Schiff’s base derived from the pharmaceutical drug Dapsone (DS) as a new and effective corrosion inhibitor for mild steel in hydrochloric acid

被引：0
|
作者：
Ambrish Singh
J. N. Avyaya
Eno. E. Ebenso
M. A. Quraishi
机构：
[1] Institute of Technology,Department of Applied Chemistry
[2] Banaras Hindu University,Department of Chemistry
[3] School of Mathematical and Physical Sciences,undefined
[4] North-West University,undefined
来源：
Research on Chemical Intermediates | 2013年 / 39卷
关键词：
Corrosion; Adsorption; Electrochemical techniques; Quantum calculations; Dapsone’s Schiff’s base with salicylaldehyde;
D O I：
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摘要：
The inhibition ability of Dapsone’s Schiff’s base with salicylaldehyde (1:2) for mild steel corrosion in 1 M HCl solution at 308 K was studied by means of potentiodynamic polarization, electrochemical impedance spectroscopy techniques, and gravimetric analysis. Results showed that Dapsone salicylaldehyde performed well as a good inhibitor for mild steel in 1 M HCl solution with maximum inhibition efficiency of 95 % at 500 ppm. The adsorption isotherm of the inhibitor followed the Langmuir adsorption. The value of free energy of adsorption showed that it is a spontaneous process and followed typical physical adsorption.
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页码：537 / 551
页数：14
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