Sweet Corrosion Inhibition by CO<sub>2</sub> Capture
The most practical and economical way to combat the problems derived from CO<sub>2</sub> corrosion (sweet corrosion) is the use of corrosion inhibitors of organic origin. Its main protection mechanism is based on its ability to adsorb on the metal surface, forming a barrier between the m...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-08-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/27/16/5209 |
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| author | Jesus Porcayo-Calderon Jorge Canto L. M. Martinez-de-la-Escalera Adrian Neri |
| author_facet | Jesus Porcayo-Calderon Jorge Canto L. M. Martinez-de-la-Escalera Adrian Neri |
| author_sort | Jesus Porcayo-Calderon |
| collection | DOAJ |
| description | The most practical and economical way to combat the problems derived from CO<sub>2</sub> corrosion (sweet corrosion) is the use of corrosion inhibitors of organic origin. Its main protection mechanism is based on its ability to adsorb on the metal surface, forming a barrier between the metal surface and the aggressive medium. However, despite its excellent performance, its inhibition efficiency can be compromised with the increase in temperature as well as the shear stresses. In this study, the use of an inorganic inhibitor is proposed that has not been considered as an inhibitor of sweet corrosion. The reported studies are based on using LaCl<sub>3</sub> as a corrosion inhibitor. Its behavior was evaluated on 1018 carbon steel using electrochemical measurements, such as potentiodynamic polarization curves, open-circuit potential measurements, linear polarization resistance measurements, and electrochemical impedance. The results showed an inhibition efficiency of the sweet corrosion process greater than 95%, and that the inhibition mechanism was different from the classic corrosion process in CO<sub>2</sub>-free electrolytes. In this case, it was observed that the inhibitory capacity of the La<sup>3+</sup> cations is based on a CO<sub>2</sub>-capture process and the precipitation of a barrier layer of lanthanum carbonate (La<sub>2</sub>(CO<sub>3</sub>)<sub>3</sub>). |
| first_indexed | 2024-03-09T04:03:05Z |
| format | Article |
| id | doaj.art-f4662255e49e4e9592193a177b4c4111 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-09T04:03:05Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-f4662255e49e4e9592193a177b4c41112023-12-03T14:11:34ZengMDPI AGMolecules1420-30492022-08-012716520910.3390/molecules27165209Sweet Corrosion Inhibition by CO<sub>2</sub> CaptureJesus Porcayo-Calderon0Jorge Canto1L. M. Martinez-de-la-Escalera2Adrian Neri3Department of Chemical Engineering and Metallurgy, University of Sonora, Hermosillo 83000, MexicoCorrosion y Proteccion (CyP), Buffon 46, Mexico City 11590, MexicoCorrosion y Proteccion (CyP), Buffon 46, Mexico City 11590, MexicoCorrosion y Proteccion (CyP), Buffon 46, Mexico City 11590, MexicoThe most practical and economical way to combat the problems derived from CO<sub>2</sub> corrosion (sweet corrosion) is the use of corrosion inhibitors of organic origin. Its main protection mechanism is based on its ability to adsorb on the metal surface, forming a barrier between the metal surface and the aggressive medium. However, despite its excellent performance, its inhibition efficiency can be compromised with the increase in temperature as well as the shear stresses. In this study, the use of an inorganic inhibitor is proposed that has not been considered as an inhibitor of sweet corrosion. The reported studies are based on using LaCl<sub>3</sub> as a corrosion inhibitor. Its behavior was evaluated on 1018 carbon steel using electrochemical measurements, such as potentiodynamic polarization curves, open-circuit potential measurements, linear polarization resistance measurements, and electrochemical impedance. The results showed an inhibition efficiency of the sweet corrosion process greater than 95%, and that the inhibition mechanism was different from the classic corrosion process in CO<sub>2</sub>-free electrolytes. In this case, it was observed that the inhibitory capacity of the La<sup>3+</sup> cations is based on a CO<sub>2</sub>-capture process and the precipitation of a barrier layer of lanthanum carbonate (La<sub>2</sub>(CO<sub>3</sub>)<sub>3</sub>).https://www.mdpi.com/1420-3049/27/16/5209corrosionCO<sub>2</sub> capturelanthanum chloridelanthanum carbonateinhibitor |
| spellingShingle | Jesus Porcayo-Calderon Jorge Canto L. M. Martinez-de-la-Escalera Adrian Neri Sweet Corrosion Inhibition by CO<sub>2</sub> Capture Molecules corrosion CO<sub>2</sub> capture lanthanum chloride lanthanum carbonate inhibitor |
| title | Sweet Corrosion Inhibition by CO<sub>2</sub> Capture |
| title_full | Sweet Corrosion Inhibition by CO<sub>2</sub> Capture |
| title_fullStr | Sweet Corrosion Inhibition by CO<sub>2</sub> Capture |
| title_full_unstemmed | Sweet Corrosion Inhibition by CO<sub>2</sub> Capture |
| title_short | Sweet Corrosion Inhibition by CO<sub>2</sub> Capture |
| title_sort | sweet corrosion inhibition by co sub 2 sub capture |
| topic | corrosion CO<sub>2</sub> capture lanthanum chloride lanthanum carbonate inhibitor |
| url | https://www.mdpi.com/1420-3049/27/16/5209 |
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