Synthesis and corrosion inhibition study of benzodiazepines on mild steel in sulphuric acid medium

被引：15
|
作者：
Sasikala, T. [1 ]
Parameswari, K. [2 ]
Chitra, S. [2 ]
Kiruthika, A. [2 ]
机构：
[1] Hindusthan Coll Arts & Sci, Dept Biotechnol, Coimbatore 641028, Tamil Nadu, India
[2] PSGR Krishnammal Coll Women, Dept Chem, Coimbatore 641004, Tamil Nadu, India
来源：
MEASUREMENT | 2017年 / 101卷
关键词：
Mild steel; Benzodiazepine; Corrosion inhibitors; 1 M HCL; MOLECULES;
D O I：
10.1016/j.measurement.2017.01.028
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
2,4-diphenyl-2,3-dihydro-1H-1,5-benzodiazepine (DPBD) and 4-phenyl-2-(2-ethoxy-3-hydroxypheny1)2,3-dihydro-1H-1,5-benzodiazepine (EPBD) were synthesized by the condensation of ophenylenediamine and chalcone catalyzed by sulphated zirconia and characterized by FTIR spectra. Corrosion inhibition property of the benzodiazepines on mild steel in sulphuric acid medium was investigated by mass loss and electrochemical methods. The Compound EPBD showed better corrosion protection properties than DPBD both at room temperature and at higher temperatures. The results showed that the compounds act as good inhibitor and the efficiency increased with increase in their concentration. The adsorption of the inhibitors on the surface of mild steel was found to obey Langmuir adsorption isotherm. SEM study showed the formation of a protective adsorptive film of the inhibitor on mild steel surface. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：175 / 182
页数：8
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