Thermodynamic properties of 5-(4'-isopropylbenzylidene)-2,4-dioxotetrahydro-1,3-thiazole as a Corrosion Inhibitor for copper in acid solution

Gyöngyi Vastag, Jelena Nakomčić, A. Shaban

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

5-(4'-isopropylbenzylidene)-2,4-dioxotetrahydro-1,3-thiazole, (IPBDT) was tested as a potential copper corrosion inhibitor in 0.1 mol dm-3 Na2SO4 solution at pH=3. Using dc polarization measurements and electrochemical impedance spectroscopy (EIS) the influence of the inhibitor concentration and temperature on the inhibitor efficiency was investigated. The obtained results suggested that IPBDT is a very good copper corrosion inhibitor in given condition, whose efficiency increases with the increase of the thiazole concentration as well as with the increase of temperature. EIS results showed that the inhibition effect of the thiazole manifests through an increase of the total resistance and a decrease of the double layer capacitance compared to the blank solution. The kinetic and thermodynamic parameters obtained by the polarization measurements, indicated that the copper corrosion in acidic sulfate solution occurs as an endothermic reaction and that the inhibitor molecules protect the copper during their chemisorption on the metal surface following the Langmuir's adsorption isotherm.

Original languageEnglish
Pages (from-to)8229-8244
Number of pages16
JournalInternational Journal of Electrochemical Science
Volume11
Issue number10
DOIs
Publication statusPublished - 2016

Fingerprint

Copper corrosion
Thiazoles
Corrosion inhibitors
Copper
Thermodynamic properties
Electrochemical impedance spectroscopy
Acids
Polarization
Chemisorption
Adsorption isotherms
Capacitance
Thermodynamics
Sulfates
Temperature
Molecules
Kinetics
Metals

Keywords

  • Copper corrosion
  • Electrochemical impedance spectroscopy (EIS)
  • Polarization measurements
  • Thiazole derivative

ASJC Scopus subject areas

  • Electrochemistry

Cite this

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title = "Thermodynamic properties of 5-(4'-isopropylbenzylidene)-2,4-dioxotetrahydro-1,3-thiazole as a Corrosion Inhibitor for copper in acid solution",
abstract = "5-(4'-isopropylbenzylidene)-2,4-dioxotetrahydro-1,3-thiazole, (IPBDT) was tested as a potential copper corrosion inhibitor in 0.1 mol dm-3 Na2SO4 solution at pH=3. Using dc polarization measurements and electrochemical impedance spectroscopy (EIS) the influence of the inhibitor concentration and temperature on the inhibitor efficiency was investigated. The obtained results suggested that IPBDT is a very good copper corrosion inhibitor in given condition, whose efficiency increases with the increase of the thiazole concentration as well as with the increase of temperature. EIS results showed that the inhibition effect of the thiazole manifests through an increase of the total resistance and a decrease of the double layer capacitance compared to the blank solution. The kinetic and thermodynamic parameters obtained by the polarization measurements, indicated that the copper corrosion in acidic sulfate solution occurs as an endothermic reaction and that the inhibitor molecules protect the copper during their chemisorption on the metal surface following the Langmuir's adsorption isotherm.",
keywords = "Copper corrosion, Electrochemical impedance spectroscopy (EIS), Polarization measurements, Thiazole derivative",
author = "Gy{\"o}ngyi Vastag and Jelena Nakomčić and A. Shaban",
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T1 - Thermodynamic properties of 5-(4'-isopropylbenzylidene)-2,4-dioxotetrahydro-1,3-thiazole as a Corrosion Inhibitor for copper in acid solution

AU - Vastag, Gyöngyi

AU - Nakomčić, Jelena

AU - Shaban, A.

PY - 2016

Y1 - 2016

N2 - 5-(4'-isopropylbenzylidene)-2,4-dioxotetrahydro-1,3-thiazole, (IPBDT) was tested as a potential copper corrosion inhibitor in 0.1 mol dm-3 Na2SO4 solution at pH=3. Using dc polarization measurements and electrochemical impedance spectroscopy (EIS) the influence of the inhibitor concentration and temperature on the inhibitor efficiency was investigated. The obtained results suggested that IPBDT is a very good copper corrosion inhibitor in given condition, whose efficiency increases with the increase of the thiazole concentration as well as with the increase of temperature. EIS results showed that the inhibition effect of the thiazole manifests through an increase of the total resistance and a decrease of the double layer capacitance compared to the blank solution. The kinetic and thermodynamic parameters obtained by the polarization measurements, indicated that the copper corrosion in acidic sulfate solution occurs as an endothermic reaction and that the inhibitor molecules protect the copper during their chemisorption on the metal surface following the Langmuir's adsorption isotherm.

AB - 5-(4'-isopropylbenzylidene)-2,4-dioxotetrahydro-1,3-thiazole, (IPBDT) was tested as a potential copper corrosion inhibitor in 0.1 mol dm-3 Na2SO4 solution at pH=3. Using dc polarization measurements and electrochemical impedance spectroscopy (EIS) the influence of the inhibitor concentration and temperature on the inhibitor efficiency was investigated. The obtained results suggested that IPBDT is a very good copper corrosion inhibitor in given condition, whose efficiency increases with the increase of the thiazole concentration as well as with the increase of temperature. EIS results showed that the inhibition effect of the thiazole manifests through an increase of the total resistance and a decrease of the double layer capacitance compared to the blank solution. The kinetic and thermodynamic parameters obtained by the polarization measurements, indicated that the copper corrosion in acidic sulfate solution occurs as an endothermic reaction and that the inhibitor molecules protect the copper during their chemisorption on the metal surface following the Langmuir's adsorption isotherm.

KW - Copper corrosion

KW - Electrochemical impedance spectroscopy (EIS)

KW - Polarization measurements

KW - Thiazole derivative

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