WO_3-ZSM-5/MCM-41催化剂的合成及其催化氧化脱硫研究  

Preparation and catalytic oxidation desulphurization performance of WO_3-ZSM-5/MCM-41 catalyst

作　　者：付辉[1] 李会鹏[1] 赵华[1] 王健[1] 朱明明[1] 

机构地区：[1]辽宁石油化工大学,辽宁抚顺113001

出　　处：《无机盐工业》2014年第7期75-78,共4页Inorganic Chemicals Industry

基　　金：辽宁省博士启动基金资助项目(20081104);2013年辽宁省大学生创新训练项目(201310148033)

摘　　要：以氢氧化钠溶液处理微孔沸石ZSM-5来提供硅铝源,合成了ZSM-5/MCM-41复合结构型分子筛。采用XRD、N2吸附脱附、TEM等方法对其进行了表征,考察了其水热稳定性。实验结果表明,碱处理合成的ZSM-5/MCM-41同时具有微孔孔道和介孔孔道结构,并具有优于介孔MCM-41分子筛的水热稳定性。以ZSM-5/MCM-41为载体负载三氧化钨后应用于噻吩/正辛烷模拟油体系,双氧水为氧化剂,催化氧化脱硫,WO3-ZSM-5/MCM-41(三氧化钨质量分数为10%)表现出良好的催化性能,脱硫率可达到93.6%。A new micro-mesoporous ZSM-5/MCM-41 was prepared with ZSM-5 zeolite （treated in NaOH solution） as the source of silicon.The ZSM-5/MCM-41 was characterized by XRD ,TEM, and N2 adsorption and desorption.In addition, its hydrothermal stability was investigated.The results showed that the composite molecular sieve ZSM-5/MCM-41 had the structure of both microporous ZSM-5 and mesoporous MCM-41, and had the stronger hydrothermal stability than the mesoporous molecular sieve MCM-41.Applied to thiophene/octane model oil system, after loading 10% mass fraction of WO3, the WO3- ZSM-5/MCM-41 （mass fraction of 10% ） showed good catalytic performance when the oxidant was H202, and the desulfurization rate could reach 93.6%.

关 键 词：ZSM-5 碱处理 复合分子筛 催化氧化脱硫 

分 类 号：TQ426.6[化学工程]