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Corrosion inhibition efficiency of newly synthesized quaternary ammonium salt in 1M HCl
Indian Journal of Chemical Technology ( IF 0.5 ) Pub Date : 2022-04-25
K S Yoganand, M Meena, M J Umapathy

The newly synthesized quaternary ammonium salt, 1, 4-Bis (dimethyl decyl) ethylene diammonium bromide has been characterized by FT-IR, 1H NMR, 13C NMR. It has been examined for its corrosion efficiency by the weight loss method by immersing in a 1M HCl solution. The surface morphology is characterized using Scanning Electron Microscopy and it exhibited the variation between corroded surface and inhibited surface of carbon steel.Energy-Dispersive X-ray spectroscopy also shown the differences in composition of the corroded and surface coated with inhibitor. The efficiency of the inhibitor is investigated by varying the concentration of the inhibitor from 100 to 500 ppm and over a temperature range from 25 to 45C. Inhibitor efficiency is maximum in the concentration range of 500 ppm and found to be 77.75% at 45C. The plot of concentration against surface coverage revealed that, the present system follows Langmuir’s adsorption isotherm. Compared to acidic medium, inhibitor excelled its maximum efficiency in the neutral medium.

中文翻译:

新合成季铵盐在1M HCl中的缓蚀效果

采用FT-IR、1H NMR、13C NMR对新合成的季铵盐1,4-双(二甲基癸基)亚乙基溴化二铵进行了表征。已通过浸入 1M HCl 溶液中的失重法检查其腐蚀效率。用扫描电子显微镜对表面形貌进行了表征,它显示了碳钢腐蚀表面和抑制表面之间的变化。能量色散X射线光谱还显示了腐蚀表面和涂有抑制剂的表面成分的差异。通过在 25 至 45C 的温度范围内将抑制剂的浓度从 100 到 500 ppm 变化来研究抑制剂的效率。抑制剂效率在 500 ppm 浓度范围内最高,在 45C 时为 77.75%。浓度对表面覆盖率的图显示,本系统遵循朗缪尔吸附等温线。与酸性介质相比,抑制剂在中性介质中的效率最高。
更新日期:2022-04-25
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