效具有针对某些类型的腐蚀性细菌的良好抑制区。应用计算研究来显示抑制剂的活性位置,并通过密度泛函理论(DFT)研究其与表面的关系。而且,已表明该抑制剂的生物学功效具有针对某些类型的腐蚀性细菌的良好抑制区。应用计算研究来显示抑制剂的活性位置,并通过密度泛函理论(DFT)研究其与表面的关系。而且,已表明该抑制剂的生物学功效具有针对某些类型的腐蚀性细菌的良好抑制区。
更新日期:2019-12-09
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