红茶提取液在盐酸中对碳钢的缓蚀作用

应用化学, 2014, 31(4): 469-473. doi: 10.3724/SP.J.1095.2014.30330

红茶提取液在盐酸中对碳钢的缓蚀作用

谢彦 ^1, , 阴军英 ^2, , 刘元伟 ^3, , 杨仲年 ^4, , 张凤玲 ^5,

1.滨州学院化学工程系滨州 256600;滨州学院化工技术研究中心滨州 256600

2.滨州学院化学工程系滨州 256600

3.滨州学院化学工程系滨州 256600

4.滨州学院化学工程系滨州 256600;滨州学院化工技术研究中心滨州 256600

5.滨州学院化学工程系滨州 256600

基金项目: 滨州学院科研基金项目(BZXYG1206) the Scientific Research Fund Project of Binzhou University(BZXYG1206) 国家自然科学基金资助项目(21276027) the Scientific Research Award Foundation for Shandong Provincial Outstanding Young and Middle-aged Scientists(2008BS04030) 山东省中青年优秀科学家奖励基金项目(2008BS04030) the National Natural Science Foundation of China(NSFC21276027)

关键词：红茶茶叶 , 盐酸 , 缓蚀剂 , 碳钢

Inhibition Effect of Extractives from Bohea Leaves on Carbon Steel in Hydrochloric Acid Solution

Keywords： bohea leaves , hydrochloric acid , corrosion inhibitor , carbon steel

采用动电位极化曲线和交流阻抗(EIS)研究了红茶提取液(BLE)在盐酸介质中对碳钢的缓蚀性能和缓蚀机理.研究结果表明,采用索氏提取法从红茶茶叶中提取的缓蚀剂,对碳钢在1.0 mol/L盐酸溶液中具有良好的缓蚀性能,随着提取物浓度的增加,缓蚀效率增大.红茶提取液中的有效缓蚀成分为抑制阴阳极反应的混合型缓蚀剂,在碳钢表面的吸附符合Langmuir等温式,属于单分子层吸附.

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