N-methyl-2-hydroxyethylammonium oleate ionic liquid performance as corrosion inhibitor for mild steel in hydrochloric acid medium
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/223344 |
Resumo: | The aim of the present study is to evaluate the performance of N‐methyl‐2‐ hydroxyethylammonium oleate ([m‐2HEA][Ol]) as a corrosion inhibitor for mild steel in a 0.1‐mol/L hydrochloric acid solution and also investigate the role of chloride in the inhibition mechanism. This protic ionic liquid (PIL) has formerly shown a high efficiency as a corrosion inhibitor in a neutral chloride medium. Electrochemical and weight loss measurements, surface contact angle determination, scanning electron microscopy, and Raman spectroscopy were used to understand the factors that influence the response of the studied inhibitor. Results revealed that [m‐2HEA][Ol] behaves as a mixed‐type adsorption inhibitor, by blocking cathodic sites and by modifying the activation energy of the anodic reaction, and it can reach up to 94–97% of inhibition efficiency. PIL adsorption was enhanced by the excess of positive charge of the mild steel. The effect of inhibitor molecule has been discussed to propose a mechanism that explains the inhibitory action of the corrosion inhibitor, pointing out the role of chloride in the inhibition mechanism. |
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Schmitzhaus, Tobias EduardoOrtega Vega, Maria RitaSchroeder, Roberto MoreiraMuller, Iduvirges LourdesSilva, Silvana Mattedi eMalfatti, Célia de Fraga2021-07-07T04:34:58Z20201521-4176http://hdl.handle.net/10183/223344001127832The aim of the present study is to evaluate the performance of N‐methyl‐2‐ hydroxyethylammonium oleate ([m‐2HEA][Ol]) as a corrosion inhibitor for mild steel in a 0.1‐mol/L hydrochloric acid solution and also investigate the role of chloride in the inhibition mechanism. This protic ionic liquid (PIL) has formerly shown a high efficiency as a corrosion inhibitor in a neutral chloride medium. Electrochemical and weight loss measurements, surface contact angle determination, scanning electron microscopy, and Raman spectroscopy were used to understand the factors that influence the response of the studied inhibitor. Results revealed that [m‐2HEA][Ol] behaves as a mixed‐type adsorption inhibitor, by blocking cathodic sites and by modifying the activation energy of the anodic reaction, and it can reach up to 94–97% of inhibition efficiency. PIL adsorption was enhanced by the excess of positive charge of the mild steel. The effect of inhibitor molecule has been discussed to propose a mechanism that explains the inhibitory action of the corrosion inhibitor, pointing out the role of chloride in the inhibition mechanism.application/pdfengMaterials and corrosion [recurso eletrônico]. Weinheim, Germany. Vol. 71, no. 11 (Nov. 2020), p. 1885-1902Líquidos iônicosInibidores de corrosãoAcid inhibitorsChemisorptionCorrosion inhibitorHydrochloric acidMild steelN-methyl-2-hydroxyethylammonium oleate ionic liquid performance as corrosion inhibitor for mild steel in hydrochloric acid mediumEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001127832.pdf.txt001127832.pdf.txtExtracted Texttext/plain64068http://www.lume.ufrgs.br/bitstream/10183/223344/2/001127832.pdf.txt00c1cee705ec2270d3ab3d08f7b7d03cMD52ORIGINAL001127832.pdfTexto completo (inglês)application/pdf2997773http://www.lume.ufrgs.br/bitstream/10183/223344/1/001127832.pdf9fae33cf8174be1659db23a62a483619MD5110183/2233442021-08-18 04:32:32.433498oai:www.lume.ufrgs.br:10183/223344Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2021-08-18T07:32:32Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
N-methyl-2-hydroxyethylammonium oleate ionic liquid performance as corrosion inhibitor for mild steel in hydrochloric acid medium |
title |
N-methyl-2-hydroxyethylammonium oleate ionic liquid performance as corrosion inhibitor for mild steel in hydrochloric acid medium |
spellingShingle |
N-methyl-2-hydroxyethylammonium oleate ionic liquid performance as corrosion inhibitor for mild steel in hydrochloric acid medium Schmitzhaus, Tobias Eduardo Líquidos iônicos Inibidores de corrosão Acid inhibitors Chemisorption Corrosion inhibitor Hydrochloric acid Mild steel |
title_short |
N-methyl-2-hydroxyethylammonium oleate ionic liquid performance as corrosion inhibitor for mild steel in hydrochloric acid medium |
title_full |
N-methyl-2-hydroxyethylammonium oleate ionic liquid performance as corrosion inhibitor for mild steel in hydrochloric acid medium |
title_fullStr |
N-methyl-2-hydroxyethylammonium oleate ionic liquid performance as corrosion inhibitor for mild steel in hydrochloric acid medium |
title_full_unstemmed |
N-methyl-2-hydroxyethylammonium oleate ionic liquid performance as corrosion inhibitor for mild steel in hydrochloric acid medium |
title_sort |
N-methyl-2-hydroxyethylammonium oleate ionic liquid performance as corrosion inhibitor for mild steel in hydrochloric acid medium |
author |
Schmitzhaus, Tobias Eduardo |
author_facet |
Schmitzhaus, Tobias Eduardo Ortega Vega, Maria Rita Schroeder, Roberto Moreira Muller, Iduvirges Lourdes Silva, Silvana Mattedi e Malfatti, Célia de Fraga |
author_role |
author |
author2 |
Ortega Vega, Maria Rita Schroeder, Roberto Moreira Muller, Iduvirges Lourdes Silva, Silvana Mattedi e Malfatti, Célia de Fraga |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Schmitzhaus, Tobias Eduardo Ortega Vega, Maria Rita Schroeder, Roberto Moreira Muller, Iduvirges Lourdes Silva, Silvana Mattedi e Malfatti, Célia de Fraga |
dc.subject.por.fl_str_mv |
Líquidos iônicos Inibidores de corrosão |
topic |
Líquidos iônicos Inibidores de corrosão Acid inhibitors Chemisorption Corrosion inhibitor Hydrochloric acid Mild steel |
dc.subject.eng.fl_str_mv |
Acid inhibitors Chemisorption Corrosion inhibitor Hydrochloric acid Mild steel |
description |
The aim of the present study is to evaluate the performance of N‐methyl‐2‐ hydroxyethylammonium oleate ([m‐2HEA][Ol]) as a corrosion inhibitor for mild steel in a 0.1‐mol/L hydrochloric acid solution and also investigate the role of chloride in the inhibition mechanism. This protic ionic liquid (PIL) has formerly shown a high efficiency as a corrosion inhibitor in a neutral chloride medium. Electrochemical and weight loss measurements, surface contact angle determination, scanning electron microscopy, and Raman spectroscopy were used to understand the factors that influence the response of the studied inhibitor. Results revealed that [m‐2HEA][Ol] behaves as a mixed‐type adsorption inhibitor, by blocking cathodic sites and by modifying the activation energy of the anodic reaction, and it can reach up to 94–97% of inhibition efficiency. PIL adsorption was enhanced by the excess of positive charge of the mild steel. The effect of inhibitor molecule has been discussed to propose a mechanism that explains the inhibitory action of the corrosion inhibitor, pointing out the role of chloride in the inhibition mechanism. |
publishDate |
2020 |
dc.date.issued.fl_str_mv |
2020 |
dc.date.accessioned.fl_str_mv |
2021-07-07T04:34:58Z |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/223344 |
dc.identifier.issn.pt_BR.fl_str_mv |
1521-4176 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001127832 |
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1521-4176 001127832 |
url |
http://hdl.handle.net/10183/223344 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Materials and corrosion [recurso eletrônico]. Weinheim, Germany. Vol. 71, no. 11 (Nov. 2020), p. 1885-1902 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
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