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首页> 外文期刊>RSC Advances >Alginate surfactant derivatives as an ecofriendly corrosion inhibitor for carbon steel in acidic environments
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Alginate surfactant derivatives as an ecofriendly corrosion inhibitor for carbon steel in acidic environments

机译：藻酸盐表面活性剂衍生物作为酸性环境中碳钢的Ecofriendly腐蚀剂

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摘要

Biopolymer alginate surfactant derivatives were synthesized and their influences as a novel corrosion inhibitor on carbon steel in 1 M HCl were studied using gravimetric, electrochemical, EDX and SEM techniques. The compounds obtained were characterized using FTIR, H-1 NMR and UV-vis spectroscopy studies. The inhibition efficiency increased with the increase in concentration and reached a maximum of 96.27% for AS-Cu at 5 x 10(-3) M concentration. Potentiodynamic polarization results reveal that alginate derivatives could be classified as mixed-type corrosion inhibitors with predominant control of the cathodic reaction. The extent of inhibition exhibits a positive trend with an increase in temperature. The Langmuir isotherm provides the best description of the adsorption nature of the inhibitor. The results of EIS indicate that both the charge transfer resistance and inhibition efficiency tend to increase by increasing the inhibitor concentration. The thermodynamic parameter and activation parameters were calculated to investigate the mechanism of inhibition. Also, the relationship between the chemical structure and inhibition efficiency of the inhibitor was discussed.
机译：合成生物聚合物藻酸盐表面活性剂衍生物，使用重量测，电化学，EDX和SEM技术研究了作为1M HCl中碳钢的新腐蚀抑制剂的影响。使用FTIR，H-1 NMR和UV-Vis光谱研究表征所得化合物。抑制效率随浓度的增加而增加，浓度为5×10（3）米的AS-Cu的最大达到96.27％。电位动力学偏振效果显示，藻酸盐衍生物可以被分类为混合型腐蚀抑制剂，其具有占主导地位的阴极反应的主要控制。抑制程度表现出阳性趋势随着温度的增加。 Langmuir等温线提供了抑制剂吸附性质的最佳描述。 EIS的结果表明，通过增加抑制剂浓度倾向于增加电荷转移抗性和抑制效率。计算热力学参数和活化参数以研究抑制机制。而且，讨论了抑制剂的化学结构与抑制效率之间的关系。

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  • 来源
    《RSC Advances》 |2015年第126期|共16页
  • 作者

    Tawfik Salah M.;

  • 作者单位

    Egyptian Petr Res Inst Cairo Egypt;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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