Inhibition properties of 4,5-dihydroxy-4,5-di-p-tolylimidazolidine-2-thione for use on carbon steel in an aggressive alkaline medium with chloride ions: Thermodynamic, electrochemical, surface and theoretical analyses

Berdimurodov, Elyor; Kholikov, Abduvali; Akbarov, Khamdam; Guo, Lei

doi:10.1016/j.molliq.2020.114813

Cited by 44 publications

(7 citation statements)

References 43 publications

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“…Therefore, the NHA-Fe protective layer defends the metal from the corrosion solution, which is the main cause of metal loss [31]. It is clear from the obtained results that the deposition of the studied organic compound is also attributed to rise in the protective film (Figure 8b) [52][53][54][55].…”

Section: Surface Characterization: Sem-edsmentioning

confidence: 71%

“…The NHA densities decrease as the inhibitor's concentration rises; hence, a maximum efficiency value of (92.75%) was attained. This behaviour shows that the inhibitor may stop anodic metal oxidation and cathodic hydrogen evolution [23][24][25][26]. The estimates of the anodic and cathodic Tafel slopes (βa and βc) for the NHA have been changed with certain concentrations which show that the inhibitor affects the cathode's hydrogen gas evaporation reaction kinetics while interfering with the anode's iron dissolving process.…”

Section: Pdp Studymentioning

confidence: 96%

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Experimental, surface and computational studies on nicotinic hydroxamic acid as an efficient and ecofriendly chelating corrosion inhibitor in the gas and oil industry

Dewangan,

Verma,

Haldhar

et al. 2023

Preprint

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In the present work, the nicotinic hydroxamic acid (NHA) was first presented as a more effective corrosion resistance in 1 M HCl. The reason for the selection of 1 M HCl solution is that 1 M HCl solution was used in the acid pickling and acid-cleaning processes. During these processes, the mild steel corroded. The carbonyl and the hydroxyl groups of the selected inhibitor molecule are mainly responsible for the formation of a stable five-membered chelate complex with a metal cation. Its inhibition characteristics were first researched by the electrochemical, surface morphology and quantum chemical methods. The density functional theory (DFT) with the 6−31G (d, p) basis sets were used to analyse the theoretical characteristics of inhibition for NHA. The corrosion prevention activity was utilized on the steel in 1 M HCl using a variety of electrochemical approaches, including potentiodynamic polarization measurements and EIS. In 1 M HCl solution, the maximum inhibition efficiency of 92.75% was achieved for 200 ppm concentration. The existence of multiple double bonds, as well as numerous oxygen atoms of carbonyl and hydroxyl groups of the phytochemicals, is primarily responsible for its superior anti-corrosive properties.

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Section: Surface Characterization: Sem-edsmentioning

confidence: 71%

Section: Pdp Studymentioning

confidence: 96%

Experimental, surface and computational studies on nicotinic hydroxamic acid as an efficient and ecofriendly chelating corrosion inhibitor in the gas and oil industry

Dewangan,

Verma,

Haldhar

et al. 2023

Preprint

Self Cite

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“…The values in chemical softness ( 𝜎 𝐷𝐹𝑇 ) for this inhibitor are considerably higher than those in chemical hardness (η 𝐷𝐹𝑇 ), indicating that the selected compound is a softer molecule. Good chemically soft molecules possess low charge states and exhibit strong polarizability [34][35][36][37] .…”

Section: Quantum Chemical Analysismentioning

confidence: 99%

Polymerization of Acrylamide N-methylene Lactic and Glycolic Acid

Khazratkulova,

Zokirova,

Mukhamedova

et al. 2023

Baghdad Sci.J

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In this research work, the novel polymer base on acrylamide N-methylene lactic and glycolic acid was synthesized and its structural performances were identified by the IR, 1H NMR and 13C NMR spectroscopic investigations. The influencing factors and kinetics of polymerization, viscosity performance were studied and quantum chemical calculations were used to identify the correlation between the structure and properties. It was determined that the polymerization rate of the examined monomers in an aqueous solution, in the presence of DAA, adheres to the standard rules for radical polymerization of acrylamide monomers in solution. An investigation into the pH solution's impact on the kinetics of radical polymerization of acrylamido-N-methylene glycolic and acrylamido-N-methylene lactic acids revealed an extreme dependence with a minimum in a neutral medium. It was found the linear correlation between pH and viscosity. The physical and chemical performance of this polymer depends on the structural parameters related the results of quantum chemical calculation. Biological tests conducted on polyacrylamido-N-methylene lactic acid indicated its potential as a plant growth stimulator. The polymeric form of lactic acid was found to enhance the growth of Dustlik variety wheat seedlings by 40% more efficiently than lactic acid alone.

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“…Where C represents the outlet metal concentration (mol/L) at various effluent volumes; C o shows the inlet metal concentrations (mol/L); is the maximum sorption capacity of metal ion per unit mass of resin (mmol/g); V out is the effluent volume (mL) and W is the resin dosage in the fixed bed column (g); k T is the Thomas rate constant [L/(mol•min)] and Q is the volumetric flow rate (mL/min) [27].…”

Section: Dynamic Adsorption and Elutionmentioning

confidence: 99%

Adsorption Equilibrium, Kinetics, Thermodynamics and Dynamic Separation of Magnesium and CalciumIons from Industrial Wastewater by New Strong Acid Cation Resin of SPVC

Berdimurodov

2021

Pak J Anal Environ Chem

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In the research work, the adsorption equilibrium, kinetics, thermodynamics and dynamic separation of magnesium and calcium ions from industrial wastewater by new strong acid cation resin of SPVC (sulphonated polyvinylchloride) were investigated. The sorption capacity of the studied resin was 3.78 mmol/g and 3.74 mmol/g for magnesium and calcium ions, respectively, according to Langmuir isotherm. It was found that the pseudo−first−order model was better fitted for the adsorption kinetics of magnesium and calcium ions on the resin. The dynamic separation results confirmed that the selected resin effectively separated magnesium and calcium ions from industrial wastewater in the dynamic condition. The change of the standard Gibbs free energy (G) and enthalpy (H), and entropy (S) were calculated. The obtained results confirmed that the adsorption of magnesium and calcium ions on the selected resin is endothermic.

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Inhibition properties of 4,5-dihydroxy-4,5-di-p-tolylimidazolidine-2-thione for use on carbon steel in an aggressive alkaline medium with chloride ions: Thermodynamic, electrochemical, surface and theoretical analyses

Cited by 44 publications

References 43 publications

Experimental, surface and computational studies on nicotinic hydroxamic acid as an efficient and ecofriendly chelating corrosion inhibitor in the gas and oil industry

Experimental, surface and computational studies on nicotinic hydroxamic acid as an efficient and ecofriendly chelating corrosion inhibitor in the gas and oil industry

Polymerization of Acrylamide N-methylene Lactic and Glycolic Acid

Adsorption Equilibrium, Kinetics, Thermodynamics and Dynamic Separation of Magnesium and CalciumIons from Industrial Wastewater by New Strong Acid Cation Resin of SPVC

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