Schiff base compound as a corrosion inhibitor for mild steel in 1 M HCl

被引：8
|
作者：
Liu, Hong [1 ,2 ]
Zhu, Lin [1 ]
Zhao, Qilong [1 ]
机构：
[1] Southwest Petr Univ, Sch Chem & Chem Engn, Chengdu 610500, Peoples R China
[2] Southwest Petr Univ, State Key Lab Oil & Gas Reservoir Geol & Explorat, Chengdu 610500, Peoples R China
来源：
RESEARCH ON CHEMICAL INTERMEDIATES | 2015年 / 41卷 / 07期
关键词：
Mild steel; Schiff base; Electrochemical technique; Quantum chemical calculations; Acid corrosion; ADSORPTION BEHAVIOR; HYDROCHLORIC-ACID; CRYSTAL-STRUCTURE; CARBON-STEEL; ALUMINUM; DERIVATIVES; EXTRACT; SURFACE;
D O I：
10.1007/s11164-014-1579-8
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A new Schiff base compound named 4-(4'-benzoylhydrazine)-pyridinecarboxaldehyde hydrazone (BPBH) was synthesized and investigated as a corrosion inhibitor for mild steel in 1 M HCl using weight loss measurements, electrochemical techniques, and adsorption studies. The structure of BPBH was characterized by elemental analysis, infrared spectroscopy (IR), and H-1 nuclear magnetic resonance (NMR). The results clearly suggest that the compound acts as a mixed-type inhibitor of acid corrosion of mild steel. The adsorption of BPBH on the metal surface in 1 M HCl was found to agree with the Langmuir isotherm with a standard free energy of adsorption () of -31.60 kJ/mol. Scanning electron microscopy images indicate that BPBH exhibits good corrosion inhibition performance for mild steel in 1 M HCl. Quantum chemical calculations were also carried out to verify the inhibition efficiencies obtained from all the experiments.
引用
收藏
页码：4943 / 4960
页数：18
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