2-Amino-3,5-dicarbonitrile-6-thio-pyridines: New and Effective Corrosion Inhibitors for Mild Steel in 1 M HCl

被引：96

作者：

Sudheer ^{[1
]}

Quraishi, Mumtaz Ahmad ^{[1
]}

机构：

[1] Banaras Hindu Univ, Indian Inst Technol, Dept Chem, Varanasi 221005, Uttar Pradesh, India

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2014年 / 53卷 / 08期

关键词：

HYDROCHLORIC-ACID; SULFURIC-ACID; THEORETICAL INVESTIGATIONS; ELECTROCHEMICAL IMPEDANCE; ADSORPTION; IRON; DERIVATIVES; BEHAVIOR;

D O I：

10.1021/ie401633y

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The corrosion protection efficiency of three pyridines namely 2-amino-3,5-dicarbonitrile-4-(4-methoxyphenyl)-6-(phenylthio)pyridine (ADTP I), 2-amino-3,5-dicarbonitrile-4phenyl-6-(phenylthio) pyridine (ADTP H), and 2-amino-3,5dicarbonitrile-4-(4-nitrophenyl)-6-(phenylthio) pyridine (ADTP III) was investigated by electrochemical impedance spectroscopy, potentiodynamic polarization, and weight loss techniques. The results of potentiodynamic polarization studies show that the three compounds under investigation show mixed-type inhibition behavior. Among them, ADTP I shows the highest inhibition efficiency of 97.6% at 1.22 mmol L-1. The effect of temperature and related activation parameters were worked out. To inspect the surface morphology and composition of inhibitor film on the mild steel surface, scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX) technique were used.

引用

页码：2851 / 2859

页数：9

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