关键词: 磷钨酸盐 , 离子液体 , H₂O₂ ,  , 氧化脱硫

Abstract: Seven different dodecatungstophosphates were prepared by using acidic ionic liquids and 12tungstophosphoric acid, and were characterized by XRD, TG and SEM. The result of XRD show that the molecular compound kept keggin structure. TG illustrate that they possessed good thermal stability. SEM result show that the surface structure of the catalyst is good. And their catalytic application in the oxidative desulfurization from fuel had also been investigated. The effect of reaction time, reaction temperature, the dosage of H2O2 were also studied. The sulfur removal (99.72%) was obtained under the following condition: reaction temperature 45 ℃，reaction time 1 h, n(S)/n（catalyst）=300∶1, n(H2O2)/n(S)=4∶1. After reaction, the catalyst is easy to separate, and can be reused 7 times after drying without obvious catalytic loss.

Key words: Dodecatungstophosphate,    ,  Ionic liquid,    ,  Hydrogen peroxide,    , Oxidative desulfurization