Synergistic effect of cationic gemini surfactants and butanol on the corrosion inhibition performance of mild steel in acid solution

2019 ◽  
Vol 223 ◽  
pp. 623-633 ◽  
Author(s):  
M. Mobin ◽  
R. Aslam ◽  
J. Aslam
Keyword(s):  
Synergistic Effect ◽  
Acid Solution ◽  
Mild Steel ◽  
Corrosion Inhibition ◽  
Gemini Surfactants ◽  
Cationic Gemini Surfactants ◽  
Inhibition Performance

scholarly journals Adsorption and Corrosion Performance of New Cationic Gemini Surfactants Derivatives of Fatty Amido Ethyl Aminium Chloride with Ester Spacer for Mild Steel in Acidic Solutions

Materials ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 2790
Author(s):  
Nashwa S. Bin-Hudayb ◽  
Entsar E. Badr ◽  
M.A. Hegazy
Keyword(s):  
Mild Steel ◽  
Gemini Surfactants ◽  
Ester Group ◽  
Charge Transfer Resistance ◽  
Maximum Efficiency ◽  
Transfer Resistance ◽  
Cationic Gemini Surfactants ◽  
Hydrophobic Chain ◽  
Inhibition Performance ◽  
Chain Lengths

Three new cationic gemini surfactants with ester spacer type 2-2′-(ethane-1,2-diyl bis(oxy)) bis(N-(2-alkanamidoethyl)-N,N-dimethyl-2-oxoethan-1-aminium)) dichloride) (CGSES12, CGSES14 and CGSES16), based on N,N-dimethyl fatty amido ethylamine, were produced. These gemini quaternary ammonium salts were synthesized using a three-step reaction method, starting from th/e condensation of the fatty acid chloride (RCOCl) of various hydrophobic chain lengths (R, C11H23, C13H27, C15H31) with N,N-dimethyl ethylene diamine, followed by the quaternization of the tertiary amino group formed with the spacer of the ester group formed in the second step. The chemical configuration of the surfactants was established by FT-IR, 1HNMR, 13CNMR and Mass spectroscopies. The inhibition performance of three surfactants was studied by weight loss and electrochemical measurements. The results show that CGSES12, CGSES14 and CGSES16 behave as effective inhibitors and surface agents. The maximum efficiency was higher than 94% at 2.5 mM, and the inhibition order was CGSES16 > CGSES14 > CGSES12. This was due to the increment in hydrophobicity of the gemini surfactants. Their adsorption on a mild steel surface followed the Langmuir isotherm. CGSES12, CGSES14 and CGSES16 can be considered mixed-type inhibitors. The presence of CGSES12, CGSES14 and CGSES16 increased charge transfer resistance and decreased the corrosion rate. The adsorption focused on heteroatoms and the surface properties of cationic gemini surfactants.

Corrosion of mild steel in hydrochloric acid solution in the presence of two cationic gemini surfactants with and without hydroxyl substituted spacers

2018 ◽  
Vol 137 ◽  
pp. 62-75 ◽  
Author(s):  
Mohammad Mahdavian ◽  
Ali Reza Tehrani-Bagha ◽  
Eiman Alibakhshi ◽  
Shabnam Ashhari ◽  
Mohammad Javad Palimi ◽  
...  
Keyword(s):  
Hydrochloric Acid ◽  
Acid Solution ◽  
Mild Steel ◽  
Hydrochloric Acid Solution ◽  
Gemini Surfactants ◽  
Cationic Gemini Surfactants

scholarly journals Synergistic effects of halide ions and Acacia senegal gum on the corrosion inhibition of mild steel in sulfuric acid solution

2021 ◽  
Vol 47 (2) ◽  
pp. 686-697
Author(s):  
Jovine Emmanuel ◽  
Joseph Buchweishaija
Keyword(s):  
Sulfuric Acid ◽  
Synergistic Effect ◽  
Acid Solution ◽  
Mild Steel ◽  
Corrosion Inhibition ◽  
Sulfuric Acid Solution ◽  
Inhibition Efficiency ◽  
Synergistic Effects ◽  
Halide Ions ◽  
Acacia Senegal

The synergistic effects of halide ions, Br– and I– and Acacia senegal gum exudates on the corrosion inhibition of mild steel in 0.5 M sulfuric acid solution has been investigated by potentiodynamic polarization measurements and electrochemical impedance spectroscopy techniques. Results showed that Acacia senegal gum exudate moderately reduces the corrosion rate of mild steel. The inhibition efficiencies on mild steel electrodes increased with increase in gum exudate concentrations up to 300 ppm, corresponding to the inhibition efficiency of about 43% and its inhibition efficiency increased up to 81.6% with addition of halide ions due to synergistic effects. The enhancement effect of the halide ions was higher with iodide than with bromide ions. The synergism parameter, S1, evaluated was greater than unity, consistent with synergistic effect. The adsorption of Acacia senegal gum on the mild steel surface obeyed Langmuir’s adsorption isotherm. The results obtained, i.e., corrosion rates of mild steel, inhibition efficiencies of Acacia senegal gum exudates and the synergistic effects of Acacia senegal gum exudates and halides from polarization and impedance measurements were in good agreement. Keywords: corrosion, inhibition, mild steel, synergistic effect, Acacia senegal, gum exudate

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