Correlation between corrosion inhibition efficiency in sulfuric acid medium and the molecular structures of two newly eco-friendly pyrazole derivatives on iron oxide surface

2021 ◽  
pp. 115656
Author(s):  
M.E. Belghiti ◽  
Chin-Hung Lai
Keyword(s):  
Sulfuric Acid ◽  
Iron Oxide ◽  
Acid Medium ◽  
Corrosion Inhibition ◽  
Inhibition Efficiency ◽  
Molecular Structures ◽  
Oxide Surface ◽  
Pyrazole Derivatives ◽  
Sulfuric Acid Medium ◽  
Corrosion Inhibition Efficiency

scholarly journals Synergistic Effect of Thiourea-Zn2+ and L-Phenylalanine on the Inhibition of Corrosion of Mild Steel in Acid Medium

2019 ◽  
Vol 7 (2) ◽  
pp. 72-77
Author(s):  
M.B. Geetha ◽  
◽  
J. Sathish ◽  
S. Rajendran ◽  
◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Mild Steel ◽  
Acid Medium ◽  
Corrosion Inhibition ◽  
Metal Surface ◽  
Inhibition Efficiency ◽  
Protective Film ◽  
Surface Smoothness ◽  
Polarization Study ◽  
Corrosion Inhibition Efficiency

The formulation consisting of 100 ppm Thiourea, 25 ppm Zn2+ and 250 ppm of L-Phenylalanine has 95% corrosion inhibition efficiency with a synergistic effect among Thiourea, L-Phenylalanine and Zn2+ ions. Polarization study shows that this formulation as a mixed inhibitor. FTIR spectra exposed the presence of Fe2+-Thiourea, Fe2+-L-Phenylalanine complex and Zn(OH)2 in protective film. AFM study confirmed the metal surface smoothness following engrossed in the inhibitor and the presence of formed protective film on the metal surface.

Enhanced corrosion inhibitive effect of p-methoxybenzylidene-4,4′-dimorpholine assembled on nickel oxide nanoparticles for mild steel in acid medium

RSC Advances ◽  
2015 ◽  
Vol 5 (10) ◽  
pp. 7098-7111 ◽  
Author(s):  
Poonam M. Wadhwani ◽  
Divya G. Ladha ◽  
Vikram K. Panchal ◽  
Nisha K. Shah
Keyword(s):  
Mild Steel ◽  
Nickel Oxide ◽  
Acid Medium ◽  
Corrosion Inhibition ◽  
Inhibition Efficiency ◽  
Oxide Nanoparticles ◽  
Nickel Oxide Nanoparticles ◽  
Corrosion Inhibition Efficiency

The corrosion inhibition efficiency of p-methoxybenzylidene-4,4′-dimorpholine (p-MBDM) and p-MBDM assembled on nickel oxide nanoparticles (NiONPs) was investigated here.

scholarly journals Copper Leaching Behavior of Iron-Oxide Hosted Copper-Gold Ore in Sulfuric Acid Medium

2008 ◽  
Vol 49 (11) ◽  
pp. 2611-2617
Author(s):  
Xiaobo Min ◽  
Hitoshi Watanabe ◽  
Yasushi Takasaki ◽  
Takahiko Okura ◽  
Muneyuki Tamura ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Iron Oxide ◽  
Acid Medium ◽  
Leaching Behavior ◽  
Gold Ore ◽  
Sulfuric Acid Medium ◽  
Copper Leaching ◽  
Copper Gold

Corrosion inhibition behavior of two quinoline chalcones: insights from density functional theory

2015 ◽  
Vol 33 (3-4) ◽  
pp. 195-202 ◽  
Author(s):  
Gökhan Gece
Keyword(s):  
Density Functional Theory ◽  
Corrosion Inhibition ◽  
Density Functional ◽  
Inhibition Efficiency ◽  
Density Functional Theory Calculations ◽  
Molecular Structures ◽  
Functional Theory ◽  
Corrosion Inhibition Efficiency ◽  
Inhibition Property ◽  
Molecular And Electronic Structure

AbstractThere has been a considerable surge of experimental inquiry in recent years into understanding the factors responsible for the corrosion inhibition efficiency of chalcones; however, the question of what actually determines the efficiency still remains a topic of debate. In this study, the dependence of the inhibition effect of such two compounds, namely, 3-(3-oxo-3-phenyl-propenyl)-1H-quinolin-2-one and 3-(3-oxo-3-phenyl-propenyl)-1H-benzoquinolin-2-one, on their molecular and electronic structure is analyzed using density functional theory calculations. In agreement with experiments, this study found strong evidence to link corrosion inhibition property of the compounds to their actual molecular structures in acidic media.

Adsorption and corrosion inhibition characteristics of two medicinal molecules

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Hydrochloric Acid ◽  
Corrosion Rate ◽  
Mild Steel ◽  
Corrosion Inhibition ◽  
Half Life ◽  
Thermodynamic Data ◽  
Inhibition Efficiency ◽  
Gravimetric Method ◽  
Corrosive Environment ◽  
Corrosion Inhibition Efficiency

The corrosion inhibition characteristics of two medicinal molecules phenylalanine and rutin on mild steel in 1.0M Hydrochloric acid were evaluated using gravimetric method. Corrosion inhibition efficiency of 83.78 and 90.40 % was obtained respectively after seven days. However, phenylalanine showed weak accumulative higher corrosion inhibition efficiency. The presence of both molecules in the corrosive environment reduced the corrosion rate constant and increased the material half-life. Thermodynamic data calculated suggests a spontaneous adsorption of the molecules on the mild steel’s surface.

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