Evaluating two new synthesized S-N Schiff bases on the corrosion of copper in 15% hydrochloric acid
Evaluating two new synthesized S-N Schiff bases on the corrosion of copper in 15% hydrochloric acid
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DOI：
10.1016/j.matchemphys.2007.06.068
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发表时间：
2008-01-15
影响因子：
4.6
通讯作者：
Ebrahimi, B.
中科院分区：
文献类型：
--
作者：
Behpour, M.;Ghoreishi, S. M.;Ebrahimi, B.
研究了两种新的席夫碱SB_（1）：2-（{-1-甲基-3-[（2-硫基苯基）亚氨基]丁叉基}氨基）-1-苯乙撑和SB_（2）：2-（{-1，2-二苯基-2-[（2-硫基苯基）亚氨基]乙叉基}氨基）-1-苯乙撑对铜在盐酸中的缓蚀作用。合成了席夫碱类化合物，并研究了它们对铜的缓蚀作用.电化学阻抗和塔菲尔极化测量的结果一致地确定这两种化合物作为良好的抑制剂。交流阻抗谱表明，铜在盐酸溶液中的腐蚀在一定程度上受到质量传递的影响，在某些情况下观察到瓦尔堡阻抗。极化曲线表明，这两个研究席夫碱作为混合型（阴极/阳极）抑制剂。SB 1和SB 2的缓蚀效率的差异与它们的化学结构有关。朗缪尔等温线被发现提供一个吸附描述的席夫碱。(C)2007 Elsevier B. V.保留所有权利。
The inhibiting action of two new Schiff bases namely SB1: 2-({-1-methyl-3-[(2-sulfanylphenyl)imino]butylidene}amino)-1-benzenethiol and SB2: 2-({-1,2-diphenyl-2-[(2-sulfanylphenyl)imino]ethylidene}amino)-1-benzenethiol on the corrosion of copper in hydrochloric acid has been studied. The Schiff bases were synthesized and studied as inhibitors for corrosion of copper. Results of electrochemical impedance and Tafel polarization measurements consistently identify both compounds as good inhibitors. Impedance spectroscopy revealed that the corrosion of copper in hydrochloric solution was influenced to some extent by mass transport since the Warburg impedance was observed in some cases. Polarization curves indicate that both studied Schiff bases act as mixed type (cathodic/anodic) inhibitors. Differences in inhibition efficiency between SB1 and SB2 are correlated with their chemical structures. Langmuir isotherm is found to provide an adsorption description of Schiff bases. (C) 2007 Elsevier B.V. All rights reserved.