- Evaluation of corrosion inhibition performance of a novel ionic liquid based on synergism between cation and anion
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A novel ionic liquid, 1-butyl-1H-imidazol-1-ium 3-carboxy-2-((2-carboxylatoethyl)thio)propanoate ([Bhim]CETSA), was synthesized as an environmentally friendly and efficient corrosion inhibitor, and its corrosion inhibition performance on A3 steel in 1 M HCl solution was investigated by using the weight loss method, and the results indicated that the inhibition efficiency reached up to 90.11% when the concentration of [Bhim]CETSA was 10 mM at 298 K. There was a synergistic effect between anion and cation, and the anion played a major role in the corrosion inhibition of [Bhim]CETSA. The adsorption of ionic liquid on the A3 steel surface followed a Langmuir adsorption model and was proved by using infrared spectroscopy (IR), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM), and the relevant thermodynamic parameters were calculated and discussed. Moreover, the existence of the hydrophobic film on the A3 steel was proven by contact angle measurement, and the corrosion inhibition mechanism of [Bhim]CETSA was further studied by quantum chemical calculation.
- Chen, Maolong,Gao, Huajing,Jin, Zhaohui,Sun, Jian,Wang, Hong,Xie, Ning,Zhang, Jianlin
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- Synthesis and application of carboxyethylthiosuccinic acid by thiol-ene click reaction: as a novel rust remover with corrosion inhibition properties
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Abstract: Carboxyethylthiosuccinic acid (CETSA) was synthesized by thiol-ene click reaction and determined by various characterization methods, such as 1H NMR, IR and TG. A novel rust remover with corrosion inhibition was prepared by using CETSA as the main component. The results of rust removal were tested by the difference method and intuitive comparison method, and its rust removal mechanism was explored. The corrosion inhibition effect of the composite reagent for A3 steel in 1 M HCl solution was investigated by static weight loss test, the adsorption isotherm was calculated and fitted. Graphic abstract: CETSA was synthesized as a novel rust remover, which removed rust from the metal surface through penetration and chelation. It has excellent rust removal performance and protects the metal from corrosion by forming the adsorption membrane. [Figure not available: see fulltext.].
- Gao, Huajing,Jin, Zhaohui,Sun, Jian,Xie, Ning,Zhang, Jianlin,Zhang, Jianxin
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