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Spectral and thermal studies of 4-(phenyldiazenyl)phenyl 2-furoate as corrosion inhibitor for carbon steel

Domenii publicaţii > Chimie + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: A.Moanţã, B.Tutunaru, P.Rotaru

Editorial: Journal of thermal analysis and calorimetry, 111 (2), p.1273-1279, 2013.


The azo-ester, namely 4-(phenyldiazenyl)phenyl 2-furoate (PPF) by a coupling reaction between
4-(phenyldiazenyl)phenol and 2-furoyl chloride in the presence of pyridine was obtained. For
characterization of this compound UV-Vis, FTIR and Thermal analysis were used. PPF was investigated as
corrosion inhibitor for carbon steel in saline waters using potentiodynamic polarization. Morphology of the
surface before and after corrosion was examined by optical microscopy. Potentiodynamic polarization
shows that the corrosion current densities decrease and values of polarization rezistance and inhibition
efficiency increase with PPF concentration reaching a maximum of 89.6 %, at 0.1 mmol L-1.

Cuvinte cheie: Spectral study, Thermal analysis, Corrosion inhibition, Potentiodynamic