Novel calixarene derivatives as inhibitors of mild C-38 steel corrosion in 1 M HCl

被引：15
|
作者：
Kaddouri, M. [2 ]
Cheriaa, N. [1 ,3 ]
Souane, R. [1 ,2 ]
Bouklah, M. [2 ]
Aouniti, A. [2 ]
Abidi, R. [3 ]
Hammouti, B. [2 ]
Vicens, J. [1 ]
机构：
[1] CNRS ULP, UMR 7178, IPCH, ECPM, F-67087 Strasbourg 2, France
[2] Fac Sci, Lab Chim Appl & Environm, Oujda, Morocco
[3] Fac Sci Bizerte, Zarouna Bizerte 7021, Tunisia
来源：
JOURNAL OF APPLIED ELECTROCHEMISTRY | 2008年 / 38卷 / 09期
关键词：
corrosion; steel; calixarene; inhibition; hydrochloric acid; chemisorption;
D O I：
10.1007/s10800-008-9546-y
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Calixarenes CA1-CA4 containing one to four 4-imidazolylethylamidocarbonyl groups were synthesized and tested as inhibitors for the corrosion of mild steel in 1 M HCl at 308 K. The study was made using Tafel polarisation and weight-loss methods. In contrast to CA1, calixarenes CA2-CA4 were good inhibitors, reaching inhibition efficiencies (E%) of 94 to 100% at 10(-4) M. The values of the inhibition efficiency calculated by the two techniques were in acceptable agreement. E% increased with the number of 4-imidazolylethylamidocarbonyl groups attached to the calixarene. Polarisation curves showed that CA2-CA4 act as mixed-type inhibitors. Their adsorption on the steel surface followed a Langmuir isotherm. Thermodynamic parameters of adsorption were also deduced.
引用
收藏
页码：1253 / 1258
页数：6
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