V-HMS的合成、表征及丙烷选择氧化  

Synthesis and Characterization of V-HMS Employed for Selective Oxidation of Propane

作　　者：裴素朋[1] 

机构地区：[1]上海应用技术学院化学与环境工程学院,上海200235

出　　处：《上海应用技术学院学报（自然科学版）》2011年第2期116-122,共7页Journal of Shanghai Institute of Technology: Natural Science

基　　金：上海应用技术学院引进人才基金(YJ2011-44)

摘　　要：激光采用共合成法制备了钒硅介孔分子筛(V-HMS),用N2物理吸附、X射线衍射、透射电镜、红外拉曼光谱、程序升温脱附、程序升温还原研究了催化剂的物化性质并测试了其在丙烷选择性氧化反应的催化性能。结果表明,V-HMS催化剂具有大约900 m2/g的比表面、3.0 nm左右的平均孔径,具有和HMS分子筛类似的蠕虫状的介孔孔道结构。氧化钒在分子筛的骨架内主要是以高度分散的孤立态的四面体钒存在,这正是其在丙烷选择性氧化反应中的活性中心位。在优化的反应条件下,V-HMS催化剂对于丙烷选择性氧化反应具有较好的催化活性。V-HMS catalysts were prepared by co-synthesis method and characterized by using N2 physics absorption,X-ray diffraction（XRD）,transmission electron microscopy（TEM）,infrared and Raman spectroscopy,temperature-programmed desorption（TPD）,and temperature-programmed reduction（TPR）.And also,the catalytic performances of catalysts were tested for selective oxidation of propane.The BET surface and pore size of the samples prepared are around 900 m2/g and 3.0 nm.And the structure of V-HMS catalysts is similar to that of the HMS with worm-like arrangement.The vanadium species are highly dispersed mainly in a tetrahedral environment,which are the active positions of reaction of selective oxidation of propane.The better catalytic performances of V-HMS are achieved on the optimized reaction conditions.

关 键 词：共合成 V-HMS 高分散 丙烷选择性氧化 

分 类 号：O643.36[理学—物理化学]