Novel Synthesized Gemini Surfactant as Corrosion Inhibitor for Carbon Steel in HCl Solution

被引：27
作者：
Zhang, Ting [1 ]
Pan, Zhongwen [2 ]
Gao, Haixia [2 ]
机构：
[1] Anhui Sci & Technol Univ, Sch Chem & Mat Engn, Fengyang 233100, Anhui, Peoples R China
[2] Anhui Univ, Sch Chem & Chem Engn, Hefei 230039, Peoples R China
来源：
JOURNAL OF SURFACTANTS AND DETERGENTS | 2015年 / 18卷 / 06期
关键词：
Corrosion inhibition; Gemini surfactant with ester spacer; CMC; Adsorption mechanism; MILD-STEEL; ACID; ADSORPTION; CHLORIDE; BEHAVIOR; IRON; ION;
D O I：
10.1007/s11743-015-1740-4
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
A quaternary ammonium gemini surfactant containing an ester spacer, namely (diethylhexanedioate)diyl-alpha,omega-bis(dimethyl myristyl ammonium bromide) (14-DEHA-14) was synthesized using a two-step procedure with dimethyl hexanedioate, dimethylaminoethanol, and 1-bromotetradecane. The chemical structure of the compound was confirmed by infrared (IR) spectrum, H-1 nuclear magnetic resonance (NMR), and elemental analysis. The critical micelle concentration was determined by conductivity and tensiometry measurements, and its inhibition effect on corrosion of carbon steel in dilute (1.0 M) hydrochloric acid solution was investigated by weight loss measurements. The results show that the synthesized gemini surfactant acts as an excellent corrosion inhibitor in 1.0 M HCl solution. The adsorption of the inhibitor via chemical adsorption onto the carbon steel surface obeyed the Langmuir adsorption isotherm. A possible corrosion mechanism of the compound is discussed in relation to the calculated thermodynamic parameters and adsorption isotherm.
引用
收藏
页码：1003 / 1009
页数：7
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