双溶剂浸渍法制备VO_x/MCF催化剂及丙烷选择氧化  

VO_x/MCF Catalysts Prepared by Two-solvents Impregnation and Application in the Selective Oxidation of Propane

作　　者：裴素朋[1] 周义峰[1] 岳斌[2] 钱林平[2] 叶林[2] 贺鹤勇[2] 

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 [2]复旦大学化学系,上海200433

出　　处：《分子催化》2012年第2期127-134,共8页Journal of Molecular Catalysis(China)

基　　金：国家重点基础研究发展计划(2009CB623506);上海市自然科学基金(11ZR1435700);上海应用技术学院引进人才科研启动基金(YJ2011-44)

摘　　要：采用双溶剂法制备了负载型氧化钒类催化剂(VOx/MCF),N2物理吸附、X射线衍射、透射电镜、拉曼光谱、程序升温脱附、程序升温还原等系统研究了催化剂的物化性质并测试了其在丙烷选择氧化反应中的催化性能.结果表明,由双溶剂法制备的VOx/MCF催化剂具有较好的催化活性,且在氧化钒负载量基本一致的前提下,双溶剂法制备的VOx/MCF催化剂比普通浸渍法制备的VOx/MCF具有更高的催化活性,这与双溶剂法的制备过程可以使得钒物种尽可能进入载体内表面,有利于氧化钒的较好分散有关,而高度分散的氧化钒物种,正是丙烷选择氧化反应的活性中心.VOx/MCF catalysts were prepared by two-solvents impregnation method and characterized using N2 physics adsorption,X-ray diffraction（XRD）,transmission electron microscopy（TEM）,raman spectroscopy（Raman Spectroscopy）,temperature-programmed desorption（TPD）,temperature-programmed reduction（TPR）.And also,the catalytic performances of catalysts were tested for selective oxidation of propane.It was showed that VOx/MCF catalysts prepared by two-solvents method had good catalytic activity.Compared with the catalyst prepared by general impregnation,the catalyst prepared by two-solvents method showed better catalytic performance.It may be conduced to the better dispersion of vanadium oxide of the catalyst prepared by two-solvents method,whereas the highly dispersed vanadium state are the active positions of reaction of selective oxidation of propane

关 键 词：双溶剂 VOx/MCF 高分散 丙烷 选择性氧化 

分 类 号：O643.32[理学—物理化学]