Corrosion inhibition of carbon steel in hydrochloric acid by cationic arylthiophenes as new eco-friendly inhibitors: Experimental and quantum chemical study
| Autor: | Abdulraqeb A. Al-Khamri, Mohamed A. Ismail, Abd El-Aziz S. Fouda, Ashraf S. Abousalem |
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| Rok vydání: | 2021 |
| Předmět: |
Environmental Engineering
Chemistry General Chemical Engineering Cationic polymerization Langmuir adsorption model Hydrochloric acid General Chemistry Electrochemistry Biochemistry symbols.namesake chemistry.chemical_compound Adsorption symbols Thiophene Molecule Polarization (electrochemistry) Nuclear chemistry |
| Zdroj: | Chinese Journal of Chemical Engineering. 40:197-217 |
| ISSN: | 1004-9541 |
| DOI: | 10.1016/j.cjche.2020.09.073 |
| Popis: | This study describes the adsorption behavior of three arylthiophene derivatives namely: 2-(4-Amidino-3-fluorophenyl)-5-[4-methoxy phenyl] thiophene dihydrochloride salt (MA-1217), 2-(4-Amidinophenyl)-5-[4-chlorophenyl] thiophene dihydrochloride salt (MA-1316) and 2-(4-amidino-3-fluorophenyl)-5-[4-chlorophenyl]thiophene dihydrochloride salt (MA-1312) at C-steel in 1.0 mol·L−1 HCl interface using experimental and theoretical studies. Electrochemical and mass loss measurements showed that the inhibition efficiency (IE) of the arylthiophene derivatives increases with increasing concentrations and exhibited maximum efficiency 89% at 21×10−6 mol·L−1 (MA-1217) by mass loss method. The investigated arylthiophene derivatives obey the Langmuir adsorption isotherm. From polarization studies the arylthiophene derivatives act as mixed-type inhibitors. Surface analysis were carried out and discussed. The mode of orientation and adsorption of inhibitor molecules on C-steel surface was studied using molecular dynamics (MD) simulations. Quantum chemical parameters as well as the radial distribution function indices and binding energies confirm the experimental results. |
| Databáze: | OpenAIRE |
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