摘要：本文讨论了多孔超细粒子制备中的关键因素一干燥的影响。超临界流体和低温冷冻干燥,是两种有效

消除表面张力的方法,能够保证超细粒子的多孔结构不被破坏。对这两种制备过程及影响因素进行了讨论。

关键词：超临界流体干燥；低温玲冻干燥；多孔超细粒子

Abstract：It is important for porous ultrafine particle to be dried in the preparation, the supercriti-

cal fluid and the frozen drying are the two methods to eliminate the surface tension, the

sketch of the porous utrafine has been kept. The process and influence factors of two meth-

ods have been studied.

KeyWords：Superoritical drying；frozen drying；porous ultrafine particle