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

页码：537 / 551

页数：15

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