红茶提取液在盐酸中对碳钢的缓蚀作用

doi:10.3724/SP.J.1095.2014.30330

摘要/Abstract

摘要： 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。

关键词: 红茶茶叶, 盐酸, 缓蚀剂, 碳钢

Abstract: The corrosion inhibition effect of the Bohea leaves exctrative on carbon steel in 1.0 mol/L HCl solution was investigated by using potentiodynamic polarization and electrochemical impedance spectroscopy. The results indicate that the Bohea leaves extractive exhibits good corrosion inhibition effect on carbon steel. The inhibition efficiency increased with increasing concentration of Bohea leaves extractive. The Bohea leaves extractive is a mixed-type inhibitor. The adsorption of the effective corrosion inhibition component of Bohea leaves extractive on the carbon steel surface conforms with Langmuir adsorption isotherm equation, which belongs to monolayer adsorption.

Key words: bohea leaves, hydrochloric acid, corrosion inhibitor, carbon steel

中图分类号:

O6
TG174.4

谢彦, 阴军英, 刘元伟, 杨仲年, 张凤玲. 红茶提取液在盐酸中对碳钢的缓蚀作用[J]. 应用化学, DOI: 10.3724/SP.J.1095.2014.30330.

XIE Yan1,2, YIN Junying1, LIU Yuanwei1, YANG Zhongnian1,2*, ZHANG Fengling1. Inhibition Effect of Extractives from Bohea Leaves on Carbon Steel in Hydrochloric Acid Solution[J]. Chinese Journal of Applied Chemistry, DOI: 10.3724/SP.J.1095.2014.30330.

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