摘要
Abstract
The NiWO4 nanoparticles were synthesized by hydrothermal method. The supported catalysts NiWO4/g-C3 N4 were prepared by a simple mixing-calcination method. XRD, FT-IR, EDS , SEM, BET and XPS were used to characterize the morphology and structure of NiWO4/g-C3 N4 . The prepared NiWO4/g-C3 N4 was used as catalyst, hydrogen peroxide as oxidant, 1-butyl-3-methylimidazolium tetrafluoroborate ionic liquid ( [ BMIM ] BF4 ) as extractant for oxidative desulfurization. The effects of catalyst loading, the amount of hydrogen peroxide, ionic liquid and catalyst, reaction temperature, reaction time, and different sulfur compounds on desulfurization efficiency were studied. The desulfurization rate can reach 97. 35% at the optimum reaction conditions:5 mL of model oil, 0. 2 mL of hydrogen peroxide, 1. 0 mL of [ BMIM] BF4 , 0. 03 g of NiWO4/g-C3 N4 , 80℃ of reaction temperature and 140 min of reaction time. The results showed that NiWO4/g-C3 N4 had good catalytic stability, and the catalytic activity was not significantly reduced after 5 repeated reactions.关键词
NiWO4/g-C3N4/氧化脱硫/二苯并噻吩/离子液体Key words
NiWO4/g-C3 N4/oxidative desulfurization/dibenzothiophene/ionic liquid分类
能源科技
