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：27
|
作者：
Singh, Ambrish [1 ]
Avyaya, J. N. [1 ]
Ebenso, Eno E. [2 ]
Quraishi, M. A. [1 ]
机构：
[1] Banaras Hindu Univ, Inst Technol, Dept Appl Chem, Varanasi 221005, Uttar Pradesh, India
[2] North West Univ, Sch Math & Phys Sci, Dept Chem, ZA-2735 Mmabatho, South Africa
来源：
RESEARCH ON CHEMICAL INTERMEDIATES | 2013年 / 39卷 / 02期
关键词：
Corrosion; Adsorption; Electrochemical techniques; Quantum calculations; Dapsone's Schiff's base with salicylaldehyde; METAL; DERIVATIVES; COMPLEXES;
D O I：
10.1007/s11164-012-0577-y
中图分类号：
O6 [化学];
学科分类号：
0703 ;
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.
引用
收藏
页码：537 / 551
页数：15
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