M. R. Bairamov, M. A. Dzhavadov, M. A. Agaeva, G. M. Mekhtieva, G. M. Gasanova, Z. M. Dzhavadova
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引用次数: 0
摘要
本文介绍了 2-allyl-4-isodecylphenol 的季态含氮衍生物,即季态铵盐 2-allyl-4-isodecyl-6-diethylaminomethylphenol (I) 和 2-allyl-4-isodecyl-6-piperidinomethylphenol (II) 在 St.3 钢板上的防腐重量测定研究结果。在由 3% 的氯化钠水溶液和碳氢化合物(煤油)以 9 : 1 的比例(体积/容积)组成的体系中,对 St.3 钢板上的苯酚和 2-烯丙基-4-异癸基-6-哌啶基甲酚(II)进行了测试。研究了温度和化合物浓度对腐蚀速率、金属表面覆盖率和保护效果的影响(试验时间为 5 小时)。结果发现,化合物 I 和 II 具有很高的抑制性能。测定了吸附热力学参数(ΔG、ΔH、ΔS),在此基础上提出了钢 St.3 表面保护的化学吸附阻滞机理。化学吸附过程由 Langmuir 等温线描述。
Antiсorrosion Properties of Quaternary Nitrogen-Containing Derivatives of 2-Allyl-4-isodecylphenol in Aqueous-Salt and Hydrocarbon Systems
The paper presents the results of anticorrosion gravimetric studies of the quaternary nitrogen-containing derivatives of 2-allyl-4-isodecylphenol, namely, the quaternary ammonium salts 2-allyl-4-isodecyl-6-diethylaminomethylphenol (I) and 2-allyl-4-isodecyl-6-piperidinomethylphenol (II) on steel St.3 plates in a system consisting of a 3% aqueous NaCl solution and hydrocarbons (kerosene) at a ratio of 9 : 1 (vol/vol). The influence of the temperature and concentration of the compounds on the corrosion rate, metal surface coverage, and protective effect was studied (test time 5 h). Compounds I and II were found to have high inhibitory properties. The thermodynamic parameters of adsorption (ΔG, ΔH, ΔS) were determined, based on which the chemisorption blocking mechanism of steel St.3 surface protection was proposed. The chemisorption process is described by the Langmuir isotherm.
期刊介绍:
Russian Journal of Physical Chemistry A. Focus on Chemistry (Zhurnal Fizicheskoi Khimii), founded in 1930, offers a comprehensive review of theoretical and experimental research from the Russian Academy of Sciences, leading research and academic centers from Russia and from all over the world.
Articles are devoted to chemical thermodynamics and thermochemistry, biophysical chemistry, photochemistry and magnetochemistry, materials structure, quantum chemistry, physical chemistry of nanomaterials and solutions, surface phenomena and adsorption, and methods and techniques of physicochemical studies.