Theoretically and Experimentally Exploring the Inhibition Effect of Imidazole Sulfonic Acid Derivatives with Multiple Adsorption Sites in 1.0 mol/L HCl

Corrosion inhibitors have played a huge role in daily life and industrial production. Imidazole and sulfonic acid groups have high corrosion inhibition capabilities. To further improve their excellent corrosion inhibition performance, two new sulfonic acid azole corrosion inhibitors (YM and ZM) were...

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Bibliographic Details
Published in:The Korean journal of chemical engineering 2024, 41(7), 292, pp.2117-2132
Main Authors: Wang, Pengjie, Fan, Lin, Song, Yuhao, Deng, Kuaihai, Guo, Lei, Li, Zhonghui, Lin, Yuanhua
Format: Article
Language:English
Subjects:
Acids
Biotechnology
Catalysis
Cathodic corrosion
Charge transfer
Chemistry
Chemistry and Materials Science
Corrosion effects
Corrosion inhibitors
Corrosion products
Corrosion resistance
Density functional theory
Efficiency
Electrochemistry
Imidazole
Industrial Chemistry/Chemical Engineering
Materials Science
Molecular chains
Molecular dynamics
Original Article
Sulfonic acid
Weight loss
X ray photoelectron spectroscopy
화학공학
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Summary:Corrosion inhibitors have played a huge role in daily life and industrial production. Imidazole and sulfonic acid groups have high corrosion inhibition capabilities. To further improve their excellent corrosion inhibition performance, two new sulfonic acid azole corrosion inhibitors (YM and ZM) were synthesized and the effect of carbon chain length on the imidazole sulfonic acid corrosion inhibitor was studied. The weight loss and electrochemical results indicated that the corrosion inhibition efficiency significantly increased with the increase of YM and ZM concentration. At 1.0 g/L of ZM, the corrosion inhibition efficiency of weight loss, EIS and Tafel were 95.02%, 86.61%, and 98.49%, respectively. Electrochemistry further indicated that ZM and YM could form a stable protective film on the surface of Q235 and increased the charge transfer resistance, thereby improving their corrosion inhibition efficiency and belong to cathodic corrosion inhibitors. SEM–EDS, FT-IR, and XPS confirmed that YM and ZM could effectively adsorb on the surface of Q235, and further demonstrated theories through density functional theory and molecular dynamics simulation.
ISSN:0256-1115
1975-7220
DOI:10.1007/s11814-024-00166-6