摘要：以尿素-过氧化氢为混合模板、正硅酸乙酯为硅源，在酸性条件 下，通过溶胶-凝胶过程合成二氧化硅介孔材料。 采用煅烧法除去模板 剂， 用红外光谱、XRD、N2 吸附-脱附、HRTEM 等分析测试手段对介孔 材料的结构和形态进行了表征。 结果表明：与以尿素为单一模板相比， 采用混合模板剂所合成介孔材料为蠕虫状，孔径分布基本保持不变、比 表面积相近（分别为 445、431 m²/g）、孔径（分别为 7.04、8.11 nm）和孔体 积（分别为 0.783、0.874 cm³/g）明显增大。 

关键词：介孔二氧化硅；模板法；溶胶-凝胶

Abstract：The mesoporous silica materials were prepared using urea－H₂O₂as mixt-templates and TEOS as silica source via HCl-catalyzed sol －gel process，followed by removing the pore-forming agents by calcination. The materials were characterized by FT-IR，nitrogen sorption isotherm，powder X -ray diffraction，HRTEM for structure and morpha. The results indicated that the materials prepared using urea －H2O2 as co-templates were amor phous，had almost the same specific surface areas （e.g. 445 m²/g→431 m²/g） and pore size distributions as well as larger pore volumes（e.g. 0.783 cm³/g →0.874 cm³/g） and pore diameter（e.g.7.04 nm→8.11 nm） than the meso porous silica materials prepared using urea as single－template. 

Keywords：mesoporous silica； templates； sol－gel process