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Chemical, electrochemical, and surface studies of Rosa damascene extract as a green corrosion inhibitor for carbon steel in sulfuric acid environment
Journal of the Chinese Chemical Society ( IF 1.8 ) Pub Date : 2024-01-24 , DOI: 10.1002/jccs.202300334
Hanaa M. Elabbasy 1 , Mohamed E. Elnagar 2 , Abd El‐Aziz S. Fouda 3
Affiliation  

To develop an environmentally acceptable corrosion inhibitor Rosa damascene extract (RD) served as the main ingredient in H2SO4 pickling processes. X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared spectroscopy (FT-IR), technique of electrochemical impedance spectroscopy (EIS), polarization (PP) curves, and tests of weight loss (WL) have all been utilized to examine the inhibitory behavior of Rosa damascene on C-steel corrosion in 1 M H2SO4 environment. The results show that the extract effectively inhibited the Zn′ corrosion in 1 M H2SO4. The inhibition was more effective at higher concentrations and temperatures. The inhibitory efficiency increased to 93.5% at a higher applied temperature (45°C) and higher Rosa damascene concentration (300 ppm). However, utilizing the weight loss method at potassium iodide addition, the inhibitory effectiveness of 300 ppm of Rosa damascene was synergistically increased from 75.0% to 96.1% at 25°C. Temkin isotherm was congruent with the adsorption process that produced the inhibitory impact on the C-steel. The chemical adhesion of the Rosa damascene extract to the surface of the C-steel was determined by the free energy of adsorption (ΔGoads = 40.5 kJ/mol.). In H2SO4 solution, corrosion of C-steel may be prevented by the powerful inhibitor Rosa damascene extract.

中文翻译:

大马士革玫瑰提取物作为硫酸环境中碳钢绿色缓蚀剂的化学、电化学和表面研究

开发环境可接受的缓蚀剂,将大马士革蔷薇提取物 (RD) 作为 H 2 SO 4酸洗工艺的主要成分。 X射线光电子能谱(XPS)、傅里叶变换红外光谱(FT-IR)、电化学阻抗谱(EIS)技术、偏振(PP)曲线和失重测试(WL)都被用来检查玫瑰大马士革在1 MH 2 SO 4环境中对碳钢腐蚀的抑制行为。结果表明,提取物有效抑制1 MH 2 SO 4中Zn'的腐蚀。在较高浓度和温度下抑制作用更有效。在较高的应用温度 (45°C) 和较高的大马士革玫瑰浓度 (300 ppm)下,抑制效率增加至 93.5% 。然而,利用添加碘化钾的失重方法,300 ppm大马士革玫瑰的抑制效果在 25°C 下协同增加,从 75.0% 增加到 96.1%。 Temkin 等温线与对碳钢产生抑制作用的吸附过程一致。大马士革玫瑰提取物对碳钢表面的化学粘附力由吸附自由能决定(ΔG o ads  = 40.5 kJ/mol.)。在H 2 SO 4溶液中,强效抑制剂大马士革玫瑰提取物可以防止碳钢的腐蚀。
更新日期:2024-01-24
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