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中国腐蚀与防护学报  2011, Vol. 31 Issue (5): 336-340    
  研究报告 本期目录 | 过刊浏览 |
盐酸溶液中吡咯烷酮离子液体对碳钢的缓蚀性能
徐效陵1,黄宝华1,刘军1,刘春英2,潘湛昌1,张焜1
1. 广东工业大学轻工化工学院 广州 510006
2. 广东工业大学材料与能源学院 广州 510006
CORROSION INHIBITION OF PYRROLIDONIUM IONIC LIQUIDS FOR MILD STEEL IN HCl SOLUTION
XU Xiaoling1, HUANG Baohua1, LIU Jun1, LIU Chunying2, PAN Zhanchang1, ZHANG Kun1
1. Faculty of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006
2. Faculty of Materials and Energy, Guangdong University of Technology, Guangzhou 510006
全文: PDF(575 KB)  
摘要: 合成了两种吡咯烷酮酸性离子液体---1-辛基-2-吡咯烷酮的硫酸氢盐/四氟硼酸盐([Hnop]HSO4/BF4)。以失重法和电化学方法考察它们在1 mol/L HCl溶液中对低碳钢(Q235)的缓蚀性能,探讨其缓蚀机理和吸附行为。结果表明,两种离子液体均有缓蚀作用,属于混合型缓蚀剂。缓蚀率随浓度增加递增,随温度升高而下降。 [Hnop]HSO4的缓蚀性能优于[Hnop]BF4。30℃下, [Hnop]HSO4在1 mol/L HCl溶液中的添加浓度为0.8 mmol/L时,缓蚀率可达90%以上。其在碳钢表面上的吸附符合Langmuir吸附等温关系,是自发放热过程,同时兼有物理吸附和化学吸附两种吸附机制。
关键词 离子液体低碳钢盐酸吸附电化学技术    
Abstract:Two kinds of ionic liquids, hydrogen sulfate and tetrafluoroborate of 1-octyl-2-pyrrolidonium ([Hnop]HSO4/BF4), were prepared. Their inhibition and adsorption behavior on mild steel in 1 mol/L hydrochloric acid solutions were investigated by mass loss and electrochemical methods, respectively. The results indicate the ionic liquids act as the mixed type inhibitors. The inhibition efficiency of ionic liquids increases with the increasing inhibitor concentration, decreases with increased temperature and reaches more than 90% for [Hnop]HSO4 in 0.8 mmol/L at 303 K. The adsorption of [Hnop]HSO4 on the surface of mild steel obeys the Langmuir adsorption isotherm via physicochemical adsorption, which is a spontaneous exothermic process.
收稿日期: 2011-05-03     
ZTFLH: 

TG174

 
基金资助:

广东省自然科学基金项目(8151009001000024)资助

通讯作者: 黄宝华     E-mail: huangbaoh@163.com
Corresponding author: HUANG Baohua     E-mail: huangbaoh@163.com
作者简介: 徐效陵,男,1983年生,硕士,研究方向为金属材料腐蚀及防护

引用本文:

徐效陵,黄宝华,刘军,刘春英,潘湛昌,张焜. 盐酸溶液中吡咯烷酮离子液体对碳钢的缓蚀性能[J]. 中国腐蚀与防护学报, 2011, 31(5): 336-340.
XU Xiao-Ling, HUANG Bao-Hua, LIU Jun, LIU Chun-Yang, PAN Tan-Chang, ZHANG Kun. CORROSION INHIBITION OF PYRROLIDONIUM IONIC LIQUIDS FOR MILD STEEL IN HCl SOLUTION. J Chin Soc Corr Pro, 2011, 31(5): 336-340.

链接本文:

https://www.jcscp.org/CN/      或      https://www.jcscp.org/CN/Y2011/V31/I5/336

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