氧气-Na_2WO_4P_(2.5)/SiO_2体系催化油品氧化深度脱硫  

Deep Desulfurization of Oil with Thiophene by Catalytic Oxidation Using Oxygen-Na_2WO_4P_(2.5)/SiO_2

作　　者：宋华[1] 冯化林[1] 牟祖霖[2] 王臣[3] 孙兴龙[1] 

机构地区：[1]东北石油大学化学化工学院,黑龙江大庆163318 [2]大连理工大学化工与环境生命学部,辽宁大连116024 [3]大庆石化公司,黑龙江大庆163714

出　　处：《化学反应工程与工艺》2011年第5期406-411,共6页Chemical Reaction Engineering and Technology

基　　金：黑龙江省教育厅科学技术研究项目(11531012)

摘　　要：制备了Na2WO4/SiO2和Na2WO4P2.5/SiO2催化剂,并用X射线衍射(XRD)、BET比表面积测试法、数字化扫描电镜(SEM)手段对其进行了表征。以噻吩/石油醚模拟油为原料,以氧气为氧化剂,研究了催化剂的催化脱硫性能,发现Na2WO4P2.5/SiO2催化剂的催化性能优于Na2WO4/SiO2。考察了Na2WO4P2.5/SiO2催化剂质量、氧气流量、反应温度、反应时间及萃取条件对脱硫效果的影响。在噻吩/石油醚模拟油为20 mL、Na2WO4P2.5/SiO2为0.12 g、氧化温度60℃、氧气流量120 mL/min的反应条件下,氧化40 min得到的产物采用甲醇萃取,在剂油比为1,20℃下萃取10 min时,脱硫率可达96.6%。The Na2WO4/SiO2 and Na2WO4P2.5/SiO2 catalysts were prepared and characterized by X-ray diffraction（XRD）,BET specific surface area test method and scanning electron microscope（SEM）.The desulferization performances of thiophene-petroleum ether model oil over the catalysts were investigated using oxygen gas as oxidant.The results indicated that the catalytic performance of the Na2WO4P2.5/SiO2 is better than that of Na2WO4/SiO2.The effects of the mass of the Na2WO4P2.5/SiO2 catalyst,oxygen flow rate,reaction temperature,reaction time and extraction conditions on catalytic oxidative desulfurization were also investigated.Under the conditions of thiophene/petroleum ether model oil 20 mL,Na2WO4P2.5/SiO2 0.12 g,oxygen flow rate 120 mL/min,temperature 60 ℃ and reaction time 40 min,the reaction products were extracted using methanol as the extractant with the solvent/oil volume ratio of 1 for 10 min at 20 ℃,the desulferization ratio reached to 96.6%.

关 键 词：噻吩 磷钨酸盐 氧气 氧化脱硫 萃取脱硫 

分 类 号：TQ028.4[化学工程]