Some Anionic Surfactants as Corrosion Inhibitors for Carbon Steel in Hydrochloric Acid Solution

2018 ◽  
Vol 786 ◽  
pp. 134-148 ◽  
Author(s):  
Rania Assem ◽  
A.S. Fouda ◽  
A.A. Ibrahim ◽  
M. Saadawy
Keyword(s):  
Carbon Steel ◽  
Hydrochloric Acid ◽  
Acid Solution ◽  
Hydrochloric Acid Solution ◽  
Anionic Surfactants ◽  
Electrochemical Impedance ◽  
Charge Transfer Resistance ◽  
Polarization Data ◽  
Transfer Resistance ◽  
Carbon Steel Surface

The corrosion inhibition effect of some anionic surfactants (Diisononyl phthalate (A), N-oleyl-1, 3-propane –diamine (B), and Sodium lauryl sulphate (C)) on the corrosion of carbon steel in 1M hydrochloric acid solution were studied by chemical method (weight loss) and electrochemical methods (potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). From the results, it was clear that these surfactants are good inhibitors for corrosion of carbon steel in 1M HCl solution. Their inhibition depends mainly on their concentrations and temperature of solution. Polarization data revealed that these surfactants act as mixed type inhibitors. The surfactants adsorptions were found to follow Langmuir’s adsorption isotherm. The thermodynamic parameters of activation and adsorption were calculated and discussed. Adsorption of used surfactants led to a reduction in the double layer capacitance (Cdl) and an increase in the charge transfer resistance (Rct). All measurements used confirmed the adsorption of the surfactants used on carbon steel surface. Confirmation of these various independent techniques proved validity of the obtained data.

Adsorption Behavior and Corrosion Inhibition of S-Benzyl o-Phenylenedioxydithiophosphate for Carbon Steel in Hydrochloric Acid Solution

2014 ◽  
Vol 937 ◽  
pp. 109-112
Author(s):  
Xiu Lan Zhang ◽  
Xiao Lin ◽  
Bin Xie ◽  
Li Ke Zou ◽  
Sha Sha Zhu ◽  
...  
Keyword(s):  
Weight Loss ◽  
Carbon Steel ◽  
Hydrochloric Acid ◽  
Acid Solution ◽  
Corrosion Inhibition ◽  
Hydrochloric Acid Solution ◽  
Hydrochloric Acid Concentration ◽  
Carbon Steel Surface ◽  
Effects Of Temperature ◽  
Mixed Type Inhibitor

The corrosion inhibition of S-benzyl o-phenylenedioxydithiophosphate (BPOTP), for carbon steel in hydrochloric acid solution was studied by electrochemical measurements and weight loss measurements. Polarization curves indicate BPOTP is a mixed-type inhibitor, and the effects of temperature, hydrochloric acid concentration and immersion time were also studied. The studies of weight loss measurement show that the inhibition efficiency was up to 92.82 % at the BPOTP concentration of 40 mg·L-1 in 1.0 M hydrochloric acid solution at 30°C. The adsorption of BPOTP on carbon steel surface obeys the Langmuir isotherm.

INHIBITION EFFECT OF DODECYLAMINE ON CARBON STEEL CORROSION IN HYDROCHLORIC ACID SOLUTION

2012 ◽  
Vol 19 (06) ◽  
pp. 1250060
Author(s):  
ZHENYU CHEN ◽  
LING HUANG ◽  
YUBING QIU ◽  
XINGPENG GUO
Keyword(s):  
Carbon Steel ◽  
Hydrochloric Acid ◽  
Acid Solution ◽  
Hydrochloric Acid Solution ◽  
Steel Surface ◽  
Steel Corrosion ◽  
Inhibition Mechanism ◽  
Polar Group ◽  
Exponential Factor ◽  
Carbon Steel Surface

Dodecylamine spontaneously adsorbs on carbon steel via its polar group (-NH2) in hydrochloric acid solution. Furthermore, it forms a monolayer film on carbon steel surface. The inhibition mechanism of dodecylamine for carbon steel is geometric blocking effect. The adsorption of dodecylamine on carbon steel surface follows Arrhenius equation. The adsorption slightly increases activated energy, but greatly reduces pre-exponential factor value. Atomic force microscopy force curves indicate that at the area without adsorbed dodecylamine, no obvious adhere force occurs. At the area with adsorbed dodecylamine, however, an average 1.3 nN adhere force is observed.

Synthesis and anti-corrosion performance of C21H25NO on corrosion of N80 steel in hydrochloric acid solution

2019 ◽  
Vol 66 (5) ◽  
pp. 573-582
Author(s):  
Yanhua Zhu ◽  
Liqiang Zhao ◽  
Pingli Liu ◽  
Xiao Qu
Keyword(s):  
Hydrochloric Acid ◽  
Acid Solution ◽  
Hydrochloric Acid Solution ◽  
Steel Surface ◽  
Inhibition Efficiency ◽  
Mannich Base ◽  
Electrochemical Impedance ◽  
Transfer Resistance ◽  
Content Type ◽  
N80 Steel

Purpose In this work, a kind of Mannich base (C21H25NO) was synthesized with cinnamal aldehyde, acetophenone and diethylamine in a condensing reflux device based on the conventional method. Optimization of the inhibitor concentration was explored. Design/methodology/approach Spectral properties of this compound was investigated by FTIR, and its inhibition efficiency and mechanism on N80 steel in 20% hydrochloric acid solution were studied by weight loss measurement, electrochemical measurement (potentiodynamic polarization and electrochemical impedance spectroscopy) and surface analytical measurement (scanning electron microscope with energy dispersive spectrometer). Findings The results showed that the new inhibitor reduced the double-layer capacitance and increased the charge transfer resistance. The inhibition efficiency is 99.7% when the concentration of C21H25NO is 3%. The adsorption of C21H25NO on N80 steel surface in 20% HCl solution was found to be spontaneous and steady. Observed from the steel surface, an inhibition film was confirmed to be presented after adding inhibitor and successfully hindered the corrosive ions from reaching the bulk steel. Originality/value A new Mannich base (C21H25NO) was synthesized by cinnamal aldehyde, acetophenone and diethylamine for the corrosion prevention of N80 steel in 20% hydrochloric acid solution.

Adsorption Behavior and Corrosion Inhibition of S-benzyl-O,O'-dibenzyldithiophosphate for Carbon Steel in Hydrochloric Acid Solution

2013 ◽  
Vol 781-784 ◽  
pp. 295-298
Author(s):  
Yan Lu ◽  
Sha Sha Zhu ◽  
Bin Xie ◽  
Chuan Lai ◽  
Qin Huan Yang ◽  
...  
Keyword(s):  
Weight Loss ◽  
Carbon Steel ◽  
Hydrochloric Acid ◽  
Acid Solution ◽  
Corrosion Inhibition ◽  
Hydrochloric Acid Solution ◽  
Hydrochloric Acid Concentration ◽  
Carbon Steel Surface ◽  
Effects Of Temperature ◽  
Mixed Type Inhibitor

The corrosion inhibition of S-benzyl-O,O'-dibenzyldithiophosphate (BBP) for carbon steel in hydrochloric acid solution was studied by electrochemical measurements and weight loss measurements. Polarization curves indicate BBP is a mixed-type inhibitor, and the effects of temperature, hydrochloric acid concentration and immersion time were also studied. The studies of weight loss measurement show that the inhibition efficiency was up to 97.39 % at the BBP concentration of 60 mg·L-1 in 1.0 M hydrochloric acid solution at 30°C. The adsorption of BBP on carbon steel surface obeys the Langmuir isotherm.

scholarly journals Combined Experimental and Theoretical Insights into the Corrosion Inhibition Activity on Carbon Steel Iron of Phosphonic Acids

Molecules ◽  
2020 ◽  
Vol 26 (1) ◽  
pp. 135
Author(s):  
Aurelia Visa ◽  
Nicoleta Plesu ◽  
Bianca Maranescu ◽  
Gheorghe Ilia ◽  
Ana Borota ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibition ◽  
Density Functional ◽  
Energy Gap ◽  
Electrochemical Impedance ◽  
Charge Transfer Resistance ◽  
Phosphonic Acids ◽  
Transfer Resistance ◽  
Potential Map ◽  
Chlorine Ions

The inhibition effect of N,N′-phosphonomethylglycine (PMG) and vinyl phosphonic acid (VPA) on the 3% NaCl acidic solution corrosion of carbon steel iron was studied at different immersion times by potentiodynamic polarization, electrochemical impedance spectroscopy, attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy, and computational methods. It is found from the polarization studies that PMG and VPA behave as mixed-type inhibitors in NaCl. Values of charge transfer resistance (Rct) and double layer capacitance (Cdl) in the absence and presence of inhibitors are determined. The PMG and VPA inhibitors were capable of inhibiting the corrosion process up to ≈91% and ≈85%, respectively. In the presence of PMG, the synergic effect of chlorine ions was observed. Density functional theory (DFT) was engaged to establish the adsorption site of PMG, VPA, and their deprotonated states. For studied compounds, the resulted values of ELUMO, EHOMO, energy gap (∆E), dipole moment (μ), electronic hardness (η), global softness (σ), electrophilic index (ω), and the electronic potential map are in concordance with the experimental data results regarding their corrosion inhibition behavior and adsorption on the metal surface.

scholarly journals Investigation of the corrosion inhibition of carbon steel in hydrochloric acid solution by using ginger roots extract

RSC Advances ◽  
2017 ◽  
Vol 7 (40) ◽  
pp. 24576-24588 ◽  
Author(s):  
H. S. Gadow ◽  
M. M. Motawea
Keyword(s):  
Carbon Steel ◽  
Hydrochloric Acid ◽  
Acid Solution ◽  
Corrosion Inhibition ◽  
Hydrochloric Acid Solution ◽  
Adsorption Behavior ◽  
Different Temperatures ◽  
Hcl Solution

The inhibitive effect and adsorption behavior of ginger roots extract (GRE) on the corrosion of carbon steel in 1.0 M HCl solution at different temperatures were investigated.

scholarly journals Electrochemical and Surface Morphological Studies of Carbon Steel Corrosion by a Novel Polynuclear Schiff Base in HCl Solution

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
K. S. Shaju ◽  
K. Joby Thomas ◽  
Vinod P. Raphael ◽  
Aby Paul
Keyword(s):  
Weight Loss ◽  
Schiff Base ◽  
Carbon Steel ◽  
Hydrochloric Acid ◽  
Adsorption Isotherm ◽  
Acid Solution ◽  
Corrosion Inhibition ◽  
Hydrochloric Acid Solution ◽  
Inhibition Efficiency ◽  
Morphological Studies

The corrosion inhibition efficiency of a potential polynuclear Schiff base, (s)-2-(anthracene-9 (10H)-ylidene amino)-5-guanidinopentanoic acid (A9Y5GPA), on carbon steel (CS) in 1 M hydrochloric acid solution has been investigated using weight loss measurements, electrochemical impedance spectroscopy (EIS), and potentiodynamic polarization studies. The corrosion inhibition efficiencies of parent amine [(s)-2-amino-5-guanidinopentanoic acid] and parent ketone (anthracene-9 (10H)-one) on carbon steel in 1.0 M hydrochloric acid solution have also been investigated using weight loss studies. The electrochemical and weight loss data established that the inhibition efficiency on CS increases with the increase in the concentration of inhibitor, A9Y5GPA. The adsorption of A9Y5GPA obeys the Langmuir adsorption isotherm. Thermodynamic parameters (Kads, ΔGads0) were calculated using the adsorption isotherm. Activation parameters of the corrosion process (Ea, ΔH* and ΔS*) were also calculated from the corrosion rates obtained from temperature studies. Tafel plot analysis revealed that A9Y5GPA acts as a mixed-type inhibitor. A probable inhibition mechanism was also proposed. Surface morphology of the carbon steel specimens in the presence and absence of the inhibitor was evaluated by SEM analysis.

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