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Citation: Guo Qiangqiang, Zhai Jiangli, Shu Shili. Study on Synthesis and Corrosion Inhibition Properties of a Methionine Derivative[J]. Chemistry, ;2019, 82(5): 476-479. shu

Study on Synthesis and Corrosion Inhibition Properties of a Methionine Derivative

1.
Department of Chemistry, Tangshan Normal College, Tangshan 063000
2.
Key Laboratory of Green Specialty Chemicals of Tangshan City, Tangshan 063000

Received Date: 3 December 2018
Accepted Date: 21 January 2019

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A novel methionine derivative pickling corrosion inhibitor was synthesized. Its structure was identified by IR and NMR. The corrosion inhibition performance of methionine derivative were studied by weight loss and electrochemical methods for A3 steel in 0.5mol·L^-1 sulfuric acid medium, and the inhibition mechanism was discussed by isothermal adsorption model. The results showed that the corrosion efficiency of methionine derivative was about 90%, which indicated it had excellent inhibitory effect for A3 steel in H₂SO₄ medium. Polarization curves indicated the inhibitor acts as mixed-type inhibitor. Impedance testing showed that the corrosion rate is decreased by increasing the charge transfer resistance of metal surface.
- Methionine,
- A3 steel,
- Corrosion inhibitor,
- Corrosion inhibition efficiency,
- Pickling
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