Evaluation of N-(3-(dimethyl hexadecyl ammonio)propyl) palmitamide bromide as cationic surfactant corrosion inhibitor for API N80 steel in acidic environment

Fouda, A. S.; Elmorsi, M. A.; Shaban, Samy M.; Fayed, Tarek A.; Azazy, O.

doi:10.1016/j.ejpe.2017.10.004

Cited by 28 publications

(9 citation statements)

References 51 publications

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“…1 H NMR spectra of CACDs acquired before and after photobleaching also indicated only minor chemical changes to proton bonding environments (Figure d). As-synthesized CACDs featured clusters of 1 H NMR peaks in several diagnostic regions: 1.8 to 2.5 ppm, 2.5 to 4.5 ppm, and at 8.4 ppm, indicative of protons in the α- or β-position to carbonyl or amide groups, − protons bound to or in the α-position to oxidized carbon species (i.e., alcohol, ether, ester, carbonyl) , and non-exchangeable amide protons, − respectively. In contrast, no carboxylic acid protons were observed due to exchange of these acidic protons in the D 2 O solvent.…”

Section: Results and Discussionmentioning

confidence: 99%

Photochemical Transformations of Carbon Dots in Aqueous Environments

Frank

Sigmon

Deline

et al. 2020

Environ. Sci. Technol.

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The unique physicochemical and luminescent properties of carbon dots (CDs) have motivated research efforts toward their incorporation into commercial products. Increased use of CDs will inevitably lead to their release into the environment where their fate and persistence will be influenced by photochemical transformations, the nature of which is poorly understood. This knowledge gap motivated the present investigation of the effects of direct and indirect photolysis on citric and malic acid−based CDs. Our results indicate that natural sunlight will rapidly and non-destructively photobleach CDs into optically inactive carbon nanoparticles. We demonstrate that after photobleaching, • OH exposure degrades CDs in a two-step process that will span several decades in natural waters. The first step, occurring over several years of • OH exposure, involves depolymerization of the CD structure, characterized by volatilization of over 60% of nascent carbon atoms and the oxidation of nitrogen atoms into nitro groups. This is followed by a slower oxidation of residual carbon atoms first into carboxylic acids and then volatile carbon species, while nitrogen atoms are oxidized into nitrate ions. Considered alongside related CD studies, our findings suggest that the environmental behavior of CDs will be strongly influenced by the molecular precursors used in their synthesis.

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Section: Results and Discussionmentioning

confidence: 99%

Photochemical Transformations of Carbon Dots in Aqueous Environments

Frank

Sigmon

Deline

et al. 2020

Environ. Sci. Technol.

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“…A glance through the previous literature involving corrosion inhibition in 15 % HCl, as discussed in the introduction, reveals that the current HDBI inhibitor at a concentration of 50 mg L À 1 has demonstrated excellent corrosion inhibition efficiencies of 97 %. Note that most of the previous works [18][19][20][21][22][23][24][25][26][27][28] used much higher concentrations of inhibitors with lower inhibition efficiencies. The adsorption nature of HDBI on LCS was predicted to be mainly a chemisorption process as displayed by the estimated ΔG ads values above À 40 kJ mol À 1 for all investigated techniques and the E a value above the threshold of 80 kJ mol À 1 .…”

Section: Discussionmentioning

confidence: 99%

“…al [21] on J55 steel where IM-2 was found to exhibit above 90 % efficiency at 400 ppm concentration. Fouda et al [22,23] demonstrated the effectiveness of hydrophobic alkyl chains using N- [3-(dimethyloctylammonio)propyl]palmitamide bromide and N- [3-(dimethylhexadecylammonio)propyl] palmitamide bromide on N80 mild steel substrate. Both compounds were found to achieve about 98 % efficiency at 1 mM ( � 640 mg L À 1 ) concentration in 1 M HCl at 60°C.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of 1‐Hexadecylbenzimidazole as a Corrosion Inhibitor on Low Carbon Steel 15 % HCl Solution Interface

Odewunmi

Mazumder

2021

ChemistrySelect

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The performance of 1-Hexadecylbenzimidazole (HDBI) as an effective corrosion inhibitor of low carbon steel (LCS) in 15 % HCl solution was evaluated with different electrochemical techniques and weight loss measurements. HDBI was a mixedtype corrosion inhibitor with 50 mg L À 1 concentration achieving a 97 % corrosion inhibition efficiency in 15 % HCl solution at 25°C. The nature of adsorption of HDBI on LCS in the corrosive medium was predicted to be chemisorption, as revealed by the Langmuir isotherm model and the thermodynamic study.Weight loss measurements of 50 mg L À 1 HDBI at a different temperature indicated the effectiveness of HDBI at elevated temperatures. The X-ray photoelectron spectroscopy (XPS) was used to ascertain the chemical state of the adsorbed HDBI on the LCS surface. The surface morphology analysis was investigated with a flame emission scanning electron microscope integrated with an energy dispersive spectrometer (FESEM-EDX).

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“…The application of cationic surfactants as corrosion inhibitors decreases the economic burden of mild steel corrosion [11][12][13][14][15]. A literature review shows that cationic surfactants are added in small quantities to acidic solutions to inhibit MS dissolution [16][17][18]. The cost of treatment with surfactants is much lower than that of ordinary organic compounds [19][20][21] because the surfactant molecules move completely from the bulk of the solution to interface between MS and the acidic media when their concentration is less than the critical micelle concentration [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

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

2020

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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.

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Evaluation of N-(3-(dimethyl hexadecyl ammonio)propyl) palmitamide bromide as cationic surfactant corrosion inhibitor for API N80 steel in acidic environment

Cited by 28 publications

References 51 publications

Photochemical Transformations of Carbon Dots in Aqueous Environments

Photochemical Transformations of Carbon Dots in Aqueous Environments

Evaluation of 1‐Hexadecylbenzimidazole as a Corrosion Inhibitor on Low Carbon Steel 15 % HCl Solution Interface

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

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