Electrochemical measurements and semi-empirical calculations for understanding adsorption of novel cationic Gemini surfactant on carbon steel in H 2 SO 4 solution

2018 ◽  
Vol 1156 ◽  
pp. 473-482 ◽  
Author(s):  
Ayman Esmat Elkholy ◽  
Fakiha El-Taib Heakal
Keyword(s):  
Carbon Steel ◽  
Gemini Surfactant ◽  
Electrochemical Measurements ◽  
Cationic Gemini Surfactant ◽  
Semi Empirical

Ionic Synergistic Inhibition between the Cationic Gemini Surfactant and Anionic Surfactant for Steel Corrosion in 1M Hydrochloric Acid

2011 ◽  
Vol 396-398 ◽  
pp. 2406-2410
Author(s):  
Zhi Chen ◽  
Huan Fang Gao ◽  
Yao Qiong Wang
Keyword(s):  
Carbon Steel ◽  
Anionic Surfactant ◽  
Acidic Medium ◽  
Gemini Surfactant ◽  
Sodium Dodecyl ◽  
Steel Corrosion ◽  
Adsorption Model ◽  
Cationic Gemini Surfactant ◽  
Carbon Steel Surface ◽  
Inhibitor System

The inhibitive synergistic effect between a cationic gemini surfactant, 1,2-ethane-bis(dimethyl dodecylammonium bromide) (designed as 12-2-12), and anionic surfactant, sodium dodecyl sulfonate (SDS) for the corrosion inhibition of A3 carbon steel in 1 mol L-1 HCl was investigated by weight loss. The inhibition system composed by 12-2-12 and SDS is efficient. The adsorption mechanism of the 12-2-12 and SDS on steel in acidic medium is discussed on the basis of experimental data and an adsorption model is proposed. Adsorption of inhibitor system on the A3 carbon steel surface in acidic medium obeys Langmuir’s adsorption isotherm.

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