大孔高比表面积催化剂及其载体的制备方法─超临界流体干燥法

Preparation of macropore catalysts and supports with high specific surface area by supercritical fluid drying

介绍了利用超临界流体干燥法制备高比表面积的大孔一元氧化物，如ＳｉＯ２、Ａｌ２Ｏ３、ＺｒＯ２、ＴｉＯ２和ＭｇＯ等，还可制得均匀的二元、三元及多元氧化物。该法是制备大孔高比表面催化剂及催化剂载体的有效方法。

method of supercritical fluid drying ispresented, by which many kinds of oxideswith large pore volume and high specific surface area, such as SiO2, Al2O3, ZrO2, TiO2,MgO, or mixtures of these oxides, can be prepared. It is suggested that this method is veryuseful for preparing macropore catalysts andsupports of high specific surface area.