三维有序大孔CuO-CeO_2催化剂的制备、表征及其CO催化氧化性能

The preparation and characterization of three-dimensional macroporous CuO-CeO_2 catalysts and their catalytic activities for CO oxidation

以聚甲基丙烯酸甲酯(PMMA)为硬模板制备了一系列具有三维有序大孔(3DOM)结构的Cu O-CeO_2催化剂,考察了CuO负载量和三维立体结构对CuO-CeO_2催化剂CO催化氧化性能的影响.结果表明,催化剂20CuO-CeO_2-S的催化活性最好,且明显优于等体积浸渍法制备的催化剂.这可能是由于三维有序大孔结构催化剂中CuO能更好地分散所致.

Three-dimensionally ordered macroporous CuO-CeO2 catalysts were prepared by using polymethyl methacrylate （ PMMA） as a hardtemplate. The effect of CuO loading and the 3DOM structure on CO oxidation activity were investigated. The results showed that the 20CuO-CeO2-S had the best catalytic activity. Moreover the catalytic activity was better than the catalyst prepared by using incipient-wetness impregnation meth- oil. ihis might be due to the better dispersion of CuO on CuO-CeO2-S catalysts.