Citation: Wen Jiaxin, Liu Yunxia, Liu Kejian, He Zhiqiang, Li Ying. Synthesis of 1, 2-Bis-(1-H-benzoimidazol-2-yl)ethanol and Its Corrosion Inhibition Performance on Q235 Steel[J]. Chemistry, ;2019, 82(6): 522-526. shu

Synthesis of 1, 2-Bis-(1-H-benzoimidazol-2-yl)ethanol and Its Corrosion Inhibition Performance on Q235 Steel

School of Chemical & Pharmaceutical Engineering, Chongqing Industry Polytechnic College, Chongqing 401120

Corresponding author: Wen Jiaxin, 18523976826@163.com
Received Date: 3 December 2018
Accepted Date: 20 February 2019

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1, 2-Bis-(1-H-benzoimidazol-2-yl) ethanol(HbbImet) was synthesized by DL-malic acid and o-phenylenediamine in ethylene glycol in different hydrochloride forms. The corrosion inhibition performance of HbbImet for Q235 steel was tested by mass loss method, polarization curve, electrochemical impedance spectroscopy (EIS) in 0.5 mol/L HCl solution, and the corrosion inhibition mechanism of HbbImet on Q235 steel was also discussed. The results showed that the inhibition efficiency increased with the increasing of HbbImet concentration at 25℃, and the inhibition efficiency can up to 92.23% when the concentration of HbbImet is 120mg/L. The addition of HbbImet significantly increases the apparent activation energy of the corrosion reaction and effectively inhibits the progress of the corrosion reaction. It is a mix-type corrosion inhibitor mainly controlling the hydrogen evolution process of the cathode.
- 1, 2-Bis-(1-H-benzoimidazol-2-yl)ethanol,
- Q235 steel,
- Corrosion inhibitor,
- Electrochemical impedance spectra
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