Ipomoea involcrata as an ecofriendly inhibitor for aluminium in alkaline medium

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

doi:10.4152/pea.200904517

Ipomoea involcrata as an ecofriendly inhibitor for aluminium in alkaline medium

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

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

62 Scopus citations

Abstract

The corrosion inhibition of aluminium by Ipomoea involcrata (IP) in 1 M NaOH was rapidly assessed using the gasometric technique at 30 and 60 ^oC. Results obtained showed that Ipomoea involcrata acts as an inhibitor for aluminium corrosion in 1 M NaOH. Inhibition efficiency increased with increase in concentration of IP up to 55.0% at 50 v/v% and decreased with increase in temperature. The adsorption of IP was in accord with Langmuir adsorption isotherm at the studied temperatures. A mechanism of physical adsorption is proposed from the calculated values of E, Q_ads and ΔG_ads.

Original language	English
Pages (from-to)	517-524
Number of pages	8
Journal	Portugaliae Electrochimica Acta
Volume	27
Issue number	4
DOIs	https://doi.org/10.4152/pea.200904517
State	Published - 2009
Externally published	Yes

Keywords

Adsorption isotherm
Aluminium
Corrosion inhibition
Ipomoea involcrata
Thermodynamics

ASJC Scopus subject areas

Electrochemistry

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10.4152/pea.200904517

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title = "Ipomoea involcrata as an ecofriendly inhibitor for aluminium in alkaline medium",

abstract = "The corrosion inhibition of aluminium by Ipomoea involcrata (IP) in 1 M NaOH was rapidly assessed using the gasometric technique at 30 and 60 oC. Results obtained showed that Ipomoea involcrata acts as an inhibitor for aluminium corrosion in 1 M NaOH. Inhibition efficiency increased with increase in concentration of IP up to 55.0\% at 50 v/v\% and decreased with increase in temperature. The adsorption of IP was in accord with Langmuir adsorption isotherm at the studied temperatures. A mechanism of physical adsorption is proposed from the calculated values of E, Qads and ΔGads.",

keywords = "Adsorption isotherm, Aluminium, Corrosion inhibition, Ipomoea involcrata, Thermodynamics",

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

year = "2009",

doi = "10.4152/pea.200904517",

language = "English",

volume = "27",

pages = "517--524",

journal = "Portugaliae Electrochimica Acta",

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publisher = "Sociedade Portuguesa de Electroquimica",

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TY - JOUR

T1 - Ipomoea involcrata as an ecofriendly inhibitor for aluminium in alkaline medium

AU - Obot, I. B.

AU - Obi-Egbedi, N. O.

PY - 2009

Y1 - 2009

N2 - The corrosion inhibition of aluminium by Ipomoea involcrata (IP) in 1 M NaOH was rapidly assessed using the gasometric technique at 30 and 60 oC. Results obtained showed that Ipomoea involcrata acts as an inhibitor for aluminium corrosion in 1 M NaOH. Inhibition efficiency increased with increase in concentration of IP up to 55.0% at 50 v/v% and decreased with increase in temperature. The adsorption of IP was in accord with Langmuir adsorption isotherm at the studied temperatures. A mechanism of physical adsorption is proposed from the calculated values of E, Qads and ΔGads.

AB - The corrosion inhibition of aluminium by Ipomoea involcrata (IP) in 1 M NaOH was rapidly assessed using the gasometric technique at 30 and 60 oC. Results obtained showed that Ipomoea involcrata acts as an inhibitor for aluminium corrosion in 1 M NaOH. Inhibition efficiency increased with increase in concentration of IP up to 55.0% at 50 v/v% and decreased with increase in temperature. The adsorption of IP was in accord with Langmuir adsorption isotherm at the studied temperatures. A mechanism of physical adsorption is proposed from the calculated values of E, Qads and ΔGads.

KW - Adsorption isotherm

KW - Aluminium

KW - Corrosion inhibition

KW - Ipomoea involcrata

KW - Thermodynamics

UR - https://www.scopus.com/pages/publications/70349414706

U2 - 10.4152/pea.200904517

DO - 10.4152/pea.200904517

M3 - Article

AN - SCOPUS:70349414706

SN - 0872-1904

VL - 27

SP - 517

EP - 524

JO - Portugaliae Electrochimica Acta

JF - Portugaliae Electrochimica Acta

IS - 4

ER -

Ipomoea involcrata as an ecofriendly inhibitor for aluminium in alkaline medium

Abstract

Keywords

ASJC Scopus subject areas

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