Synergistic effect of halide ions on the corrosion inhibition of aluminum by some polymers

E. E. Ebenso; U. J. Ekpe; S. Umoren; Ekerete Jackson; O. K. Abiola; N. C. Oforka

Synergistic effect of halide ions on the corrosion inhibition of aluminum by some polymers

E. E. Ebenso^*, U. J. Ekpe, S. Umoren, Ekerete Jackson, O. K. Abiola, N. C. Oforka

^*Corresponding author for this work

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

2 Scopus citations

Abstract

The corrosion inhibition of aluminum in H₂SO₄ in the presence of polyvinyl alcohol (PVA) and polyethylene glycol (PEG) and the effect of halides (KCl, KBr, KI) were studied using the hydrogen evolution technique at 303 and 313 K. Inhibition efficiency increases with concentration of PVA and PEG, with PEG having a higher inhibition efficiency. The inhibition efficiency decreases with an increase in temperature from 303 and 313K in the absence and presence of the inhibitor and halides. PVA and PEG obey the Freundlish adsorption isotherm. A phenomenon of physical adsorption is proposed based on the values of E_a, ΔG_ads and Q_ads. The values of synergism parameter were greater than unity for both PVA and PEG, which indicate that the enhanced inhibition efficiency caused by the addition of halides is only due to synergism.

Original language	English
Pages (from-to)	437-444
Number of pages	8
Journal	Bulletin of Electrochemistry
Volume	21
Issue number	10
State	Published - Oct 2005
Externally published	Yes

Keywords

Aluminum
Corrosion inhibition
Freundlish adsorption isotherm
Gasometry
Polymers
Synergism

ASJC Scopus subject areas

Electrochemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Cite this

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title = "Synergistic effect of halide ions on the corrosion inhibition of aluminum by some polymers",

abstract = "The corrosion inhibition of aluminum in H2SO4 in the presence of polyvinyl alcohol (PVA) and polyethylene glycol (PEG) and the effect of halides (KCl, KBr, KI) were studied using the hydrogen evolution technique at 303 and 313 K. Inhibition efficiency increases with concentration of PVA and PEG, with PEG having a higher inhibition efficiency. The inhibition efficiency decreases with an increase in temperature from 303 and 313K in the absence and presence of the inhibitor and halides. PVA and PEG obey the Freundlish adsorption isotherm. A phenomenon of physical adsorption is proposed based on the values of Ea, ΔGads and Qads. The values of synergism parameter were greater than unity for both PVA and PEG, which indicate that the enhanced inhibition efficiency caused by the addition of halides is only due to synergism.",

keywords = "Aluminum, Corrosion inhibition, Freundlish adsorption isotherm, Gasometry, Polymers, Synergism",

author = "Ebenso, \{E. E.\} and Ekpe, \{U. J.\} and S. Umoren and Ekerete Jackson and Abiola, \{O. K.\} and Oforka, \{N. C.\}",

year = "2005",

month = oct,

language = "English",

volume = "21",

pages = "437--444",

journal = "Bulletin of Electrochemistry",

issn = "0256-1654",

publisher = "Scientific Publishers of India",

number = "10",

}

TY - JOUR

T1 - Synergistic effect of halide ions on the corrosion inhibition of aluminum by some polymers

AU - Ebenso, E. E.

AU - Ekpe, U. J.

AU - Umoren, S.

AU - Jackson, Ekerete

AU - Abiola, O. K.

AU - Oforka, N. C.

PY - 2005/10

Y1 - 2005/10

N2 - The corrosion inhibition of aluminum in H2SO4 in the presence of polyvinyl alcohol (PVA) and polyethylene glycol (PEG) and the effect of halides (KCl, KBr, KI) were studied using the hydrogen evolution technique at 303 and 313 K. Inhibition efficiency increases with concentration of PVA and PEG, with PEG having a higher inhibition efficiency. The inhibition efficiency decreases with an increase in temperature from 303 and 313K in the absence and presence of the inhibitor and halides. PVA and PEG obey the Freundlish adsorption isotherm. A phenomenon of physical adsorption is proposed based on the values of Ea, ΔGads and Qads. The values of synergism parameter were greater than unity for both PVA and PEG, which indicate that the enhanced inhibition efficiency caused by the addition of halides is only due to synergism.

AB - The corrosion inhibition of aluminum in H2SO4 in the presence of polyvinyl alcohol (PVA) and polyethylene glycol (PEG) and the effect of halides (KCl, KBr, KI) were studied using the hydrogen evolution technique at 303 and 313 K. Inhibition efficiency increases with concentration of PVA and PEG, with PEG having a higher inhibition efficiency. The inhibition efficiency decreases with an increase in temperature from 303 and 313K in the absence and presence of the inhibitor and halides. PVA and PEG obey the Freundlish adsorption isotherm. A phenomenon of physical adsorption is proposed based on the values of Ea, ΔGads and Qads. The values of synergism parameter were greater than unity for both PVA and PEG, which indicate that the enhanced inhibition efficiency caused by the addition of halides is only due to synergism.

KW - Aluminum

KW - Corrosion inhibition

KW - Freundlish adsorption isotherm

KW - Gasometry

KW - Polymers

KW - Synergism

UR - https://www.scopus.com/pages/publications/31544451804

M3 - Article

AN - SCOPUS:31544451804

SN - 0256-1654

VL - 21

SP - 437

EP - 444

JO - Bulletin of Electrochemistry

JF - Bulletin of Electrochemistry

IS - 10

ER -

Synergistic effect of halide ions on the corrosion inhibition of aluminum by some polymers

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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