Ionic liquids as corrosion inhibitor: From research and development to commercialization

Investigation of Sulfonium-Iodide-Based Ionic Liquids to Inhibit Corrosion of API 5L X52 Steel in Different Flow Regimes in Acid Medium

“… 9 , 10 These molecules are salts consisting of organic or inorganic anions and organic cations that display, in general, melting points below 100 °C, i.e., these are liquids at ambient temperature and possess unique features that stem from the arrangement and chemical distribution of their ions; in addition, the ILs have negligible vapor pressure, thermal stability, nonflammability, high ionic conductivity, and wide electrochemical stability spectrum. 11 − 13 …”

“…Notwithstanding, these compounds represent potential danger for the health, for they are highly toxic chemicals . Currently, environmental regulations concerning the use of chemical substances have limited the application of toxic compounds, which has led to the synthesis of low-toxicity CIs that are easy to handle and biodegradable, i.e., more environmentally friendly like the compounds known as ILs. , These molecules are salts consisting of organic or inorganic anions and organic cations that display, in general, melting points below 100 °C, i.e., these are liquids at ambient temperature and possess unique features that stem from the arrangement and chemical distribution of their ions; in addition, the ILs have negligible vapor pressure, thermal stability, nonflammability, high ionic conductivity, and wide electrochemical stability spectrum. − …”

Temperature Effect on the Corrosion Inhibition of Carbon Steel by Polymeric Ionic Liquids in Acid Medium

“…The use of corrosion inhibitors (CIs) is a frequent practice for preventing the corrosion phenomenon from occurring, which is based on the addition of chemical substances at low concentration to the corrosive medium [ 1 ]. CIs are employed internally in pipeline systems and carbon steel containers [ 2 ] as a low-cost-corrosion-control alternative whose action mechanism proceeds through the adsorption of CI molecules on metal surfaces, thus diminishing the corrosion rate of the metallic system to be protected; industry sectors such as the exploration and production of oil and gas, oil refineries, production of chemical products, heavy industry, water treatment and product additive industry are normally benefited by the protective action of CIs [ 3 ]. The main advantage offered by CIs before other control methods is that their implementation does not require a process stop [ 4 , 5 ].…”

Alkyl phosphonium‐based ionic liquids as promising additives for the corrosion protection of epoxy coatings in saline medium: Effect of the anion

“…The use of organic inhibitors constitutes another fruitful strategy for controlling, reducing, or even preventing reaction between the substrate and the aggressive components 18 . In this regard, ionic liquids (ILs) appeared as promising corrosion inhibitors for a series of metallic substrates due to their low melting point, high ionic conductivity, and low vapor pressure 18–26 . ILs were also combined with some particles to improve anticorrosion efficiency to epoxy coatings.…”

“…18 In this regard, ionic liquids (ILs) appeared as promising corrosion inhibitors for a series of metallic substrates due to their low melting point, high ionic conductivity, and low vapor pressure. [18][19][20][21][22][23][24][25][26] ILs were also combined with some particles to improve anticorrosion efficiency to epoxy coatings. In fact, epoxy coatings loaded with reduced graphene oxide (RGO), 27 GO, 15,28,29 PAni, 9 and PAni/carbon nanotube hybrid materials 8,9 modified with imidazolium-based ILs presented better anticorrosion efficiency when compared with the systems without IL.…”