表面修饰钴的SiO_2复合体制备及应用

Preparation and Application of Modified SiO_2 Composite

以高比表面多孔型SiO2（比表面大于1000m2／g）为载体，用等体积浸渍法制得表面修饰钴的SiO2复合体．经XRD、电子能谱、TEM检测发现表面修饰组分钴在SiO2表面均匀担载，且复合体在丙烯还原一氧化氮的反应中表现出良好的催化活性．

Modified SiO2 composites were synthesized from porous SiO2 with a high surface area above 1 000 m2/g by means of impregnating method. X-ray diffraction, electronic energy spectrum, TEM analysis were used to study the structure of the composites. It was found that active phase Co had been distributed homogeneously on porous SiO2. Furthermore, the composites show a better activity In the catalytic reaction between C3H6 and NO.