Nonlinear group-contribution models of corrosion inhibition

Journal Article · Wed Mar 01 04:00:00 EST 1995 · Corrosion

DOI:https://doi.org/10.5006/1.3294362· OSTI ID:28023

Lukovits, I; Kalman, E; Palinkas, G ^[1]

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1. Hungarian Academy of Sciences, Budapest (Hungary). Central Research Inst. for Chemistry

The correlation between the molecular structure and the inhibitor efficiency (E{sub i}) of triamines was investigated. The group-contribution approach was adapted to account for Langmuir- and Frumkin-type inhibition. The group contributions (a{sub j}) were obtained using a nonlinear regression technique. It was assumed that corrosion inhibition was proportional with coverage, which in turn was accounted for by the langmuir and Frumkin models of adsorption. The multiple correlation coefficient obtained by the linear group-contribution model was improved markedly by using adsorption models. On the basis of these results, a more efficient inhibitor molecule was proposed.

• Sponsoring Organization: USDOE
• OSTI ID: 28023
• Journal Information: Corrosion, Journal Name: Corrosion Journal Issue: 3 Vol. 51; ISSN 0010-9312; ISSN CORRAK
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
40 CHEMISTRY
ADSORPTION ISOTHERMS
AMINES
CORRELATIONS
CORROSION INHIBITORS
MATHEMATICAL MODELS
MOLECULAR STRUCTURE
PERFORMANCE
REGRESSION ANALYSIS