【摘要】 利用Ce(NO3) 3·6H2 O溶液与介孔氧化锆原粉在一定pH值的液相中反应 ,将Ce/CeO2 催化剂移植到多孔氧化锆材料中 .用XRD ,TEM ,N2 吸附 -脱附及UV -VIS吸收光谱等手段对产物进行表征 ,结果表明 :铈经Zr—O—Ce键成功地负载于多孔ZrO2 骨架中 ,并且分散于孔表面及孔道中 ,同时保持孔道的有序性及多孔氧化锆较高的比表面积 .更多还原

【Abstract】 Cerium/ceria had been grafted onto the ordered porous zirconia materials by reacting Ce(NO 3) 3·6H 2O and the calcined mesoporous zirconia under certain pH condition. The X -ray powder diffraction, TEM, nitrogen adsorption and UV-VIS spectroscopy were adopted for the characterization of the synthesized products. It is shown that cerium has been successfully incorporated into the framework of ZrO 2 via Zr—O—Ce bonds. The dispersion of cerium into the pore channels and pore surface of ZrO 2 has also been observed. Furthermore, both the specific surface area and the ordering of pore structure are retained.更多还原