SO_4^(2-)/ZrO_2催化氧化油品脱硫研究  

Oxidative desulfurization of oils using K_2FO_4 over SO_4^(2-)/ZrO_2-based catalysts

作　　者：张娇静[1,2] 王国建[1,2] 柳艳修[1,2] 李锋[1,2] 张梅[1,2] 陈彦广[1,2] 宋华[1,2] 

机构地区：[1]东北石油大学化学化工学院,黑龙江大庆163318 [2]东北石油大学石油与天然气化工省重点实验室,黑龙江大庆163318

出　　处：《化学工程》2015年第2期10-15,共6页Chemical Engineering(China)

摘　　要：以ZrO2为载体,采用浸渍法制备了SO2-4/ZrO2固体超强酸催化剂,并对其进行了傅里叶红外光谱(FT-IR)、差热-热重(TG-DTA)、X射线衍射(XRD)、吡啶吸附红外光谱(Py-FTIR)和N2吸附比表面积(BET)表征分析;TGDTA结果表明,焙烧温度高于600℃,负载的硫酸根离子开始分解,催化剂焙烧温度不宜超过600℃;Py-FTIR结果证实,SO2-4/ZrO2主要提供的是L酸中心。以噻吩/石油醚体系为模型化合物、K2FeO4为氧化剂,考察了反应温度、催化剂用量、反应时间、氧化剂用量对催化氧化脱硫性能的影响。结果表明:在噻吩/石油醚模拟油20mL、反应温度30℃、SO2-4/ZrO2用量0.2g、反应时间60min,K2FeO4用量0.2g最佳氧化脱硫条件下,经萃取后脱硫率最大可达85.65%。With ZrO2 support,SO2-4/ZrO2 solid superacid catalysts were prepared by impregnation method. The catalysts were characterized by Fourier transform infrared spectroscopy（ FT-IR）,thermogravimetry-differential thermal analysis（ TG-DTA）,X-ray diffraction（ XRD）,pyridine adsorption infrared spectroscopy（ Py-FTIR） and N2-adsorption method（ BET） for specific surface area measurement. TG-DTA results show that sulfate ions loaded on the catalysts calcinated at higher than 600 ℃ start to decompose. The calcination temperature for SO2-4/ZrO2 should be below 600 ℃. Py-FTIR results confirm that SO2-4/ ZrO2 superacid sites are dominantly attributed to Lewis acid sites. Using thiophene / petroleum ether as model compound and potassium ferrate as oxidant,the effects of reaction temperature,catalyst amount,reaction time and oxidant amount on the catalytic oxidation desulfurization were investigated. Under the optimum oxidative desulfurization conditions of thiophene / petroleum ether model oil amount 20 m L,reaction temperature 30 ℃,catalyst amount 0. 2 g,reaction time 60 min,and K2FeO4amount 0. 2g,the highest desulfurization efficiency after extraction can reach 85. 65%.

关 键 词：氧化脱硫 固体超强酸 氧化锆 高铁酸钾 噻吩/石油醚 

分 类 号：TE624.9[石油与天然气工程—油气加工工程]