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In-depth unveiling the interfacial adsorption mechanism of triazine derivatives as corrosion inhibitors for carbon steel in carbon dioxide saturated oilfield produced water.
- Source :
-
Journal of Colloid & Interface Science . Jun2023, Vol. 639, p107-123. 17p. - Publication Year :
- 2023
-
Abstract
- [Display omitted] • Two novel triazine derivatives (BTT-1 and BTT-2) were synthesized as corrosion inhibitors by a facile one-step method. • BTT-1 and BTT-2 exhibit high inhibitive performance with the inhibition efficiency of 97.9 % and 98.4 %. • The adsorption mechanism of BTT-1 and BTT-2 was explored by theoretical calculations in the aqueous environment. • The effect of substituents on the inhibitive performance of BTT-1 and BTT-2 was unveiled. In this work, two triazine derivatives (BTT-1 and BTT-2) were synthesized by the simple one-step condensation of three components and used as high-efficient corrosion inhibitors to deal with the corrosion issue of carbon steel (CS) in petroleum industry. Electrochemical tests indicate that both BTT-1 and BTT-2 present superior inhibition performance with the inhibition efficiency of 97.9 % and 98.4 % at a low concentration of 0.18 mM, respectively. Quantum chemical calculations reveal that compared to BTT-1 molecule with a butyl chain, the introduction of benzyl group endows BTT-2 molecule with more adsorption sites, which favors the adsorption of BTT-2 molecule on CS surface. Furthermore, the GFN-xTB calculations demonstrate that BTT-1 and BTT-2 could adsorb on CS surface through the formation of Fe−N and Fe−S bonds. Compared to BTT-1, BTT-2 exhibits stronger adsorption on CS surface by forming more and shorter bonds with a more negative adsorption energy, which accounts for the better inhibitive performance of BTT-2. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00219797
- Volume :
- 639
- Database :
- Academic Search Index
- Journal :
- Journal of Colloid & Interface Science
- Publication Type :
- Academic Journal
- Accession number :
- 162208632
- Full Text :
- https://doi.org/10.1016/j.jcis.2023.02.015