一种用于酸性环境中钢铁的新型绿色离子液体基缓蚀剂。
A New Green Ionic Liquid-Based Corrosion Inhibitor for Steel in Acidic Environments.
作者信息
Atta Ayman M, El-Mahdy Gamal A, Al-Lohedan Hamad A, Ezzat Abdel Rahman O
机构信息
Surfactants Research Chair, Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
Petroleum Application Department, Egyptian Petroleum Research Institute, Cairo 11727, Egypt.
出版信息
Molecules. 2015 Jun 17;20(6):11131-53. doi: 10.3390/molecules200611131.
This work examines the use of new hydrophobic ionic liquid derivatives, namely octadecylammonium tosylate (ODA-TS) and oleylammonium tosylate (OA-TS) for corrosion protection of steel in 1 M hydrochloric acid solution. Their chemical structures were determined from NMR analyses. The surface activity characteristics of the prepared ODA-TS and OA-TS were evaluated from conductance, surface tension and contact angle measurements. The data indicate the presence of a double bond in the chemical structure of OA-TS modified its surface activity parameters. Potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) measurements, scanning electron microscope (SEM), Energy dispersive X-rays (EDX) analysis and contact angle measurements were utilized to investigate the corrosion protection performance of ODA-TS and OA-TS on steel in acidic solution. The OA-TS and ODA-TS compounds showed good protection performance in acidic chloride solution due to formation of an inhibitive film on the steel surface.
本研究考察了新型疏水性离子液体衍生物，即十八烷基甲苯磺酸铵（ODA-TS）和油基甲苯磺酸铵（OA-TS）在1 M盐酸溶液中对钢的缓蚀作用。通过核磁共振分析确定了它们的化学结构。通过电导率、表面张力和接触角测量评估了制备的ODA-TS和OA-TS的表面活性特征。数据表明，OA-TS化学结构中双键的存在改变了其表面活性参数。利用动电位极化、电化学阻抗谱（EIS）测量、扫描电子显微镜（SEM）、能量色散X射线（EDX）分析和接触角测量来研究ODA-TS和OA-TS在酸性溶液中对钢的缓蚀性能。由于在钢表面形成了抑制膜，OA-TS和ODA-TS化合物在酸性氯化物溶液中表现出良好的保护性能。
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