Effect of octylphenol polyethylene oxide on the corrosion inhibition of steel in 0.5 M H2SO4

被引：78
作者：
Algaber, AS
El-Nemma, EM
Saleh, MM [1 ]
机构：
[1] Qatar Univ, Fac Sci, Dept Chem, Al Doha, Qatar
[2] Cairo Univ, Fac Sci, Dept Chem, Cairo, Egypt
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2004年 / 86卷 / 01期
关键词：
corrosion; iron; surfactant; inhibitor;
D O I：
10.1016/j.matchemphys.2004.01.040
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A non-ionic surfactant, octylphenol polyethylene oxide (OPPEO), was evaluated as an inhibitor for corrosion of low-carbon steel in 0.5 M H2SO4. Potentiodynamic and potentiostatic methods and scanning electron microscopy were used to study the inhibition effectiveness of the surfactant. The inhibition efficiency was found to increase with the inhibitor concentration and decrease with temperature. OPPEO showed higher constant protection efficiency near its critical micelle concentration. The activation energy of corrosion was found to be higher in presence than in absence of the inhibitor. The experimental data were fitted with the Flory-Huggins isotherm at a molecular ratio of 5:1. The Gibbs energy of adsorption decreases with the temperature. The inhibitor has relatively lower inhibition efficiencies at ambient and higher temperature. This was attributed to the molecular structure of the inhibitor. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：26 / 32
页数：7
相关论文
共 25 条
[1]  
[Anonymous], 1981, CORROSION INHIBITORS
[2]   THE EFFECT OF THIOUREA ON THE CORROSION KINETICS OF MILD-STEEL IN H2SO4 [J].
ATEYA, BG ;
ELANADOULI, BE ;
ELNIZAMY, FM .
CORROSION SCIENCE, 1984, 24 (06) :497-507
[3]   Copper corrosion inhibition by triphenylmethane derivatives in sulphuric acid media [J].
Bastidas, JM ;
Pinilla, P ;
Cano, E ;
Polo, JL ;
Miguel, S .
CORROSION SCIENCE, 2003, 45 (02) :427-449
[4]   THE MECHANISM OF CORROSION INHIBITION OF IRON IN ACID-SOLUTION BY ACETYLENIC ALCOHOLS [J].
BOCKRIS, JO ;
BO, Y .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1991, 138 (08) :2237-2252
[5]   Aluminium corrosion in hydrochloric acid solutions and the effect of some organic inhibitors [J].
Branzoi, V ;
Golgovici, F ;
Branzoi, F .
MATERIALS CHEMISTRY AND PHYSICS, 2003, 78 (01) :122-131
[6]   SOME SURFACTANTS IN THE SERIES OF 2-(ALKYLDIMETHYLAMMONIO) ALKANOL BROMIDES AS INHIBITORS OF THE CORROSION OF IRON IN ACID CHLORIDE SOLUTION [J].
ELACHOURI, M ;
HAJJI, MS ;
KERTIT, S ;
ESSASSI, EM ;
SALEM, M ;
COUDERT, R .
CORROSION SCIENCE, 1995, 37 (03) :381-389
[7]   Some nonionic surfactants as inhibitors of the corrosion of iron in acid chloride solutions [J].
Elachouri, M ;
Hajji, MS ;
Salem, M ;
Kertit, S ;
Aride, J ;
Coudert, R ;
Essassi, E .
CORROSION, 1996, 52 (02) :103-108
[8]   Synergistic effect of thiourea derivatives and non-ionic surfactants on the inhibition of corrosion of carbon steel in acid environments [J].
Gopi, D ;
Bhuvaneswaran, N ;
Rajeswarai, S ;
Ramadas, K .
ANTI-CORROSION METHODS AND MATERIALS, 2000, 47 (06) :332-338
[9]   THE INHIBITION ACTION OF HETEROCYCLIC NITROGEN ORGANIC-COMPOUNDS ON FE AND STEEL IN HC1 MEDIA [J].
GRANESE, SL ;
ROSALES, BM ;
OVIEDO, C ;
ZERBINO, JO .
CORROSION SCIENCE, 1992, 33 (09) :1439-1453
[10]   Effects of SDS and some alcohols on the inhibition efficiency of corrosion for nickel [J].
Guo, R ;
Liu, TQ ;
Wei, X .
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2002, 209 (01) :37-45
123