Gas phase and aqueous phase quantum chemical calculations for the inhibition efficiency of some substituted Benzothiazole (BTH) and its 2-methyl (MeBTH), 2-amino (ABTH), 2-mercapto (MBTH) and 2-phenyl (PhBTH) as corrosion inhibitors for brass in HClO4 were investigated by means of the AM1, PM6, MNDO and RM1 semi-empirical SCF molecular orbital methods. The calculated quantum chemical parameters...

Two PcSn(IV) dicarboxylate molecules were obtained through efficient microwave methodology with the aim to test them as corrosion inhibitors in the oil industry. The compounds were characterized by elemental analysis, IR, UV-vis, (1)H, (13)C NMR, and X-ray diffraction. The relative configuration of the two carboxylates is cis, placing the fatty acid moieties on the same face of the phthalocyani...

In the context of highly efficient, non-toxic and natural organic corrosion inhibitors, Phyllogorgia dilatata was studied as an anticorrosive for mild steel in acid medium. The marine octocoral crude extract (PDCE) was characterized and analyzed by LC-HRMS, revealing the presence of 16 different organic molecules. The corrosion inhibition was evaluated via weight loss study and electrochemical ...

Corrosion simply refers to destructive and unintentional attack on metals. It is extractive metallurgy in reverse. That is, it serves to return metals back to their ores.1 Corrosion has been recognized as a phenomenon that has existed for as long as mankind. It has devastated several plants in the industrial age, bringing into focus the need to study and understand it. Since then, mankind has c...

Corrosion prevention has been one of the major concerns these days various methods have adopted for corrosion prevention. However, use inhibitors proven to be easiest and cheapest method But then most conventional are expensive toxic. Therefore recent focus turned developing non-toxic cheap inhibitors. To achieve that a Polyacrylic acid was successfully grafted on chitosan by thermal using refl...

A theoretical study for three derivatives of pyrazine namely 2-methylpyrazine (MP), 2aminopyrazine (AP) and 2-amino-5-bromopyrazine (ABP), which are recently used as corrosion inhibitors for steel in 1.0 M H2SO4 medium, was undertaken by Density Functional Theory (DFT) at the B3LYP level. Their properties are most relevant to their potential action as corrosion inhibitor and have been calculate...

Hydrogen sulfide (H$) has long been associated with the cause of corrosion damage and sulfide stress cracking (SSC) in high strength steels and high hardness weldments used in oil and gas production, petroleum refining, and petrochemical/chemical processing. Other applications where sulfide species have produced environmental cracking include heavy water production, electric power, marine appli...

The corrosion and corrosion inhibition of lead in aqueous solutions with different pHs (2, 7 and 12) were investigated. The corrosion rate was alculated in the absence and presence of the corrosion inhibitor using polarization and impedance techniques. Amino acids have been used as nvironmentally safe corrosion inhibitors. The inhibition efficiency of the different amino acids at a concentratio...

It is important to protect the environment by decreasing and controlling all causes, which damage and pollute the society, and affect the economy. Different hazards such as industrial pollution, transportation accidents and damage, radioactive pollution, water pollution, petroleum pollution...etc) occurs all the time. Corrosion is considered one of these causes because it can damage everything ...

The protective effect of the aqueous extracts of Santolina pectinata (Lag.) aerial parts (Odorized aqueous extract (AE1) and Deodorized aqueous extract (AE2)) on the corrosion of mild steel (MS) in 1M HCl solution were tested by the weight loss (WL) analysis, potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS) methods. The inhibition efficiency (%IE) is highly ra...