The Effect of Molecular Structure on the Inhibition of Corrosion of Mild Steel in Hydrochloric Acid Medium by 1-[(4-methoxyphenyl) (Morpholino-4- Yl)methyl]urea

Research Square (Research Square), Год журнала: 2024, Номер unknown

Опубликована: Авг. 12, 2024

The versatile chemistry of Mannich bases offers many opportunities for creating tailor-made molecular structures suited to different needs by simple and relatively inexpensive procedures that can be readily carried out. choice the base, namely, 1-[(4-methoxyphenyl)(morpholino-4-yl)methyl]urea (MMPU), has been primarily based on idea a clear picture role electron-donating nature substituents groups in phenyl ring chiefly govern electrostatic interaction chemisorption which decides inhibition performance compounds. standard weight loss studies, gasometric, potentiodynamic polarization impedance studies form methodology experimental approaches. techniques studied at room temperature elevated temperatures will useful determining efficiency are intended evaluate corrosion potential, current Tafel slopes, help propose suitable mechanism inhibition. charge transfer resistance double-layer capacity values calculated through measurement. surface coverage from adsorption isotherm characterizes process is responsible process. examination metal specimen both under corroded inhibited conditions made Scanning Electron Microscopic (SEM) studies. compounds identified above results correlated with structural electronic effects. This us have insight into culminate identification some potential pickling inhibitors.

Язык: Английский

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Two novel triazine-based quaternary ammonium salt Gemini surfactants as potential corrosion inhibitors for carbon steel in a sulfate-reducing bacteria solution: experimental and theoretical studies

Heliyon, Год журнала: 2024, Номер 10(23), С. e40385 - e40385

Опубликована: Ноя. 20, 2024

In this paper, two triazine ring-containing quaternary ammonium salt Gemini surfactants (C

Язык: Английский

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In-Depth Insight into the Inhibition Mechanism in Iron-Based Composites with Bifunction of Anti-Corrosion and Electromagnetic Wave Absorption Based on Experiments and Theoretical Calculations

Опубликована: Янв. 1, 2023

The design of anti-corrosive magnetic metal microwave-absorbing materials is crucial for enhancing the environmental compatibility and service life military objectives in practical applications. Modifying microwave absorbers with dense, inert hydrophobic coatings an effective approach. Herein, CI@BTSA@OTMS composite were synthesized using improved sol-gel method 2-benzothiazolylthio-succinic acid (BTSA) trimethoxy (octadecyl) silane (OTMS) as precursor materials. corrosion resistance mechanisms investigated both experimental research theoretical calculations. Electrochemical results affirmed that composites exhibited exceptional anti-corrosion potential (Ecorr) shifted positively to 0.05 V, current (Icorr) was low 1.1 × 10−7 A/ cm−2, protection efficiency reached 99.91%. a higher non-wetting property contact angle 138.9°. After 720 hours exposure natural salt spray test, still retained relatively intact morphological compositional characteristics. These can be attributed inhibition corrosive species' proximity due spatial isolation barrier effects, preventing formation electrochemical circuit. Moreover, molecular dynamics simulations quantum chemical calculations are used reveal diffusion media. For electromagnetic performance, introduction organic layer BTSA@OTMS contributed improvement impedance matching absorbers.

Язык: Английский

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Study of the effectiveness of inhibiting corrosion processes in mineralized water-oil environments

Proceedings of the NTUU “Igor Sikorsky KPI” Series Chemical engineering ecology and resource saving, Год журнала: 2023, Номер 4, С. 80 - 87

Опубликована: Дек. 23, 2023

Corrosion is a phenomenon that strongly affects many industries. Everything related to metallurgy, shipbuilding, or the oil industry negatively affected by corrosion processes. This big problem, because number of industrial accidents due reaches more than 75%. Therefore, in this work, effectiveness inhibition processes mineralized water-oil environments was investigated detail. The main goal article study regularity media different composition and at temperature regimes for effective selection mechanism type inhibitor. An method reducing impact today use inhibitors. expedient not only from point view action, but also economic expediency. Inhibitors are added corrosive order stop reduce They can be used as protective barriers form layer, absorbers prevent oxidation In future, inhibitor selected depending on metal conditions reactions responsible occurrence course corrosion. Currently, inhibitors recognized most way intensity destruction structures. At same time, it impossible obtain universal meets requirements high efficiency, manufacturability, toxicological safety, time obtained an economically feasible way. Among various inhibitors, organic ones have shown their protecting low-alloy steels equipment. Metal samples St20 steel, widely manufacture pipelines production equipment, were corroding materials study. pH changed adding solution acetic acid. degree determined massometric method. volume test 150 cm3, adjusted with 5% acid solution. Alkylimidozoline Judging research results, mineral aqueous largely rate corrosion. presence significantly reduces both blocking access oxygen system film inertness chemical components oil. However, found increase content carboxylic acids, does affect any Arguably, alkylamidazoline showed protection room temperature, contrast studies temperatures.

Язык: Английский

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