Acidified Ionic Liquid Assisted Recovery of Vanadium and Nickel from Oilsands Bitumen was written by Chauhan, Garima;de Klerk, Arno. And the article was included in Energy & Fuels in 2021.COA of Formula: C4H7ClN2 This article mentions the following:
Extraction of vanadium and nickel from diluted oil sands bitumen was investigated. The extraction was performed using HCl acidified ionic liquids, aqueous NaCl diluted ionic liquids, and water diluted ionic liquids to evaluate the relative contributions of acidity, dilution, and ionic strength on the extraction efficiency of ionic liquids Experiments were conducted with 1-methylimidazolium chloride ([HMIM]-Cl), 1-ethyl-3-Me imidazolium chloride ([EMIM]-Cl), 1-butyl-3-Me imidazolium chloride ([BMIM]-Cl), and 1-ethyl-3-Me imidazolium di-Et phosphate ([EMIM]-DEP). Acid concentration was varied over the range 0.1-10 M, and dilution was varied over the range 2-30 wt %. The study included an evaluation of the change in viscosity on dilution, and it was found that heavy oil viscosity mixing rules could adequately describe the change in viscosity on dilution The combined effect of the dissociation equilibrium and partitioning of the resulting metal containing species between the phases provided a plausible explanation to unify all of the observations in this work. It could explain the differences between vanadium and nickel extraction, as well as the differences in extraction behavior of the ionic liquid mixtures Acidification of the ionic liquids influenced the dissociation equilibrium of the metal ions (VO2+ or Ni2+) and the organic bases, e.g., porphyrins. The anionic species in the ionic liquid (Cl– or [PO4(C2H5)2]–) affected the extent of metal ion exchange and its partitioning between the oil and ionic liquid phases. Nickel was efficiently extracted as the chloride salt. Diethylphosphate was a better counterion to facilitate vanadium extraction In the experiment, the researchers used many compounds, for example, 1-Methyl-1H-imidazol-3-ium chloride (cas: 35487-17-3COA of Formula: C4H7ClN2).
1-Methyl-1H-imidazol-3-ium chloride (cas: 35487-17-3) belongs to imidazole derivatives. Many natural products, especially alkaloids, contain the imidazole ring. These imidazoles share the 1,3-C3N2 ring but feature varied substituents. Many drugs contain an imidazole ring, such as certain antifungal drugs, the nitroimidazole series of antibiotics, and the sedative midazolam.COA of Formula: C4H7ClN2
Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem