CORROSION INHIBITION OF STEEL IN MARINE ENVIRONMENT USING AMINO AMIDE DERIVED FROM PET PLASTIC WASTE

Pub Date : 2021-01-01 DOI:10.15251/jobm.2021.131.1
R. A. Abdel Hameed, M. AlElaimi, M. Qureshi, S. Al-Mhyawi, A. M. Al-bonayan, M. A. Abd El-Kader
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引用次数: 4

Abstract

Inhibition of steel from corrosion process in artificial marine environment of 2.0 M sodium chloride solution using amino amide compound derived from Poly (ethylene terephthalate) plastic waste, PET. In this respect solvent free efficient green recycling of PET waste via aminolysis with 1,3-diaminopropane in the presence of (sodium acetate/acetic acid) catalyst, the product is (N, N'-Bis-(3-amino-propyl)-terephthalamide) compound as nonionic surfactant was separated in good yield, characterized by FT-IR and 1HNMR, and evaluated as green corrosion inhibitor for steel alloys used in manufacturer of petroleum pipe lines using electrochemical techniques and atomic absorption spectroscopy(AAS). Effect of inhibitor concentration and temperature were studied. The corrosion inhibition efficiency found to increases with increasing of the inhibitor concentration and decreased by rising the temperature. Potentiodynamic polarization curves indicate that the used system act as mixed inhibitor. The data of AAS show that the ferric ion Fe+3 concentrations were decreased by increasing inhibitor concentration. The inhibition of amino amide compound derived from waste is due to adsorption and adhesion of its molecules on the steel surface which obeys Langmuir desorption isotherm model.
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从pet塑料废料中提取的氨基酰胺对海洋环境中钢铁的缓蚀作用
从聚对苯二甲酸乙酯塑料废料中提取的氨基酰胺化合物PET对人工海洋环境中2.0 M氯化钠溶液中钢的缓蚀作用在(乙酸钠/乙酸)催化剂存在下,利用1,3-二氨基丙烷氨解对PET废弃物进行无溶剂高效绿色回收,得到了(N, N’-双-(3-氨基丙基)-对苯二甲酸)化合物作为非离子表面活性剂,分离得到收率高的产物,并用FT-IR和1HNMR对其进行了表征,并利用电化学技术和原子吸收光谱(AAS)对其作为石油管道制造用钢合金的绿色缓蚀剂进行了评价。研究了缓蚀剂浓度和温度的影响。缓蚀剂的缓蚀效率随缓蚀剂浓度的增加而增加,随温度的升高而降低。动电位极化曲线表明,所使用的体系具有混合抑制剂的作用。原子吸收光谱结果表明,随着抑制剂浓度的增加,铁离子Fe+3浓度降低。来源于废弃物的氨基酰胺类化合物的抑制作用是由于其分子在钢表面的吸附和粘附,符合Langmuir解吸等温线模型。
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