1. Corrosion Inhibition Performance of Nitrogen-Containing Metal Organic Framework Compounds on Copper Flakes in Dilute HCl Medium.
- Author
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Wei, Wenchang, Liu, Zheng, Liang, Chuxin, Han, Guo-Cheng, Li, Yunkai, Li, Qingwei, Han, Jiaxing, and Zhang, Shufen
- Subjects
METAL-organic frameworks ,MILD steel ,ORGANOCOPPER compounds ,NITROGEN compounds ,COPPER surfaces ,LANGMUIR isotherms ,SCANNING electron microscopy techniques ,DICARBOXYLIC acids - Abstract
In this paper, a small molecular complex {[Cu(2,3-Hpyza)] · 2(H
2 O)} (compound 1) was synthesized by solvothermal method from pyrazine dicarboxylic acid and Cu(H3 COOH)2 · H2 O. A metal organic framework (MOF) compound {[Nd2 (2,3-Hpyza)3 ] · 4(H2 O)}n (compound 2) was synthesized by solvothermal method from pyrazine dicarboxylic acid and Nd(NO3 )3 · nH2 O. Weight loss method, electrochemical measurement technique, and scanning electron microscopy technique were used to study the corrosion inhibition behavior of compound 2 and compound 1 on copper in 1 mol L−1 HCl. At 25°C, compound 1 and 2 had the highest corrosion inhibition rate of copper was 91.4% and 87.5% with concentration of 0.5 mmol L−1 , respectively. The corrosion inhibition performance of compound 2 was better than compound 1 on copper corrosion. Both compound 1 and compound 2 were adsorbed on the surface of the copper, and accorded with the Langmuir isotherm adsorption equation. [ABSTRACT FROM AUTHOR]- Published
- 2020
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