Correlation between corrosion inhibition efficiency in sulfuric acid medium and the molecular structures of two newly eco-friendly pyrazole derivatives on iron oxide surface

Experimental and Theoretical Investigations of Argania spinosa’s Extracts on the Antioxidant Activity and Mild Steel Corrosion’s Inhibition in 1 M HCl

“…This outcome is entirely in line with our expectations. We assumed that when using salt during the artisanal extraction of argan oil, that AO may result in an in- Analyzing Figure 9 and Table 5, we saw a shift in the anodic and cathodic curves towards low current densities, which indicates that the two processes of hydrogen ion reduction and mild steel anodic dissolution are limited in the inhibited media [47]. The limitation of these two processes became more intense while AO and HERA concentrations increased.…”

Study of the effect nitro and hydroxyl substituents of two Imidazopyridines derivatives on inhibitory efficacy: Combining Theoretical and Experimental Study

“…Indeed, the presence of a phenolic donor group (OH) in the Imid2 molecule allowed us to obtain the highest efficiency (92%), Imid1 which has an attractive substituent (NO2) gave relatively less good. Generally, the shape of the non-ideal semicircles observed on the Nyquist diagrams presented in figures (3 and 4), is related to the phenomenon of frequency dispersion of the interfacial impedance, and may be due to roughness as well as heterogeneity on the metal surface [36].…”

“…The findings of the electrochemical experiments were correlated with several adsorption isotherms to better understand the interaction process between the inhibitor molecules and the metal/solution interface. Table 6 summarizes the main adsorption isotherm models used to study the adsorption/desorption equilibrium [34][35][36][37][38][39][40]. Among the different adsorption isotherms considered, the Langmuir isotherm proved to be the best suited (Fig.…”

Adsorption and Inhibition Mechanisms of New Pyrazole Derivatives for Carbon Steel Corrosion in Hydrochloric Acid Solutions Based on Experimental, Computational, and Theoretical Calculations

“…The E interaction (E inter ) value is defined by the equation hereunder 74 = + + E E E E inter (surface solution) i total (15) The low value of E inter confirms interactions between all forms and the iron atoms. 75 Table 9 lists the values of this descriptor for all systems.…”

“…As a universal issue, corrosion leads to tremendous safety and economic casualties worldwide. − Beyond that, corrosion also gives rise to environmental hazards as a result of the release of poisonous solvents and chemicals via the corrosion-ridden metallic components. , Carbon steel (CS) and other iron alloys are commonly employed in various industrial processes, some of which involve the employment of overly concentrated acids. , As a result, a significant portion of metallic components are lost owing to corrosion. − Given the massive losses, a variety of corrosion prevention approaches have been devised to suit the budget, the nature of the metal, and the media. − Regardless, the most prevalent and frequently used method is the application of organic products as inhibitors since they are efficient, easily synthesized, and show high inhibition performance coupled to cost effectiveness. In most cases, the mitigation of corrosion is achieved by developing a protective layer at the interface metal/medium. − According to the literature, electron-rich centers as polar functional groups (−NO 2 , −NH 2 , −NHMe, −OH, −OMe, −CN, etc.) and double/triple links (>CO, –NO, –CC–, –CN, >CS, –NN–, etc.)…”