Adsorption properties and inhibition of mild steel corrosion in sulphuric acid solution by ketoconazole: Experimental and theoretical investigation

I. B. Obot; N. O. Obi-Egbedi

doi:10.1016/j.corsci.2009.09.002

Adsorption properties and inhibition of mild steel corrosion in sulphuric acid solution by ketoconazole: Experimental and theoretical investigation

I. B. Obot^*
, N. O. Obi-Egbedi

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

514 Scopus citations

Abstract

Ketoconazole (KCZ) has been evaluated as a corrosion inhibitor for mild steel in aerated 0.1 M H₂SO₄ by gravimetric method. The effect of KCZ on the corrosion rate was determined at various temperatures and concentrations. The inhibition efficiency increases with increase in inhibitor concentration but decrease with rise in temperature. Adsorption followed the Langmuir isotherm with negative values of Δ G_ads⁰, suggesting a stable and a spontaneous inhibition process. Quantum chemical approach was further used to calculate some electronic properties of the molecule in order to ascertain any correlation between the inhibitive effect and molecular structure of ketoconazole.

Original language	English
Pages (from-to)	198-204
Number of pages	7
Journal	Corrosion Science
Volume	52
Issue number	1
DOIs	https://doi.org/10.1016/j.corsci.2009.09.002
State	Published - Jan 2010
Externally published	Yes

Keywords

Corrosion inhibition
Ketoconazole
Mild steel
Quantum chemistry
Sulphuric acid

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
General Materials Science

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10.1016/j.corsci.2009.09.002

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title = "Adsorption properties and inhibition of mild steel corrosion in sulphuric acid solution by ketoconazole: Experimental and theoretical investigation",

abstract = "Ketoconazole (KCZ) has been evaluated as a corrosion inhibitor for mild steel in aerated 0.1 M H2SO4 by gravimetric method. The effect of KCZ on the corrosion rate was determined at various temperatures and concentrations. The inhibition efficiency increases with increase in inhibitor concentration but decrease with rise in temperature. Adsorption followed the Langmuir isotherm with negative values of Δ Gads0, suggesting a stable and a spontaneous inhibition process. Quantum chemical approach was further used to calculate some electronic properties of the molecule in order to ascertain any correlation between the inhibitive effect and molecular structure of ketoconazole.",

keywords = "Corrosion inhibition, Ketoconazole, Mild steel, Quantum chemistry, Sulphuric acid",

author = "Obot, \{I. B.\} and Obi-Egbedi, \{N. O.\}",

year = "2010",

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doi = "10.1016/j.corsci.2009.09.002",

language = "English",

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T1 - Adsorption properties and inhibition of mild steel corrosion in sulphuric acid solution by ketoconazole

T2 - Experimental and theoretical investigation

AU - Obot, I. B.

AU - Obi-Egbedi, N. O.

PY - 2010/1

Y1 - 2010/1

N2 - Ketoconazole (KCZ) has been evaluated as a corrosion inhibitor for mild steel in aerated 0.1 M H2SO4 by gravimetric method. The effect of KCZ on the corrosion rate was determined at various temperatures and concentrations. The inhibition efficiency increases with increase in inhibitor concentration but decrease with rise in temperature. Adsorption followed the Langmuir isotherm with negative values of Δ Gads0, suggesting a stable and a spontaneous inhibition process. Quantum chemical approach was further used to calculate some electronic properties of the molecule in order to ascertain any correlation between the inhibitive effect and molecular structure of ketoconazole.

AB - Ketoconazole (KCZ) has been evaluated as a corrosion inhibitor for mild steel in aerated 0.1 M H2SO4 by gravimetric method. The effect of KCZ on the corrosion rate was determined at various temperatures and concentrations. The inhibition efficiency increases with increase in inhibitor concentration but decrease with rise in temperature. Adsorption followed the Langmuir isotherm with negative values of Δ Gads0, suggesting a stable and a spontaneous inhibition process. Quantum chemical approach was further used to calculate some electronic properties of the molecule in order to ascertain any correlation between the inhibitive effect and molecular structure of ketoconazole.

KW - Corrosion inhibition

KW - Ketoconazole

KW - Mild steel

KW - Quantum chemistry

KW - Sulphuric acid

UR - https://www.scopus.com/pages/publications/74249110355

U2 - 10.1016/j.corsci.2009.09.002

DO - 10.1016/j.corsci.2009.09.002

M3 - Article

AN - SCOPUS:74249110355

SN - 0010-938X

VL - 52

SP - 198

EP - 204

JO - Corrosion Science

JF - Corrosion Science

IS - 1

ER -

Adsorption properties and inhibition of mild steel corrosion in sulphuric acid solution by ketoconazole: Experimental and theoretical investigation

Abstract

Keywords

ASJC Scopus subject areas

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