Efficiency of cationic gemini surfactants with 3-azamethylpentamethylene spacer as corrosion inhibitors for stainless steel in hydrochloric acid

Synthesis, Structure, Surface and Antimicrobial Properties of New Oligomeric Quaternary Ammonium Salts with Aromatic Spacers

“…The cationic Gemini surfactants adsorb very efficiently on metallic and nonmetallic surfaces and owing to these properties they are used as very effective microbiocides and corrosion inhibitors. Surface, anticorrosion and antimicrobial activity of Gemini surfactants with flexible polymethylene spacers and polymethylene spacers modified by heteroatoms have been extensively studied so far [ 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 ]. However there are limited data concerning Gemini and oligomeric surfactants with rigid, benzene spacers [ 38 , 39 , 40 ].…”

Experimental and theoretical research on a new corrosion inhibitor for effective oil and gas acidification

“…In addition, elemental analysis was carried out by using energy dispersive spectroscopy (EDS), and the results are shown in Table 5. Comparing the samples in the absence and presence inhibitor, the content of the element N increased signicantly, indicating that an adsorption lm was formed on the surface of the specimen, [16][17][18] which isolated the acid solution and protected the specimen. These results are consistent with the inhibitor performance results obtained from the weight loss, SKP, adsorption isotherm and electrochemical experiments.…”

“…At the same time, the hydrophobic chains can align on the metal surface to form a hydrophobic lm, which hinders the diffusion of water molecules into the cathode region and inhibits the cathode reaction. 17,18 In addition, because of the molecular structure itself, the cations and anions can form a wide range of structures. 8,11,12,20 In previous literature, imidazolium-based and benzimidazole ionic liquids were researched as inhibitors for mild steel in acid solution, and the results provide guidance or direction to design and develop new ionic liquids as inhibitors.…”

Organic Corrosion Inhibitors

“…The gemini alkylammonium salts possess a very low critical micelle concentrations (cmc), which is up to hundred times lower than cmc's of corresponding monomeric surfactants. Gemini surfactants also have a larger molecular area in comparison to monomeric analogs which cause them to act more efficiently as corrosion inhibitors [80,[101][102][103][104][105][106][107][108][109][110]. Dimeric surfactant 1,4-tetramethylene-bis(N-dodecyl-N,N-dimethylammonium bromide) (12-4-12) is more efficient in decreasing corrosion rate of carbon steel in 1 M HCl than its monomeric analogue N-dodecyl-N,N,N-trimethylammonium bromide (DTAB).…”