黄开宏,周坤,芮玉兰,曹毅.色氨酸复配缓蚀剂对碳钢在硫酸中的缓蚀性能[J].表面技术,2012,(5):25-29.
HUANG Kai-hong,ZHOU Kun,RUI Yu-lan,CAO Yi.The Corrosion Inhibition of Tryptophan and Its Compound for Carbon Steel in H2SO4 Solution[J].Surface Technology,2012,(5):25-29 |
| 色氨酸复配缓蚀剂对碳钢在硫酸中的缓蚀性能 |
| The Corrosion Inhibition of Tryptophan and Its Compound for Carbon Steel in H2SO4 Solution |
| 投稿时间：2012-06-18 修订日期：2012-10-20 |
| DOI： |
| 中文关键词: 色氨酸 协同效应 缓蚀剂 吸附等温模型 |
| 英文关键词:tryptophan synergistic effect corrosion inhibitor isothermal adsorption model |
| 基金项目:河北省教育厅项目(2009330) |
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| Author | Institution |
| HUANG Kai-hong | College of Chemical Engineering, Hebei United University, Tangshan 063009, China |
| ZHOU Kun | Department of Chemistry, Hebei Chemical & Pharmaceutical College, Shijiazhuang 050026, China |
| RUI Yu-lan | College of Chemical Engineering, Hebei United University, Tangshan 063009, China |
| CAO Yi | College of Chemical Engineering, Hebei United University, Tangshan 063009, China |
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| 中文摘要: |
| 利用失重法、电化学法研究色氨酸及其复配缓蚀剂对Q235碳钢片在0.5mol/L硫酸介质中的缓蚀性能,并用吸附等温模型和腐蚀动力学对缓蚀机理进行初步探讨。结果表明:单独使用色氨酸的缓蚀率不高,L-色氨酸与碘化钾有一定的协同效应,而与抗坏血酸的协同效应不显著,将三者以最佳用量复配后,缓蚀率可达92.43%;色氨酸与抗坏血酸均为混合型缓蚀剂,而碘化钾和复配缓蚀剂均为阳极型缓蚀剂;色氨酸通过化学吸附的方式吸附于碳钢表面,符合Langmuir吸附等温式。 |
| 英文摘要: |
| Th etryptophan and its compound were tested as corrosion inhibitors for carbon steel Q235 in an aqueous solution of 0.5 mol/L sulphuric acid by weight-loss and electrochemistry methods. The inhibitory mechanism was discussed by isothermal adsorption model and corrosion kinetics. The results show that single tryptophan has low corrosion inhibitor effect, while L-tryptophan and potassium iodide have certain synergistic effect, but synergistic effect with ascorbic acid is not significant. The three optimum amount of compound, the inhibition efficiency reaches 92.43%; The L-tryptophan and ascorbic acid are mixed type inhibitors, whereas the potassium iodide and complex inhibitors are the anodic type; Tryptophan is absvrbed on the surface of carbon steel by chemisorption adsorbed, in line with the Langmuir adsorption isotherm. |
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