Patent ID: 7758745

Claim:
A diesel desulfurization method comprising the steps of: a. implementing a modified oxidative desulfurization (UAOD) process comprising the steps of: mixing diesel fuel with room temperature ionic liquid, oxidant, phase transfer catalyst, and acid catalyst in a tank in a mix; b. recycling the ionic liquid and recycling the acid catalyst in aqueous phase; c. removing the sulfur from the diesel fuel in a fluidized bed reactor (FBR) having bed reactor material; wherein the ionic liquid is 1-butyl-3-methylimidazolium hexafluorophosphate [BMIM][PF6], 1-butyl-3-methylimidazolium octyl sulfate [BMIM][OcSO4] and 1-ethyl-3-methylimidazolium ethyl sulfate [EMIM][EtSO4].