Essential oil of Salvia aucheri mesatlantica as a green inhibitor for the corrosion of steel in 0.5 M H2SO4

被引：97

作者：

Znini, M. ^{[1
]}

Majidi, L. ^{[1
]}

Bouyanzer, A. ^{[3
]}

Paolini, J. ^{[2
]}

Desjobert, J-M ^{[2
]}

Costa, J. ^{[2
]}

Hammouti, B. ^{[3
]}

机构：

[1] Fac Sci & Tech, Lab Subst Nat & Synth & Dynam Mol, Errachidia, Morocco

[2] Univ Corse, CNRS, UMR 6134, Lab Chim Prod Nat,Fac Sci & Tech, Corsica, France

[3] Fac Sci, Lab Chim Appl & Environm, Oujda, Morocco

来源：

ARABIAN JOURNAL OF CHEMISTRY | 2012年 / 5卷 / 04期

关键词：

Corrosion; Inhibition; Steel; Essential oil; Salvia aucheri mesatlantica; Adsorption; AC-IMPEDANCE DATA; MILD-STEEL; ACIDIC MEDIA; ADSORPTION; TRIAZOLE; HCL;

D O I：

10.1016/j.arabjc.2010.09.017

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Essential oil of aerial parts of Salvia aucheri Boiss. var. mesatlantica was obtained by hydrodistillation and analyzed by GC and GC/MS. The oil was predominated by camphor (49.59%). The inhibitory effect of this essential oil was estimated on the corrosion of steel in 0.5 M H2SO4 using electrochemical polarization and weight loss measurements. The corrosion rate of steel is decreased in the presence of natural oil. The inhibition efficiency was found to increase with oil content to attain 86.12% at 2 g/L. Polarization curves revealed that the oil of S. aucheri mesatlantica acts as mixed type inhibitor with a strong predominance of anodic character. The temperature effect on the corrosion behavior of steel in 0.5 M H2SO4 without and with the inhibitor at 2 g/L was studied in the temperature range from 303 to 343 K, the associated activation energy have been determined. The adsorption of oil on the steel surface was found to obey Langmuir's adsorption isotherm. (C) 2010 King Saud University. Production and hosting by Elsevier B. V. All rights reserved.

引用

页码：467 / 474

页数：8

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