Abstract: Cpper phosphotungstate was synthesize by phosphotungstic acid and nitric acid copper as raw materials. Oxidative desulfurization reaction of model oil was studied by copper phosphotungstate as catalyst and H₂O₂ as oxidant. The experiment indicate various oxidative desulfurization system, reaction temperature, catalytic amount, amount of hydrogen peroxide and reaction time influenced on oxidative desulfurization effect. The results show that a combined copper phosphotungstate, CTAB and H₂O₂ could lead to a good conversion of DBT. Reaction temperature was 40 ℃,catalytic amount was 0.01 g, volume of hydrogen peroxide was 0.5 mL, reaction time was 1 h, which made conversion rate of dibenzothiophene up to 93%. The catalyst may was recycled five times and desulfurization effecience of mode oil isn't decreased. 

Key words: Cpper phosphotungstate,    ,  Oxidative desulfurization,    , Dibenzothiophene,    ,  Desulfurization mechanism

摘要： 采用磷钨酸和硝酸铜为原料合成磷钨酸铜,以磷钨酸铜为催化剂,H2O2 为氧化剂应用于模拟油氧化脱硫反应。考察了不同的氧化脱硫体系、反应温度、催化剂质量、H2O2 的体积和反应时间对脱硫效果的影响。结果表明,H2O2/磷钨酸铜/十六烷基三甲基溴化铵(CTAB)体系具有最高的脱硫率,当反应的温度为40 曟,催化剂的质量为0.01g,H2O2 加入体积为0.5mL,反应的时间为1h,二苯并噻吩的脱除率为93%,催化剂循环使用5次后,脱硫率没有明显下降。

关键词: 磷钨酸铜 , 脱硫 , 二苯并噻吩 , 脱硫机理