Abstract

The method of electrochemical impedance spectroscopy was used to study the adsorption of an IFKhAN-92 inhibitor, 3-substituted 1,2,4-triazole, on low-carbon steel from 2.0 M H₂SO₄ (22°C). It was shown that the Temkin isotherm with a relatively high value of free energy of adsorption (−ΔG_ads) = 49 kJ/mol described its adsorption. It was suggested that the inhibitor adsorption has a chemisorption nature, which is testified both by the description of the kinetics of adsorption by the Roginsky–Zeldovich equation and a high protective aftereffect of the inhibitor adsorbed on the steel surface.

中文翻译：

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IFKhAN-92抑制剂在低碳钢上的硫酸吸附

摘要

电化学阻抗谱法用于研究IFKhAN-92抑制剂3-取代的1,2,4-三唑在2.0 MH ₂ SO ₄（22°C）下在低碳钢上的吸附。结果表明，所述的Temkin等温线与吸附的自由能的相对高的值（-Δ ģ_广告）= 49千焦/摩尔描述其吸附。有人认为抑制剂的吸附具有化学吸附性质，这既可以通过用Roginsky-Zeldovich方程描述吸附动力学来描述，又可以通过吸附在钢表面的抑制剂具有很高的保护后效来证明。