The aim of this research is evaluation of the performance of Pistacia khinjuk aerial part extract (PKAPE) on the corrosion of carbon steel in 2.0 M hydrochloric acid and 1.0 M sulfuric acid solutions and comparing the differences in the behavior of the extract in these two acidic environments. For this study, the classical method of weight loss and electrochemical methods [open-circuit potential (OCP) time, potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS)] were used. Based on weight loss experiments, the maximum inhibition efficiencies of 92.8% and 90.3% were obtained at 2.0 g/L of extract in 2.0 M HCl and 1.0 M H₂SO₄ solutions, respectively. Potentiodynamic polarization results revealed that PKAPE in both examined acidic solutions act as mixed-type inhibitor. Polarization measurements in the temperature range of 25–65 °C were carried out for different concentration to define the effect of temperature on the behavior of the extract. At all investigated temperatures, adsorption of PKAPE on the surface for both acidic media follows the Langmuir adsorption isotherm. Thermodynamic and activation parameters were calculated, and the results inferred that the adsorption of PKAPE on the surface for both acidic solutions is physisorption. Quantum chemical parameters were calculated using the density functional theory (DFT) method for main components of PKAPE to predict their adsorption on the surface.

中文翻译：

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黄连木茎部提取物对硫酸和盐酸溶液中碳钢腐蚀的抑制作用

这项研究的目的是评估黄连木菊茎部提取物（PKAPE）在2.0 M盐酸和1.0 M硫酸溶液中对碳钢腐蚀的性能，并比较这两种酸性提取物的行为差异。环境。对于这项研究，使用了经典的失重方法和电化学方法[开路电势（OCP）时间，电位动力学极化和电化学阻抗谱（EIS）]。根据减肥实验，在2.0 M HCl和1.0 MH ₂ SO ₄中提取物为2.0 g / L时，最大抑制效率为92.8％和90.3％。解决方案。电位动力学极化结果表明，两种检测的酸性溶液中的PKAPE均作为混合型抑制剂。在不同浓度下，在25–65°C的温度范围内进行极化测量，以定义温度对提取物行为的影响。在所有调查的温度下，两种酸性介质在表面上对PKAPE的吸附均遵循Langmuir吸附等温线。计算了热力学和活化参数，结果推断两种酸性溶液在表面上对PKAPE的吸附都是物理吸附。使用密度泛函理论（DFT）方法计算PKAPE主要成分的量子化学参数，以预测其在表面的吸附。