Interaction of 12-aminododecanoic acid with a carbon steel surface: Towards the development of 'green' corrosion inhibitors
Interaction of 12-aminododecanoic acid with a carbon steel surface: Towards the development of 'green' corrosion inhibitors
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DOI：
10.1016/j.corsci.2010.02.019
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发表时间：
2010-06-01
影响因子：
8.3
通讯作者：
Omanovic, Sasha
中科院分区：
文献类型：
--
作者：
Ghareba, Saad;Omanovic, Sasha
研究了12-氨基十二烷酸（AA）对碳钢（CS）在CO2饱和盐酸介质中的缓蚀作用。结果发现，AA作为一种混合型抑制剂，产生的最大抑制效率为98.1 +/-0.1%。其缓蚀机理是通过形成自组装单分子层（SAM），其呈现由（-CH 2）（11）链施加的紧密疏水屏障。原位PM-IRRAS测量显示SAM是无定形的。SAM的形成过程被认为是自发的和可逆的。计算出AA在CS上吸附的标准吉布斯自由能为-28kJmol（-1）。(C)2010爱思唯尔有限公司版权所有。
The inhibiting effect of 12-aminododecanoic acid (AA) on corrosion of carbon steel (CS) in CO2-saturated hydrochloric acid was investigated. It was found that AA acts as a mixed-type inhibitor, yielding a maximum inhibition efficiency of 98.1 +/- 0.1%. The mechanism of its corrosion inhibition is by formation of a self-assembled monolayer (SAM), which presents a tight hydrophobic barrier imposed by the (-CH2)(11) chain. In-situ PM-IRRAS measurements revealed that the SAM is amorphous. The SAM formation process was found to be spontaneous and reversible. The corresponding standard Gibbs energy of AA adsorption on CS was calculated to be -28 kJ mol(-1). (C) 2010 Elsevier Ltd. All rights reserved.