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Inhibition study of mild steel corrosion in hydrochloric acid by new class synthesized 1,4-benzothiazine derivative | Abstract

Der Pharma Chemica
Journal for Medicinal Chemistry, Pharmaceutical Chemistry, Pharmaceutical Sciences and Computational Chemistry

ISSN: 0975-413X
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Abstract

Inhibition study of mild steel corrosion in hydrochloric acid by new class synthesized 1,4-benzothiazine derivative

Author(s): N. K. Sebbar 1 , H. Elmsellem 2* , M. Ellouz 1 , S. Lahmidi 1 , E. M. Essassi 1 , I. Fichtali 3 , M. Ramdani 4 , A. Aouniti 2 , A. Brahimi 5 and B. Hammouti 2

Inhibition performance of 2-(3-oxo-2,3-dihydro[1,4] benzothiazin-4-yl)acetic acid named (P1), newly syn thesized on the electrochemical behavior of mild steel in molar hydrochloric acid was investigated by using the we ight-loss method, potentiodynamic polarization and electroche mical impedance spectroscopy (EIS) measurements. EI S diagrams show that adsorption of (P1) increases the transfer resistance and decrease the capacitance o f interface metal/solution. The inhibition efficiency for this compound studied increased with the increase in the inhibitor concentrations to attain 93% at the 10-3M of (P1). Effect of temperature is also studied between 308 a nd 353 K. Correlation between quantum chemical calculations a nd inhibition efficiency of the investigated compou nd is discussed using the Density Functional Theory metho d (DFT)


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