HCl溶液中酸性离子液体对Q235钢的缓蚀作用  

Corrosion Inhibition of Q235 Steel by Acid Ionic Liquidin in HCl Solution

作　　者：李明丽[1] 曹淑云[1] 孟令波 桂建舟[1] 张磊[1] 刘丹[1] 

机构地区：[1]辽宁石油化工大学化学化工与环境学部,辽宁抚顺113001 [2]抚顺石化公司催化剂厂,辽宁抚顺113001

出　　处：《辽宁石油化工大学学报》2015年第2期17-21,31,共6页Journal of Liaoning Petrochemical University

基　　金：国家自然科学基金项目(21103077);新世纪优秀人才支持计划项目(NCET-11-1011);辽宁自然科学基金项目(201102120;201202123)

摘　　要：通过电化学测试研究了N-(4-磺酸基丁基)三乙基铵硫酸氢盐([(CH2)4SO3HTEA][HSO4])酸性离子液体在25℃、0.5mol/L的HCl溶液中对Q235钢的缓蚀性能。结果表明,该离子液体在一定的浓度范围内能够减缓HCl溶液对Q235钢的腐蚀,当离子液体的浓度为14mmol/L时,缓蚀效果最好。X射线光电子能谱(XPS)表征结果表明,在Q235钢表面离子液体能够形成吸附保护膜,覆盖反应活性中心,减缓HCl溶液对Q235钢的腐蚀。Corrosion inhibition effect of N-（4-sulfonic acid）butyl triethylammonium hydrogen sulfate（[（CH 2 ）4 SO 3 HTEA] [HSO 4 ]）acid ionic liquid（IL）towards Q235 steel corrosion in 0.5 mol/L HCl solution was investigated by electrochemical measurements in 25 ℃.The results show that the IL suppressed corrosion processes of Q235 steel in HCl solutionand the best performance of inhibition could be obtained with the concentration of inhibitor 14 mmol/L.The X-ray photoelectron spectroscopy（XPS）demonstrates that the protectiue film is formed by adsorption on the Q235steel surface,which can cover the reative center and inhibit the Q235 steel corrosion in HCl solution.

关 键 词：缓蚀剂 酸性离子液体 N-(4-磺酸基丁基)三乙基铵硫酸氢盐 Q235 钢 盐酸 

分 类 号：TE662[石油与天然气工程—油气加工工程]