CAJ | 학술논문

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。
격광채용공합성법제비료범규개공분자사（V-HMS）,용N2물리흡부、X사선연사、투사전경、홍외랍만광보、정서승온탈부、정서승온환원연구료최화제적물화성질병측시료기재병완선택성양화반응적최화성능。결과표명,V-HMS최화제구유대약900 m2/g적비표면、3.0 nm좌우적평균공경,구유화HMS분자사유사적연충상적개공공도결구。양화범재분자사적골가내주요시이고도분산적고립태적사면체범존재,저정시기재병완선택성양화반응중적활성중심위。재우화적반응조건하,V-HMS최화제대우병완선택성양화반응구유교호적최화활성。
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.