engleski

Deep eutectic solvent based on choline chloride and propylene glycol as a potential medium for extraction denitrification of hydrocarbon fuels

tThe use of deep eutectic solvents (DES) as “green” solvents could solve at least some ofthe environmental problems associated with the chemical and petrochemical industry.This paper investigates the applicability of DES made of choline chloride and propyleneglycol in a molar ratio of 1:3 for the removal of sulfur and nitrogen compounds fromhydrocarbon mixtures. Extraction experiments were performed in quasi-three-componentsystems, quasi-seven-component model systems and real fuel systems. All the experimentsconfirmed better solubility of pyridine (compared to thiophene) and nitrogen compounds(compared to sulfur ones) in the investigated DES, indicating its potential use as a den-itrification agent. The basic application physico-chemical properties of the investigatedDES were determined. Its applicability in multistage extraction processes was confirmed, its extraction capacity was determined and the ability of its regeneration by evaporationwas demonstrated. Liquid–liquid equilibria in investigated quasi- three-component systemswere described successfully by UNIQUAC activity coefficient model.

deep eutectic solvent ; choline chloride-propylene glycol ; liquid–liquid extraction ; denitrification ; UNIQUAC

nije evidentirano