Design and synthesis of a novel class of inhibitors for mild steel corrosion in acidic and carbon dioxide-saturated saline media
Design and synthesis of a novel class of inhibitors for mild steel corrosion in acidic and carbon dioxide-saturated saline media
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DOI：
10.1016/j.corsci.2014.06.026
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发表时间：
2014-10
影响因子：
8.3
通讯作者：
M. Mazumder;H. A. Al-Muallem;M. Faiz;Shaikh A. Ali
中科院分区：
文献类型：
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作者：
M. Mazumder;H. A. Al-Muallem;M. Faiz;Shaikh A. Ali
对-（9-（2-甲基异恶唑烷-5-基）壬氧基）苯甲醛I，采用环加成法制备，被加工成其肉桂醛衍生物II，其与炔丙基氯季铵化后得到具有适合于赋予低碳钢腐蚀抑制剂的有趣的结构特征的混合物III。通过重量分析法和电化学方法测定，新型化合物I-III在60 °C下在CO2-0.5 M NaCl（40 °C，1 atm; 120 °C，10 bar）、1、4、7.7 M HCl和0.5 M H2SO 4中显示出对低碳钢腐蚀的有效抑制。XPS研究表明，碳质表面和氮的存在表明形成了覆盖金属表面的膜，这赋予了腐蚀抑制作用。
p-(9-(2-Methylisoxazolidin-5-yl)nonyloxy)benzaldehydeI, prepared using a cycloaddition protocol, was elaborated into its cinnamaldehyde derivativeIIwhich upon quarternization with propargyl chloride affordedIIIbearing an interesting blend of structural traits suitable for imparting inhibition of mild steel corrosion. Novel compoundsI–IIIshowed efficient inhibition against mild steel corrosion in CO2–0.5 M NaCl (40 °C, 1 atm; 120 °C, 10 bar), 1, 4, 7.7 M HCl, and 0.5 M H2SO4at 60 °C as determined by gravimetry and electrochemical methods. The presence of carbonaceous surface and nitrogen, as revealed by XPS study, indicated the formation of a film covering the metal surface, which imparted corrosion inhibition.