Open AccessImidazoline Gemini Surfactants as Corrosion Inhibitors for Carbon Steel X70 in NaCl Solution
Author(s) -
Weihua Zhuang,
Xiqiu Wang,
Weiping Zhu,
Yukun Zhang,
Dan Sun,
Rui Zhang,
Chuandong Wu
Publication year - 2021
Publication title -
acs omega
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.779
H-Index - 40
ISSN - 2470-1343
DOI - 10.1021/acsomega.0c06103
Subject(s) - imidazoline receptor , dielectric spectroscopy , corrosion , carbon steel , pulmonary surfactant , chemistry , polarization (electrochemistry) , electrochemistry , carbon fibers , inorganic chemistry , organic chemistry , materials science , electrode , composite number , composite material , biochemistry , medicine
The Gemini imidazoline surfactants were synthesized from a series of saturated fatty acids. Electrochemical impedance spectroscopy (EIS), polarization curve, and quantum chemistry methods were used to study the corrosion inhibition behavior of Gemini imidazoline surfactants for X70 carbon steel in NaCl solution. Results reveal that such kind of surfactants has an outstanding inhibition effect on carbon steel X70 in NaCl solution and that the restrained efficiency of Gemini imidazoline in an alkaline solution is better than that in a neutral solution. The shorter the carbon chain length, the higher the suppressive efficiency. The higher the concentration of Gemini imidazoline surfactant, the better the inhibition effect.