New bipyrazole derivatives as corrosion inhibitors for steel in hydrochloric acid solutions
New bipyrazole derivatives as corrosion inhibitors for steel in hydrochloric acid solutions
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DOI：
10.1016/j.matchemphys.2005.03.059
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发表时间：
2005-10-15
影响因子：
4.6
通讯作者：
Elidrissi, A
中科院分区：
文献类型：
--
作者：
Elayyachy, M;Elkodadi, M;Elidrissi, A
采用失重法和电化学极化法研究了实验室合成的几种新型联吡唑衍生物在1 M HCl溶液中对碳钢缓蚀性能的影响。所有化合物的缓蚀效率均随浓度的增加而增加。极化曲线表明，双吡唑类化合物的缓蚀效率与电极电位有关，但不改变阴极析氢反应机理。结果表明，4-[双（3，5-二甲基-1H-吡唑-1-基）甲基]氨基苯甲酸乙酯（bipyrazol-4）是最好的缓蚀剂。温度效应表明，在308-353 K范围内，联吡唑-4的缓蚀效率随温度的升高而降低。(c)2005 Elsevier B. V.保留所有权利。
The influence of some new bipyrazole derivatives synthesized in the laboratory on the corrosion inhibition of mild steel in I M HCl solution is studied using weight loss and electrochemical polarization techniques. The inhibition efficiency of all compounds tested increases with increase of concentration. The polarization measurements indicate that the inhibition efficiency of bipyrazolic compounds depends upon electrode potential without changing the mechanism of the cathodic hydrogen evolution reaction. It is found that ethyl 4-[bis(3,5-dimethyl- 1H-pyrazol-1-yl)methyl)] amino benzoate (bipyrazol-4) is the best inhibitor. The effect of temperature indicates that the inhibition efficiency of bipyrazol-4 decreases with increasing temperature in the range 308-353 K. (c) 2005 Elsevier B.V. All rights reserved.