Extractive Deep Desulfurization of Liquid Fuels Using Lewis-Based Ionic Liquids

Table 2

Sulfur removal of [Bmim]Cl which was reused for three times in model liquid fuel (n-dodecane + DBT).

Model fuel	Ionic liquid spent	No. of cycle	Sulfur removal (%)
(n-dodecane + DBT)	[Bmim]Cl/FeCl3	I	75.6
(n-dodecane + DBT)	[Bmim]Cl/FeCl3	II	63.2
(n-dodecane + DBT)	[Bmim]Cl/FeCl3	III	47.3

Mass ratio of model fuels/ionic liquid = 5/1; extraction time = 30 min; temperature = 30°C; initial sulfur concentration = 500 ppm.