Inhibition of Carbon Steel Corrosion by Some New Organic 2-Hydroselenoacetamide Derivatives in HCl Medium

Abstract

This study aims to prepare 2-hydroselenoacetamide derivatives (5-8) to use some of these compounds as corrosion inhibition for carbon steel in 1 M HCl. The compound C10H10NO2Cl 1 was prepared by reacting between p-aminoacetophenone with chloroacetyl chloride, and then reacted 1 with substituted benzaldehyde to obtain the corresponding derivatives as C17H13N2O4Cl 2, C18H16NO4Cl 3 and C19H18NO4Cl 4. The last step in this study was conducted to obtain the organic hydroselenoacetamide such as C10H11NO2Se 5, C17H14N2O4Se 6, C18H17NO4Se 7, and C19H19NO4Se 8 by reacting chloroaminochalcone and sodium hydrogen selenide. All compounds were characterized by Fourier Transform Infrared Spectroscopy (FTIR), proton nuclear magnetic resonance (1H-NMR), and elemental analysis (CHN). The corrosion inhibition activity of C17H14N2O4Se 6, C18H17NO4Se 7 and C19H18NO4Cl 4 for carbon steel in 1 M HCl solution was investigated by using weight loss methods and electrochemical study. The activation energy of the corrosion reaction was also calculated. The effect of different concentrations and temperatures on inhibition efficiency was investigated. The results showed that the corrosion rate decreased with the increase of the concentration of inhibitors, while the inhibition efficiency and covered area decreased with an increase in the temperature. Polarization studies demonstrated that the inhibitors were of mixed type. The purpose of this study was to prepare, characterize and evaluate the corrosion inhibition activity of hydroselenide compounds for carbon steel in 1 M HCl.

New Heterocyclic Organo-Chalcogenide Compounds: Synthesis, Physicochemical Characterization, and Evaluation of Anticancer Activity against Breast Cancer Cells

“…Morpholine and thiomorpholine are organic heterocyclic compounds which have several practical applications as they are the most favorable organic solvent due to their low cost and can be considered good bases [17]. A large number of heterocyclic bases, such as thiomorpholine and their derivatives, have been reported [18] due to their thermal stability and bioinorganic applications such as antimalarial and antioxidant.…”

“…The reaction was stirred at room temperature for 2 h, filtered, and then the excess solvent was removed under a vacuum. To the filtrate, 30 mL of distilled water was added, and then the resulting solid was filtered, dried, and crystallized from ethanol/ water (ratio 80:20) mixture [18][19] (see Scheme 1).…”

Synthesis, Characterization, and Electrochemical Study of Novel Porphyrin Derivatives as Corrosion Inhibitors for Carbon Steel in HCl Solutions

“…The inhibitory efficiency (%IE) from the polarization investigation was computed using Eq. (1) [35][36];…”

“…( 2) [37][38] and demonstrated that all values are less than 85 mV. Hence, the inhibitor can be classified as an inhibitor mixture from cathodic or anodic inhibitors [35]. corr corr,without inhibitor corr,with inhibitor…”