scholarly journals Dynamics of formation of during inhibition of steel by sulfanilamide in solutions of hydrochloric acid with different pH

2021 ◽  
Vol 22 (3) ◽  
pp. 432-436
Author(s):  
I.M. Kurmakova ◽  
O.S. Bondar ◽  
I.V. Holub ◽  
O.O. Коrolev
Keyword(s):  
Hydrochloric Acid ◽  
Polarization Resistance ◽  
Inhibition Efficiency ◽  
Diffusion Processes ◽  
Steel Corrosion ◽  
Protective Layers ◽  
Protective Films ◽  
Protonated Forms ◽  
The Difference ◽  
Protonated Molecules

Experimentally proved by the method of polarization resistance formation of protective layers during inhibition steel corrosion by Sulfanilamide in aqueous solutions of hydrochloric acid with different pH. It is shown the difference due to the predominance of the protonated or unprotonated form of the molecule. It was found that at predominance of protonated forms of molecules  (pH £2,4) formed dense protective films and predominance of unprotonated forms of molecules  (pH ³2,4) are formed layers that do not inhibit diffusion processes. Sulfanilamide provides high and stable inhibition efficiency (<90%) in acid chloride solutions in case of formation protective layers consisting of protonated molecules what to consider when use it.

scholarly journals Corrosion Inhibition of Mild Steel in Hydrochloric Acid by 2-Benzoylpyridine and Pyridoxolhydrochloride

2009 ◽  
Vol 6 (2) ◽  
pp. 385-394 ◽  
Author(s):  
A. O. James ◽  
N. C. Oforka ◽  
O. K. Abiola ◽  
B. I. Ita
Keyword(s):  
Hydrochloric Acid ◽  
Mild Steel ◽  
Inhibition Efficiency ◽  
Order Type ◽  
Acid Solutions ◽  
First Order ◽  
Hydrochloric Acid Solutions ◽  
Maximum Inhibition ◽  
The Difference ◽  
Kinetic Treatment

The inhibition of corrosion of mild steel in hydrochloric acid solutions by 2-benzoylpyridine (2BP) and pyridoxolhydrochloride (PXO) at 303K, 313K and 323K has been investigated using weight loss and hydrogen evolution techniques. 2BP exhibited higher maximum inhibition efficiency (78.99%) than PXO (71.93%). Generally inhibition was found to increase with increasing inhibitor concentration and decreasing temperature. A first order type of mechanism has been deduced from the kinetic treatment of the results and the process of inhibition was attributed to physisorption. The difference in the inhibition behaviour of the two compounds has been explained on the basis of structure dependent electron donor properties of the inhibitors

USING OLIVE STONE POWDER FOR STEEL CORROSION INHIBITION

2018 ◽  
pp. 01-09
Keyword(s):  
Hydrochloric Acid ◽  
Room Temperature ◽  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Steel Corrosion ◽  
Inorganic Materials ◽  
High Carbon ◽  
Acidic Solutions ◽  
Life Problems ◽  
Olive Stone

corrosion of metals is the most significant and difficult life problems, especially its produce an economical losses, therefore, many researches carried out in various fields in order to reduce the bad effect of corrosion, particularly in acidic environments. Using corrosion inhibitors is one of the methods of prevention corrosion, which come up on organic and inorganic materials, in this study, dried Olive stone powder used as corrosion inhibitor in solutions of hydrochloric acid with concentrations of 0.5, 1 and 1.5 molarity at room temperature, where 10 gm per litter of acid. The corrosion rates of mild steel samples were measured using potentiostat device with reference of calomel electrode. The result shows that corrosion rate reduced by adding the Olive stone powder. The highest inhibition efficiency percent for acid solutions with concentration of 1.5 molarity is 82.9%, while the lowest was 64.1% in the 0.5 molarity solution, and in the 1 molarity solution was 77.6%. The chemical composition of the Olive stone powder is shown to be an organic matter of a high carbon and hydrogen content making a carbonyl compound which has the greatest effect in inhibition corrosion in acidic solutions such as hydrochloric acid.

scholarly journals Study of Kinetics and Inhibition Efficiency by Isoquinoline-5-Carboxaldehyde for Carbon Steel Corrosion in HCl

2020 ◽  
Vol 55 (3) ◽  
Author(s):  
Raheem A.H. Al-Uqaily ◽  
Subhi A. Al-Bayaty ◽  
Sattar O. Maiws Al-Mayyahi
Keyword(s):  
Weight Loss ◽  
Carbon Steel ◽  
Hydrochloric Acid ◽  
Metal Surface ◽  
Inhibition Efficiency ◽  
Adsorption Process ◽  
Steel Corrosion ◽  
Hydrogen Gas ◽  
Gas Evolution ◽  
Film Layer

In this paper, a study of kinetics and inhibition efficiency by isoquinoline-5-carboxaldehyde of carbon steel corrosion in hydrochloric acid is conducted. The method of weight loss and hydrogen gas evolution was used with various inhibitor concentrations ranging from 150-450 parts per million with several temperatures from 40-60°C. Our results showed that increasing inhibitor concentrations and temperature led to an increase in the inhibition efficiency; this indicates both the adsorption of a film layer on a metal surface and the efficacy of the inhibitor by the attendance of oxygen and nitrogen atoms that have an active part in the adsorption process. In this study entropy, activation, and enthalpy energy were calculated.

scholarly journals Inhibition of Mild Steel Corrosion in Hydrochloric Acid Solution by Ciprofloxacin Drug

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Inemesit A. Akpan ◽  
Nnanake-Abasi O. Offiong
Keyword(s):  
Hydrochloric Acid ◽  
Acid Solution ◽  
Mild Steel ◽  
Hydrochloric Acid Solution ◽  
Room Temperature ◽  
Inhibition Efficiency ◽  
Steel Corrosion ◽  
First Order ◽  
First Order Kinetics ◽  
Mild Steel Corrosion

The inhibition of mild steel corrosion in hydrochloric acid solution by ciprofloxacin drug as an eco-friendly and commercially available inhibitor was studied at room temperature by weight loss technique. It was found that the test drug has a promising inhibitory action against corrosion of mild steel in the medium investigated. The inhibition efficiency was found to increase with a corresponding increase in the concentration of the inhibitor. It was also found that the adsorption as well as the inhibition process followed a first-order kinetics and obeyed Langmuir’s adsorption isotherm.

scholarly journals Experimental and surface morphological studies of corrosion inhibition on carbon steel in HCl solution using some new hydrazide derivatives

RSC Advances ◽  
2021 ◽  
Vol 11 (22) ◽  
pp. 13497-13512
Author(s):  
Abd El-Aziz S. Fouda ◽  
Samir A. Abd El-Maksoud ◽  
Elsherbiny H. El-Sayed ◽  
Hazem A. Elbaz ◽  
Ashraf S. Abousalem
Keyword(s):  
Carbon Steel ◽  
Hydrochloric Acid ◽  
Corrosion Inhibition ◽  
Inhibition Efficiency ◽  
Steel Corrosion ◽  
Inhibitory Effect ◽  
Inhibition Mechanism ◽  
Morphological Studies ◽  
Hcl Solution

The inhibitory effect of three newly synthesized hydrazide derivatives on carbon steel corrosion in hydrochloric acid showed better inhibition efficiency (97.5%) and their inhibition mechanism is presented.

scholarly journals The Behavior of Olive Stone Powder at High Temperature Steel Corrosion

2018 ◽  
Vol 3 (2) ◽  
pp. 27
Author(s):  
Rami A. Qassim ◽  
Sahib M. Mahdi ◽  
Jafar G. Majeed
Keyword(s):  
Hydrochloric Acid ◽  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Steel Corrosion ◽  
Inorganic Materials ◽  
High Carbon ◽  
Acidic Solutions ◽  
Life Problems ◽  
Olive Stone ◽  
Acidic Environments

Corrosion of metals is the most significant and difficult life problems, especially its produce an economical losses, therefore, many researches carried out in various fields in order to reduce the bad effect of corrosion, particularly in acidic environments. Using corrosion inhibitors is one of the methods of prevention  corrosion, which come up on organic and inorganic materials, in this study, dried Olive stone powder used as corrosion inhibitor in solutions of hydrochloric acid with concentrations of 0.5, 1 and 1.5 molarity at 40  and 55 , where 10 gm per litter of acid. The corrosion rates of mild steel samples were measured using potentiostat device with reference of calomel electrode. The result shows that corrosion rate reduced by adding the Olive stone powder. The highest inhibition efficiency percent for acid solutions with concentration of 1.5 molarity is 93.8% at 55 , while the lowest was 49.6% in the 0.5 molarity solution at 55 . The chemical composition of the Olive stone powder is shown to be an organic matter of a high carbon and hydrogen content making a carbonyl compound which has the greatest effect in inhibition corrosion in acidic solutions such as hydrochloric acid. 

Protective postaction of inhibitor IFKhAN-92 for chromium-nickel stainless steel corrosion in hydrochloric acid

2019 ◽  
pp. 20-25
Author(s):  
Ya.G. Avdeev ◽  
◽  
Yu.B. Makarychev ◽  
D.S. Kuznetsov ◽  
L.P. Kazanskii ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Hydrochloric Acid ◽  
Steel Corrosion

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.

Inhibition of pipeline steel corrosion in acidic environment using sulphadoxine and pyrimethamine

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Inhibition Efficiency ◽  
Pipeline Steel ◽  
Electrochemical Techniques ◽  
Steel Corrosion ◽  
Acidic Environment ◽  
Inhibitor Concentration ◽  
Adsorption Data ◽  
Corrosion Inhibition Efficiency ◽  
Inhibitive Action ◽  
Sulphadoxine Pyrimethamine

The anti-corrosive properties of sulphadoxine + pyrimethamine (S+P) on the corrosion of pipeline steel in acidic environment were investigated using electrochemical techniques. The results obtained showed an excellent inhibition efficiency which increased with increase in inhibitor concentration. The corrosion inhibition efficiency increased up to 99.04 % at 0.01M S+P and decreased with rise in temperature down to 85.93 % at 333 K and 0.01 M S+P, suggesting a physiosorptive mechanism of adsorption. Also the adsorption data was fitted into Langmuir and Temkin adsorption isotherms, while the inhibitive action was shown to proceed by mixed inhibition mode.

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