scholarly journals 6-Nitro-1,4-di(prop-2-yn-1-yl)quinoxaline-2,3(1H,4H)-dione (NQPr) – a novel corrosion inhibitor for mild steel in hydrochloric acid environment

2019 ◽  
Vol 8 (3) ◽  
Keyword(s):  
Hydrochloric Acid ◽  
Mild Steel ◽  
Corrosion Inhibitor ◽  
Acid Environment

scholarly journals Gravimetrical, theoretical, and surface morphological investigations of corrosion inhibition effect of 4-(benzoimidazole-2-yl) pyridine on mild steel in hydrochloric acid

2020 ◽  
Vol 64 (4) ◽  
pp. 122-130
Author(s):  
A.M. Resen ◽  
M. Hanoon ◽  
R.D. Salim ◽  
A.A. Al-Amiery ◽  
L.M. Shaker ◽  
...  
Keyword(s):  
Hydrochloric Acid ◽  
Mild Steel ◽  
Corrosion Inhibitor ◽  
Molecular Orbital ◽  
Corrosion Inhibition ◽  
Density Functional ◽  
Energy Gap ◽  
Mechanism Of Inhibition ◽  
Acid Environment ◽  
And Behavior

Abstract The corrosion inhibition efficiency of the novel pyridine namely, 4-(Benzoimidazole-2-yl)pyridine has been studied for mild steel in a 1 M hydrochloric acid environment by utilizing gravimetrical techniques. The synthesized inhibitor exhibits a significant inhibitive efficiency of 93.8% at 0.005 M. The adsorption isotherm of the investigated inhibitor on mild steel surface obeys the Langmuir isotherm. Surface morphology investigated by utilizing scanning electron microscopy (SEM) demonstrates a smooth metal surface with the addition of 4-(Benzoimidazole-2-yl)pyridine in a hydrochloric acid environment. Quantum chemical calculations using density functional theory (DFT) have been used to investigate the molecular structure and behavior of 4-(Benzoimidazole-2-yl) pyridine as a corrosion inhibitor. Different parameters have been calculated using DFT, such as energies of highest occupied molecular orbital and lowest occupied molecular orbital (EHOMO and ELUMO), energy gap (∆E), and dipole moment (μ). These parameters were important to elucidate the behavior of the investigated molecule as a corrosion inhibitor in acidic solution and also suggest the mechanism of inhibition.

Anticorrosion response of polymer mixture on mild steel in hydrochloric acid environment

2020 ◽  
Vol 3 (5) ◽  
pp. 663-673
Author(s):  
S. C. Nwanonenyi ◽  
H. C. Obasi ◽  
M. U. Obidiegwu ◽  
I. C. Chukwujike
Keyword(s):  
Hydrochloric Acid ◽  
Mild Steel ◽  
Polymer Mixture ◽  
Acid Environment

Acalypha torta Leaf Extract as Green Corrosion Inhibitor for Mild Steel in Hydrochloric Acid Solution

2013 ◽  
Vol 52 (2) ◽  
pp. 722-728 ◽  
Author(s):  
Pavithra M. Krishnegowda ◽  
Venkatarangaiah T. Venkatesha ◽  
Punith Kumar M. Krishnegowda ◽  
Shylesha B. Shivayogiraju
Keyword(s):  
Hydrochloric Acid ◽  
Acid Solution ◽  
Mild Steel ◽  
Corrosion Inhibitor ◽  
Hydrochloric Acid Solution ◽  
Leaf Extract ◽  
Green Corrosion Inhibitor

Paederia Foetida Leaves Extract as a Green Corrosion Inhibitor for Mild Steel in Hydrochloric Acid Solution

2021 ◽  
Author(s):  
Nayem Hossain ◽  
Mohammad Chowdhury ◽  
A.K.M. Parvez Iqbal ◽  
Md. Sariful Islam ◽  
Nur Yusuf Sheikh Omar
Keyword(s):  
Hydrochloric Acid ◽  
Acid Solution ◽  
Mild Steel ◽  
Corrosion Inhibitor ◽  
Hydrochloric Acid Solution ◽  
Green Corrosion Inhibitor ◽  
Paederia Foetida

Study of three new halogenated oxoquinolinecarbohydrazide N-phosphonate derivatives as corrosion inhibitor for mild steel in acid environment

2020 ◽  
Vol 21 ◽  
pp. 100773
Author(s):  
Caio Machado Fernandes ◽  
Letícia V. Faro ◽  
Vitória G.S.S. Pina ◽  
Maria Cecília B.V. de Souza ◽  
Fernanda C.S. Boechat ◽  
...  
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibitor ◽  
Acid Environment
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