Ethylethanolammonium 4-nitrobenzoate: Synthesis, structural characterization, thermal analysis, non-isothermal kinetic investigations and corrosion inhibitor efficiency
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CRIŞAN, Manuela E., VLASE, Gabriela, PLESU, Nicoleta, PETRIC, M., CROITOR, Lilia, CHUMAKOV, Yurii, KRAVTSOV, Victor, BOUROSH, Pavlina, VLASE, Titus. Ethylethanolammonium 4-nitrobenzoate: Synthesis, structural characterization, thermal analysis, non-isothermal kinetic investigations and corrosion inhibitor efficiency. In: Journal of Thermal Analysis and Calorimetry, 2018, nr. 1(134), pp. 343-352. ISSN 1388-6150. DOI: https://doi.org/10.1007/s10973-018-7296-6
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Journal of Thermal Analysis and Calorimetry
Numărul 1(134) / 2018 / ISSN 1388-6150

Ethylethanolammonium 4-nitrobenzoate: Synthesis, structural characterization, thermal analysis, non-isothermal kinetic investigations and corrosion inhibitor efficiency

DOI: https://doi.org/10.1007/s10973-018-7296-6

Pag. 343-352

Crişan Manuela E.1, Vlase Gabriela2, Plesu Nicoleta1, Petric M.1, Croitor Lilia3, Chumakov Yurii34, Kravtsov Victor3, Bourosh Pavlina3, Vlase Titus2
 
1 Institute of Chemistry Timisoara of the Romanian Academy,
2 West University of Timisoara,
3 Institute of Applied Physics,
4 Gebze Institute of Technology
 
Disponibil în IBN: 5 decembrie 2018


Rezumat

The demand for corrosion inhibitors with low toxicity has increased in the last years in a wide range of sectors. Our study presents the synthesis, X-ray structure, thermal and kinetic investigation of ethylethanolammonium 4-nitrobenzoate (EEA4NB) as corrosion inhibitor for iron in 3% NaCl solution. Proton transfer and hydrogen bonding in the organic salt were elucidated and confirmed by infrared spectroscopy and single-crystal X-ray diffraction. Simultaneous TGA–DTA and heat flow analysis were used to study the thermal and kinetic behavior of EEA4NB. The results provided useful information about thermal stability and thermal decomposition. The non-isothermal kinetic parameters were estimated by using three different kinetic methods. Electrochemical corrosion measurements show corrosion inhibitor efficiency of EEA4NB for iron in 3% NaCl solution higher than 92% and a decrease of corrosion current and corrosion rate as a result of adsorption of EEA4NB molecules at the metal/solution interface.

Cuvinte-cheie
Alkanolammonium salts, Corrosion inhibition, Electrochemical measurements, Non-isothermal kinetics, Thermal behavior

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