Abstract

In this paper, a small molecular complex {[Cu(2,3-Hpyza)] · 2(H₂O)} (compound 1) was synthesized by solvothermal method from pyrazine dicarboxylic acid and Cu(H₃COOH)₂ · H₂O. A metal organic framework (MOF) compound {[Nd₂(2,3-Hpyza)₃] · 4(H₂O)}_n (compound 2) was synthesized by solvothermal method from pyrazine dicarboxylic acid and Nd(NO₃)₃ · nH₂O. 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.

中文翻译：

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稀盐酸介质中含氮金属有机骨架化合物对铜片的缓蚀性能

摘要

本文采用溶剂热法由吡嗪二羧酸和Cu（H ₃ COOH）₂ ·H合成了小分子络合物{[Cu（2,3-Hpyza）]·2（H ₂ O）}（化合物1）。₂ O.甲金属有机骨架（MOF）化合物{[钕₂（2,3- Hpyza）₃ ]·4（H ₂ O）} _ñ（化合物2）通过从吡嗪二羧酸和Nd溶剂热法（合成NO ₃）₃ ·nH ₂O.重量损失法，电化学测量技术和扫描电子显微镜技术用于研究化合物2和化合物1在1 mol L ^-1 HCl中对铜的腐蚀抑制行为。在25℃下，浓度为0.5mmol L ^-1的化合物1和2对铜的最高腐蚀抑制率分别为91.4％和87.5％。化合物2对铜的腐蚀抑制性能优于化合物1。化合物1和化合物2 被吸附在铜表面上，并符合Langmuir等温吸附方程。