介孔-大孔HPW/TiO_(2)催化剂的制备及其催化氧化脱硫性能的研究  

Preparation of mesoporous-macroporous HPW/TiO_(2) catalyst and its catalytic performance for oxidative desulfurization

作　　者：陈莉 黄丹 吴意囡 单海林 CHEN Li;HUANG Dan;WU Yi-nan;SHAN Hai-lin(Taizhou Institute of Product Quality and Safety Inspection,Taizhou 318000,China;School of Chemistry,Chemical Engineering and Life Sciences,Wuhan University of Technology,Wuhan 430070,China)

机构地区：[1]台州市产品质量安全检测研究院,浙江台州318000 [2]武汉理工大学化学化工与生命科学学院,湖北武汉430070

出　　处：《现代化工》2022年第1期132-135,139,共5页Modern Chemical Industry

基　　金：台州市科学技术局科研项目(2002gy03)。

摘　　要：为了有效降低SO_(2)在环境中的排放,以嵌段共聚物F127和新合成的PMMA微球为双模板,采用溶胶-凝胶法制备了三维有序介孔-大孔x-HPW/TiO_(2)催化剂。利用扫描电镜、透射电镜、氮气吸附-脱附、X射线衍射和红外光谱研究了其结构,并考察了其催化氧化燃油中有机硫的性能。结果表明,x-HPW/TiO_(2)催化剂中存在高度有序的介孔-大孔结构,Keggin结构的HPW均匀分散在TiO_(2)孔道骨架中。该催化剂在常压、60℃下可使燃油中的二苯并噻吩(DBT)催化氧化完全,循环使用6次后对DBT的去除率仍可达到96%。To reduce the emission of SOx effectively in the environment, a kind of three-dimensional highly ordered mesoporous-macroporous x-HPW/TiO_(2)(3 DO m/M x-HPW/TiO_(2)) catalyst is synthesized successfully through sol-gel method using block copolymer F127 and self-synthesized PMMA microspheres as templates.The structure of catalyst is studied by scanning electron microscope, transmission electron microscopy, nitrogen adsorption-desorption isotherms, X-ray diffraction and Fourier transform infrared spectra, and its catalytic performance for oxidation of organic sulfur in fuel oil is also explored.The results show there exists highly ordered mesoporous-macroporous structures in the catalyst, and HPW with a Keggin structure disperses evenly in TiO_(2)framework.Dibenzothiophene(DBT) in fuel oil can be completely removed over the catalyst at atmospheric pressure and 60℃.The removal rate of DBT can still reach 96% after the catalyst has been used for 6 cycles.

关 键 词：燃油脱硫 x-HPW/TiO_(2)催化剂 大孔-介孔结构 苯并噻吩 催化氧化 

分 类 号：TE624[石油与天然气工程—油气加工工程]