Abstract: Using lauric acid and dodecylamine as template, Ti(SO4)2 and NH4VO3 as metal source, a kind of vanadium-titanium mixed oxides mesoporous material with various V/Ti molar ratios was first synthesized in sol-gel method. And then the final product was obtained, after being calcinated, and characterized by XRD and BET. The results indicated that the material is of mesoporous structure. Part of the vanadium incorporated into the material structure, while the rest might remain at the surface of mesoporous pores in the form of V2O5, n(V)/n(Ti) reaching 0.43. Then with the increase of n(V)/n(Ti) the pore diameter increase while the uniformity of the structure decreased. The material exhibited a good catalytic activity in the reaction of benzene hydroxylation.

Key words: V-Ti mixed oxides , Mesoporous materia ,  Benzene hydroxylation , Catalysis

摘要： 以月桂酸和十二胺为模板剂,硫酸钛和偏钒酸铵为金属源,通过溶胶-凝胶法合成,经过焙烧得到一
系列不同钒/钛物质的量比的钒-钛二元氧化物介孔材料。采用XRD、BET等多种手段对介孔材料进行了表征。结
果表明,所制备的V-Ti-O 为介孔结构;有部分的金属钒进入了介孔的骨架中,其余可能以V2O5形式存在于介孔
的表面,n(V)/n(Ti)可达0.43;随着n(V)/n(Ti)增加,孔径增大,但介孔的规整度降低。所合成的材料在苯的羟基
化反应中表现出良好的催化活性。

关键词: 钒-钛二元氧化物 , 介孔材料 , 苯羟基化 , 催化