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首页> 外文期刊>RSC Advances >Corrosion inhibition of carboxylate inhibitors with different alkylene chain lengths on carbon steel in an alkaline solution
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Corrosion inhibition of carboxylate inhibitors with different alkylene chain lengths on carbon steel in an alkaline solution

机译：碳钢在碱性溶液中对不同亚烷基链长的羧酸盐缓蚀剂的缓蚀性能

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The inhibition effects of five organic carboxylate compounds with different alkylene chain lengths on Q235 steel in a simulated carbonation concrete pore solution (pH 11.5) were studied using quantum chemical calculations, electrochemical measurement and surface analysis. The results show that the adsorption capacity of the inhibitors increases with increasing distance between the CC bond and COO– group. As the alkylene chain length increases, the absolute surface charge value increases and the inhibition effectiveness tends to increase. C11 shows the best inhibition. The carboxylate inhibitors adsorb on a steel surface by forming Fe–OOC–C _( x ) compounds and the CC bonds could enhance the adsorption process.
机译：使用量子化学计算，电化学测量和表面分析方法研究了五种不同亚烷基链长的有机羧酸盐化合物对Q235钢在模拟碳化混凝土孔隙溶液（pH 11.5）中的抑制作用。结果表明，抑制剂的吸附能力随CC键和COO–基团之间距离的增加而增加。随着亚烷基链长度的增加，绝对表面电荷值增加并且抑制效果趋于增加。 C11显示出最佳的抑制作用。羧酸盐抑制剂通过形成Fe–OOC–C _（x）化合物而吸附在钢表面，并且CC键可以增强吸附过程。

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