Latest Research News on HCl Solution Research: Sep – 2019

Benzimidazole and its derivatives as corrosion inhibitors for mild steel in 1M HCl solution

In this paper, the inhibition ability of benzimidazole and its derivatives against the corrosion of soft-cast steel in 1M HCl resolution was studied. The modification of electrical resistance parameters discovered by variation of inhibitors concentration at intervals the vary of 50–250 ppm was a sign of their surface assimilation. The physics surface assimilation parameters projected that these inhibitors retard each electrode and electrode processes through physical surface assimilation and interference the active corrosion sites. The surface assimilation of those compounds obeyed the Langmuir’s surface assimilation isogram. [1]

4-Aminoantipyrine as an inhibitor of mild steel corrosion in HCl solution

4-aminoantipyrine (AAP) was tested as a corrosion matter for soft-cast steel in two M HCl answer victimisation totally different techniques: weight loss, potentiodynamic polarization and chemistry ohmic resistance chemical analysis (EIS). The results showed that AAP is Associate in Nursing matter for soft-cast steel during this medium. The inhibition was assumed to occur via surface assimilation of the matter molecule on the metal surface. within the twenty to sixty ∘C temperature vary, the AAP surface assimilation follows the Flory–Huggins isogram and/or the El-Awady et al. kinetic-thermodynamic model. The protection potency will increase with increasing matter concentration (in the vary 10−310−2 M) however decreases with increasing temperature. The physical science functions of dissolution and surface assimilation processes were calculated. [2]

The effects of Aloe vera extract on corrosion and kinetics of corrosion process of zinc in HCl solution

The result of the extract of burn plant leaves on the corrosion of metal in a pair of M HCl answer was studied victimisation weight loss technique. A. vera extract reserved the corrosion of metal in a pair of M HCl answer and also the inhibition potency enhanced with increasing concentration of the extract however cut with increasing temperature. The surface assimilation of the matter molecules on metal surface was in accordance with Irving Langmuir surface assimilation isogram. A first-order mechanics relationship with relation to metal was obtained with and while not the extract from the mechanics treatment of the information. [3]

Epoxy pre-polymers as new and effective materials for corrosion inhibition of carbon steel in acidic medium: Computational and experimental studies

Present study is intended for the synthesis, characterization and corrosion inhibition behavior of 2 organic compound aromatic epoxy pre-polymers (DAEPs) specifically, N1,N1,N2,N2-tetrakis (oxiran-2-ylmethyl) benzene-1,2-diamine (DAEP1) and 4-methyl-N1,N1,N2,N2-tetrakis (oxiran-2-ylmethyl) benzene-1,2-diamine (DAEP2) for steel corrosion in acidic medium. Synthesized DAEPs were characterised exploitation spectral (Nuclear resonance (1H NMR) and Fourier remodel infrared-attenuated total reflection (FTIR-ATR)) techniques. consistency studies administrated at four totally different temperatures (20–80 °C) increase in temperature causes important reduction in their viscosities. [4]

Corrosion Inhibition and Adsorption Characteristics of API 5L X-52 Steel by an Antibiotic Drug in HCl Solution

The corrosion inhibition potential of associate degree antibiotic known as moxifloxacin for API 5L X-52 steel in two M HCl resolution was investigated mistreatment experimental (gravimetric and chemical science resistance spectroscopy) and theoretical approaches. Results obtained from hydrometric and chemical science resistance spectrum analysis measurements discovered that moxifloxacin inhibit the corrosion of steel, and recorded instant most inhibition potency of half of 1 mile and eighty two.7% severally at 303 ±1 K. applied math thought discovered that there was no vital distinction between the 2 strategies utilized. The surface assimilation behavior of the matter was best delineate by the chemist adsorption isopleth. moment calculated from quantum chemical calculation methodology was found to be in sensible agreement with those reportable for a few good corrosion inhibitors. [5]

Reference

[1] Aljourani, J., Raeissi, K. and Golozar, M.A., 2009. Benzimidazole and its derivatives as corrosion inhibitors for mild steel in 1M HCl solution. Corrosion science, 51(8), (Web Link)

[2] El-Rehim, S.A., Ibrahim, M.A. and Khaled, K.F., 1999. 4-Aminoantipyrine as an inhibitor of mild steel corrosion in HCl solution. Journal of Applied Electrochemistry, 29(5), (Web Link)

[3] Abiola, O.K. and James, A.O., 2010. The effects of Aloe vera extract on corrosion and kinetics of corrosion process of zinc in HCl solution. Corrosion Science, 52(2), (Web Link)

[4] Epoxy pre-polymers as new and effective materials for corrosion inhibition of carbon steel in acidic medium: Computational and experimental studies
Omar Dagdag, Zaki Safi, Rachid Hsissou, Hamid Erramli, Mehdi El Bouchti, Nuha Wazzan, Lei Guo, Chandrabhan Verma, E. E. Ebenso & Ahmed El Harfi
Scientific Reportsvolume 9, Article number: 11715 (2019) (Web Link)

[5] Abeng, F., Ikpi, M., Uwakwe, K. and Ikpi, G. (2017) “Corrosion Inhibition and Adsorption Characteristics of API 5L X-52 Steel by an Antibiotic Drug in HCl Solution”, International Research Journal of Pure and Applied Chemistry, 15(3), (Web Link)

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