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Inhibition Mechanism of Some Vinylalkylimidazolium-Based Polymeric Ionic Liquids against Acid Corrosion of API 5L X60 Steel: Electrochemical and Surface Studies.

ABSTRACT: A corrosion inhibition mechanism of API 5L X60 steel exposed to 1.0 M H₂SO₄ was proposed from the evaluation of three vinylalkylimidazolium poly(ionic liquids) (PILs), employing electrochemical and surface analysis techniques. The synthesized PILs were classified as mixed-type inhibitors whose surface adsorption was promoted mainly by bromide and imidazolate ions, which along with vinylimidazolium cations exerted a resistive effect driven by a charge transfer process by means of a protective PIL film with maximal efficiency of 85% at 175 ppm; the steel surface displayed less surface damage due to the formation of metal-PIL complex compounds.

SUBMITTER: Gomez-Sanchez G

PROVIDER: S-EPMC9608421 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature

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Inhibition Mechanism of Some Vinylalkylimidazolium-Based Polymeric Ionic Liquids against Acid Corrosion of API 5L X60 Steel: Electrochemical and Surface Studies.

Gómez-Sánchez Giselle G Olivares-Xometl Octavio O Likhanova Natalya V NV Arellanes-Lozada Paulina P Lijanova Irina V IV Díaz-Jiménez Víctor V Guzmán-Lucero Diego D Arriola-Morales Janette J

ACS omega 20221014 42

A corrosion inhibition mechanism of API 5L X60 steel exposed to 1.0 M H<sub>2</sub>SO<sub>4</sub> was proposed from the evaluation of three vinylalkylimidazolium poly(ionic liquids) (PILs), employing electrochemical and surface analysis techniques. The synthesized PILs were classified as mixed-type inhibitors whose surface adsorption was promoted mainly by bromide and imidazolate ions, which along with vinylimidazolium cations exerted a resistive effect driven by a charge transfer process by mea ...[more]

PMID: 36312349

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