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采用溶胶-凝胶法,在氨性条件下合成出高钒掺杂量介孔MCM-41。以XRD,氮气吸附/脱附,透射电镜,ICP和拉曼光谱等技术对材料的结构进行了表征。结果表明当钒硅物质的量的比达到0.14时材料仍保持规整介孔结构(尽管当钒/硅物质的量的比超过0.11时开始有V2O5晶体出现)。所合成材料室温下在苯的过氧化氢直接羟基化反应中表现出良好的催化性能。
Mesoporous MCM-41 with high vanadium content was synthesized by sol-gel method under ammoniacal conditions. The structure of the material was characterized by XRD, nitrogen adsorption / desorption, transmission electron microscopy, ICP and Raman spectroscopy. The results show that the material still retains a regular mesoporous structure when the amount ratio of the vanadium silicon material reaches 0.14 (although V2O5 crystals start to appear when the amount ratio of vanadium / silicon substance exceeds 0.11). The synthesized material showed good catalytic performance in the direct hydrogenation of benzene over hydrogen at room temperature.