Synergistic effect of 1‐dodecanethiol upon inhibition of Schiff bases on carbon steel corrosion in sulphuric acid media

2006 ◽  
Vol 53 (3) ◽  
pp. 147-152 ◽  
Author(s):  
Maryam Ehteshamzadeh ◽  
Taghi Shahrabi ◽  
Mirghasem Hosseini
Keyword(s):  
Carbon Steel ◽  
Synergistic Effect ◽  
Sulphuric Acid ◽  
Schiff Bases ◽  
Steel Corrosion ◽  
Acid Media

Asymmetrical Schiff bases as inhibitors of mild steel corrosion in sulphuric acid media

2003 ◽  
Vol 78 (3) ◽  
pp. 800-808 ◽  
Author(s):  
Mirghasem Hosseini ◽  
Stijn F.L Mertens ◽  
Mohammed Ghorbani ◽  
Mohammed R Arshadi
Keyword(s):  
Mild Steel ◽  
Sulphuric Acid ◽  
Schiff Bases ◽  
Steel Corrosion ◽  
Acid Media ◽  
Mild Steel Corrosion

scholarly journals Synergistic extraction of rhenium (VII) with mixtures of high-aliphatic alcohols and ketones from sulphuric acid media.

2020 ◽  
Vol 11 (3-2020) ◽  
pp. 51-54
Author(s):  
A. M. Dvornikova ◽  
◽  
A. G. Kasikov ◽  
Keyword(s):  
Solvent Extraction ◽  
Synergistic Effect ◽  
Sulphuric Acid ◽  
Extraction Efficiency ◽  
Aliphatic Alcohols ◽  
Synergistic Extraction ◽  
Acid Solutions ◽  
Acid Media ◽  
High Acid ◽  
Wide Range

Rhenium(VII) solvent extraction with synergistic mixtures of neutral extractants (octyl alcohols and ketones) from sulphuric acid media has been investigated. It was observed that the synergistic effect appeared under solvent extraction from high acid solutions, consisting ≥ 5 mol/L H2SO4.The synergistic coefficients were up to 2–2,3 providing 97,5–98,7% rhenium(VII) extraction efficiency at one SX step. High rhenium(VII) SX efficiency maintained in the wide range of extraction mixtures compositions (10–50 % v/v of ketone).

Synergistic Effect of Lysozyme and Vitamin B1 on the Corrosion Inhibition of Carbon Steel in Sulphuric Acid

2012 ◽  
Vol 463-464 ◽  
pp. 895-899 ◽  
Author(s):  
Feng Wang ◽  
Xuan De Ji ◽  
Xin Lu Liu
Keyword(s):  
Carbon Steel ◽  
Synergistic Effect ◽  
Sulphuric Acid ◽  
Corrosion Inhibition ◽  
Potentiodynamic Polarization ◽  
High Efficiency ◽  
Electrochemical Impedance ◽  
Effective Means ◽  
Vitamin B1 ◽  
Inhibition Mechanism

In recent years more attention is paid to high-efficiency and nontoxic corrosion inhibitor. Synergistic inhibition is an effective means to improve the inhibitive force of inhibitor. The aim of this work is to attempt to find out inhibition mechanism and synergistic effect of Lysozyme (LYZ) and vitamin B1 (VB1) and to diversify the application of inhibitor in acidic medium. The corrosion inhibition effect of LYZ and VB1 for carbon steel specimens in 0.5 mol•L-1 sulphuric acid solution have been investigated by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) methods. The obtained results show that carbon steel is more efficiently protected by the mixture of lysozyme and vitamin B1 (LYZ-VB1) than LYZ or VB1. By potentiodynamic polarization method, the highest inhibition efficiencies of 89.5% and 80.04% are observed with single LYZ or VB1, respectively, and an improved inhibition efficiency of 94.2% is obtained with LYZ-VB1 at 25°C.

scholarly journals Adsorption and inhibition behavior of a novel Schiff base on carbon steel corrosion in acid media

2015 ◽  
Vol 24 (3) ◽  
pp. 307-315 ◽  
Author(s):  
Ahmed A. Farag ◽  
M.A. Migahed ◽  
A.M. Al-Sabagh
Keyword(s):  
Schiff Base ◽  
Carbon Steel ◽  
Steel Corrosion ◽  
Acid Media

scholarly journals Experimental Evaluation for the Inhibition of Carbon Steel Corrosion in Salt and Acid Media by New Derivative of Quinolin-2-One

2020 ◽  
pp. 1861-1873
Author(s):  
Mustafa Alaa Mohammed ◽  
Rehab Majed Kubba
Keyword(s):  
Carbon Steel ◽  
Inhibition Efficiency ◽  
Acidic Solution ◽  
Steel Corrosion ◽  
Acid Solutions ◽  
Acid Media ◽  
Langmuir Adsorption ◽  
Inhibition Ability ◽  
Percentage Inhibition Efficiency ◽  
Surface Changes

The inhibition ability of the new derivative (quinolin-2-one), namely (1-{[5-(2-Chloro-phenylazo)-2- hydroy-benzylidene]-amino}-4,7-dimethyl -6-nitro- 1H-quinolin-2-one (CPHAQ2O)) towards carbon steel corrosion in (3.5% NaCl) and (0.5M HCl) solutions were evaluated by potentiodynamic polarization at different inhibitor concentrations. Polarization curves showed that the evaluated compound acted as mixed inhibitors, and the adsorption of the evaluated inhibitor obeys the Langmuir adsorption isotherm in both salt and acid solutions. The results revealed that the percentage inhibition efficiency (%IE) in the salty solution (90.55%) is greater than that in the acidic solution (77.62%). The surface changes of the carbon steel and the film persistency of the inhibitor were studied using SEM (Scanning Electron Microscopy).

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