Ionic liquids (IL) corrosion on A285 carbon steel

Santos, Rogério Freitas dos; Falcade, Tiago; Antonini, Leonardo Marasca; V., Maria R. Ortega; Mattedi, Silvana; Iglesias, M.; Malfatti, Célia de Fraga

doi:10.15446/dyna.v81n184.39512

Cited by 4 publications

(4 citation statements)

References 10 publications

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“…At the end of this step, heating was stopped and agitation remained until the end of the synthesis. 1,2,4,5,12…”

Section: Methodsmentioning

confidence: 99%

“…At the end of this step, heating was stopped and agitation remained until the end of the synthesis. 1,2,4,5,12 The obtained PILs were characterised by 1 H and 13 C nuclear magnetic resonance (NMR), in Varian equipment with 400 MHz 1 H and 9?4 Tesla, with TMS as internal standard. The NMR analyses were carried out using deuterated chloroform as solvent.…”

Section: Protic Ionic Liquid Synthesismentioning

confidence: 99%

“…[1][2][3][4][5][6][7][8][9][10][11] Furthermore, in order to make PILs suitable for their application, whichever it can be, it is necessary to carry out corrosion studies in order to verify the behaviour of the metallic materials where the different applications will take place. However, authors have reported low corrosion trends on steel substrates in contact with PILs, 12,13 as well as corrosion inhibitor behaviour for similar molecules. [14][15][16][17][18][19][20] Related to the corrosion inhibition application, carboxylic acids, organic salts and amines are applied in sublimated form on the substrate, and they are reported as volatile corrosion inhibitors.…”

Section: Introductionmentioning

confidence: 99%

“…Protic ionic liquids were synthetised with monoethanolamine (2-hydroxyethylamine as named by International Union of Pure and Applied Chemistry) (MEA) and formic, propionic and butyric acids to obtain 2-hydroxiethylamine formiate, 2-hydroxiethylamine propionate and 2-hydroxiethylamine butanoate respectively. 4,11,12 The API X70 steel was chosen as substrate for this study, since its major application resides in the oil and gas industry, as well as some of the PILs applications, where corrosion problems are extremely relevant.…”

Section: Introductionmentioning

confidence: 99%

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Influence of anion chain length of protic ionic liquids on the corrosion resistance of API X70 steel

Ortega-Vega

Kunst

Silva

et al. 2015

Corrosion Engineering, Science and Technology

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The objective of this paper is to evaluate the corrosion resistance of API X70 steel in three different protic ionic liquids (PILs). Protic ionic liquids cation was 2-hydroxiethylammonium, and their anion was a carboxylate where the carbon chain length was varied. The synthetised PILs were characterised by nuclear magnetic resonance. The corrosion resistance of API X70 steel was evaluated on the hand of the monitoring of the open circuit potential and electrochemical impedance spectroscopy. Results showed that PIL adsorption on the substrate surface occurs to form a film that enhances corrosion inhibition effects. However, the adsorbed film can break due to desorption that exposes the substrate surface and promotes corrosion of the substrate. In addition, it was observed that corrosion inhibition effects improve with the increase in the anion carbon chain length, since the longer is the anion the larger is the substrate coverage.

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“…At the end of this step, heating was stopped and agitation remained until the end of the synthesis. 1,2,4,5,12…”

Section: Methodsmentioning

confidence: 99%