Thiopyrimidine derivatives as new and effective corrosion inhibitors for mild steel in hydrochloric acid: Electrochemical and quantum chemical studies
By Priyanka Singh and Ambrish Singh and M.A. Quraishi
Published in Journal of the Taiwan Institute of Chemical Engineers
NULL
2016
Abstract
The corrosion inhibition properties of thiopyrimidines derivatives viz. 5-cyano-6-phenyl-2-thioxo-2,3-dihydropyrimidin-4-one (TP-1), 5-cyano-2-thioxo-6-(p-tolyl)-2,3 dihydropyrimidin-4-one (TP-2), 5-cyano-6-(4-methoxyphenyl)-2-thioxo-2,3-dihydropyrimidin-4-one (TP-3), 6-(4-(dimethylamino)phenyl)-5-cyano-2-thioxo-2,3-dihydropyrimidin-4-one (TP-4) were investigated as corrosion inhibitors by weight loss, electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization methods. Among all thiopyrimidines TP-4 exhibited maximum efficiency of 97% at 200
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