Corrosion inhibition of mild steel in acidic media using newly synthesized heterocyclic organic molecules

被引：76
作者：
Fekry, A. M. [1 ]
Ameer, M. A. [1 ]
机构：
[1] Cairo Univ, Fac Sci, Dept Chem, Giza 12613, Egypt
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2010年 / 35卷 / 14期
关键词：
Mild steel; EIS; SEM; Organic inhibitors; Hydrogen evolution; HYDROGEN EVOLUTION REACTION; BEHAVIOR; MECHANISM; COPPER; ADSORPTION; ELECTRODES; IMPEDANCE; ALLOY; NAOH;
D O I：
10.1016/j.ijhydene.2010.04.111
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Hydrogen evolution reaction (HER) (cathodic reaction) of mild steel immersed in H2SO4 acid was investigated. Electrochemical corrosion behavior and hydrogen evolution reaction of mild steel has been investigated using different electrochemical techniques. Steel was polarized vs. saturated calomel electrode (SCE) in naturally aerated 1.0 M H2SO4 aqueous solution containing four organic inhibitors (newly synthesized heterocyclic compounds) of different concentrations. The observed different influence of corrosion inhibitors on the hydrogen evolution reaction was associated with the different chemical composition and structure. Polarization results showed that corrosion current density, i(corr) and hydrogen evolution decreases with increasing concentration of inhibitors in 1.0 M H2SO4, indicating a decrease in the corrosion rate. Electrochemical impedance spectroscopy (EIS) measurements confirmed this behavior. An increase of temperature leads to increase in the corrosion or hydrogen evolution rate and a decrease of the total resistance value, R-T. The obtained results were confirmed by surface examination. Published by Elsevier Ltd on behalf of Professor T. Nejat Veziroglu.
引用
收藏
页码：7641 / 7651
页数：11
相关论文
共 27 条
[1]   Weight loss, polarization, electrochemical impedance spectroscopy, SEM and EDX studies of the corrosion inhibition of copper in aerated NaCl solutions [J].
Amin, MA .
JOURNAL OF APPLIED ELECTROCHEMISTRY, 2006, 36 (02) :215-226
[2]   Hydrogen evolution on conducting polymer electrodes in acidic media [J].
Aydin, Rezzan ;
Koeleli, Fatih .
PROGRESS IN ORGANIC COATINGS, 2006, 56 (01) :76-80
[3]  
AZIM AAA, 1974, CORROS SCI, V14, P21
[4]   The investigation of the kinetics and mechanism of hydrogen evolution reaction on tin [J].
Azizi, O. ;
Jafarian, M. ;
Gobal, F. ;
Heli, H. ;
Mahjani, M. G. .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2007, 32 (12) :1755-1761
[5]   Adsorption of benzotriazole on copper surfaces in a hydrochloric acid solution [J].
Bastidas, David M. .
SURFACE AND INTERFACE ANALYSIS, 2006, 38 (07) :1146-1152
[6]   Uncoupled non-linear equations method for determining kinetic parameters in case of hydrogen evolution reaction following Volmer-Heyrovsky-Tafel mechanism and Volmer-Heyrovsky mechanism [J].
Bhardwaj, Mukesh ;
Balasubramaniam, R. .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2008, 33 (09) :2178-2188
[7]   The phase-shift method for determining Langmuir adsorption isotherms of over-potentially deposited hydrogen for the cathodic H2 evolution reaction at poly-Re/aqueous electrolyte interfaces [J].
Chun, JH ;
Jeon, SK ;
Ra, KH ;
Chun, JY .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2005, 30 (05) :485-499
[8]  
Damaskin B.B., 1971, ADSORPTION ORGANIC C, P85
[9]   Hydrogen evolution reaction of low carbon steel electrode in hydrochloric acid as a source for hydrogen production [J].
El-Meligi, A. A. ;
Ismail, N. .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2009, 34 (01) :91-97
[10]   The inhibitory effect of bis-2,6-(3,5-dimethylpyrazolyl)pyridine on the corrosion behaviour of mild steel in HCl solution [J].
Ergun, Uemit ;
Yuezer, Devrim ;
Emreguel, Kaan C. .
MATERIALS CHEMISTRY AND PHYSICS, 2008, 109 (2-3) :492-499
123