Use of a theoretical prediction method and quantum chemical calculations for the design, synthesis and experimental evaluation of three green corrosion inhibitors for mild steel
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| Autores: | , , , , , , , |
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| Formato: | artículo original |
| Fecha de Publicación: | 2020 |
| Descripción: | Three phenylmethanimine derivatives (Schiff bases) were designed after a theoretical prediction of their corrosion inhibition efficiencies and a corroboration through the use of quantum chemical calculations. The molecules were then prepared using a classical condensation reaction between aldehydes and amines but taking in account the tenets of green chemistry. Their application as corrosion inhibitors for ASTM A36 steel in 1 mol L−1 hydrochloric acid media was explored by means of a weight loss analysis, electrochemical tests and a surface morphology analysis to physically evaluate the metallic sacrifice surfaces used. The results of the electrochemical tests revealed that the three compounds have a good anti-corrosion capacity and act as mixed-type corrosion inhibitors. In addition, cross-checking the data from weight loss analysis and electrochemical tests confirm Langmuir monolayer formation theory. The corrosion inhibition efficiencies found range between 83.5 and 95.6%. |
| País: | Kérwá |
| Institución: | Universidad de Costa Rica |
| Repositorio: | Kérwá |
| OAI Identifier: | oai:kerwa.ucr.ac.cr:10669/82628 |
| Acceso en línea: | https://www.sciencedirect.com/science/article/pii/S0927775720304507 https://hdl.handle.net/10669/82628 |
| Palabra clave: | Theoretical predictions Quantum chemistry Green chemistry Corrosion inhibitor Mild steel Electrochemical measurements |