作　　者： ; ; ;

机构地区： 广东石油化工学院

出　　处： 《炼油技术与工程》 2011年第10期58-60,共3页

摘　　要： 采用溶胶-凝胶法制备了TiO2-Al2O3复合载体,将不同含量的Na2WO4负载于TiO2-Al2O3载体上,通过测定比表面积(BET)确定了Na2WO4的最佳负载量为10%。以Na2WO4/TiO2-Al2O3为催化剂,进行了催化柴油的氧化脱硫实验,考察了Na2WO4负载量、催化剂用量、反应温度和反应时间对柴油氧化脱硫反应的影响。结果表明:Na2WO4的引入影响了TiO2-Al2O3载体的表面结构,当Na2WO4负载量为10%时,催化剂Na2WO4/TiO2-Al2O3比表面积最大为221.9 m2/g。Na2WO4/TiO2-Al2O3催化剂的柴油氧化脱硫最佳工艺条件为:硫质量分数为0.776%的柴油25 mL,Na2WO4负载量10%,催化剂用量1 g,反应温度70℃,反应时间2 h。Na2WO4负载量为10%的Na2WO4/TiO2-Al2O3催化剂的柴油氧化脱硫率最高达到85.2%。 TiO2-Al2O3 supports were prepared by Sol-Gel method,different contents of Na2WO4 were supported on TiO2-Al2O3,the optimum loading obtained by BET analysis is 10%.Oxidation desulfurization of diesel was performed with Na2WO4/TiO2-Al2O3 catalyst.The impact of Na2WO4 loading,catalyst dosage,reaction temperature and reaction time on oxidation desulfurization of diesel was investigated.The results show that,the application of Na2WO4 has affected the surface structure of TiO2-Al2O3 supporter.When loading is 10%,the maximum specific area of Na2WO4/TiO2-Al2O3 is 221.9 m2/g.The sulfur removal rate reached 85.2% under the optimum conditions as follows：25 mL diesel fuel with 0.776% of sulfur,1 g of catalyst supported with 10% of Na2WO4,70 ℃ of reaction temperature,2 hours of reaction time.

关 键 词： 柴油 氧化脱硫 钨酸钠 复合载体

领　　域： [石油与天然气工程]