Microwave-Assisted Preparation of 2-(Benzylthio)imidazole and 2-(Benzylthio)benzimidazole and its Comparative Corrosion Inhibiting Performance with 2-Mercaptoimidazole and 2-Mercaptobenzimidazole
Microwave-Assisted Preparation of 2-(Benzylthio)imidazole and 2-(Benzylthio)benzimidazole and its Comparative Corrosion Inhibiting Performance with 2-Mercaptoimidazole and 2-Mercaptobenzimidazole
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微波辅助制备2-(苄硫基)咪唑和2-(苄硫基)苯并咪唑及其与2-巯基咪唑和2-巯基苯并咪唑的缓蚀性能比较
DOI：
10.1149/1.3268419
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
M. Palomar
中科院分区：
文献类型：
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作者：
Deysi Y. Cruz;G. Negrón;M. Romero;H. Herrera;M. Palomar
研究了4种有机杂环化合物[2-巯基咪唑(2MI)、2-巯基苯并咪唑(2MBI)、2-(苯硫基)咪唑(2BZMI)和2-(苯硫基)苯并咪唑(2BZMBI)]在1M盐酸介质中的缓蚀性能，并用交流阻抗谱、交流阻抗谱进行了比较。后两种有机化合物是通过微波非常规合成得到的。随着缓蚀剂浓度从5-200ppm增加，Z也不断增加，从而表明缓蚀剂吸附在金属表面。此外，所有所研究的有机缓蚀剂在酸体系中加入30ppm后，缓蚀率IE约为9496%。此外，在该浓度下，缓蚀剂2BZMBI具有较好的保护效果。根据腐蚀混合电位理论，将四种有机缓蚀剂归类为混合缓蚀剂。
In this paper, the anticorrosive performance of four inhibitive organic heterocyclic compounds [2-Mercaptoimidazole (2MI), 2Mercaptobenzimidazole (2MBI), 2-(Benzylthio)imidazole (2BZMI) and 2-(Benzylthio)benzimidazole (2BZMBI)] were investigated using pipeline steel in hydrochloric acid media (1M HCl) and compared using electrochemical impedance spectroscopy, EIS. The last two organic compounds were obtained through non-conventional synthesis using microwaves. As the inhibitors concentration increased from 5-200 ppm, Z’re also increased continuously, thereby suggesting inhibitor adsorption onto the metal surface. Also, all the organic inhibitors studied showed acceptable corrosion inhibiting efficiency, IE, of about 9496% after adding 30 ppm to the acid system. Furthermore, at this concentration the better protection efficiency was attained for the inhibitor 2BZMBI. The four inhibitive organic compounds were classified as mixed inhibitors, in accordance with the corrosion mixed potential theory.