采用烘箱干燥、乙醇脱水－烘箱干燥及乙醇脱水－超临界流体干燥三种工艺对共沉淀制备的ＣａＯ－ＺｒＯ２复合水凝胶进行脱水处理，考察了干燥工艺对产品粉体性能的影响。结果表明，有机溶剂置换－超临界流体干燥法制备的粉体比表面积和比孔体积都比较大，粒径较小且分布均匀，作为陶瓷及催化材料性能明显优于其他两种方法制备的粉体 The CaO-ZrO2 composite hydrogels prepared by coprecipitation were dehydrated by oven drying, ethanol dehydration-oven drying and ethanol dehydration-supercritical fluid drying. The effects of drying process on the properties of the powders were investigated. The results show that the organic solvent displacement - supercritical fluid drying powder prepared than the larger than the specific surface area and pore volume, smaller size and uniform distribution, as the ceramic and catalytic materials were significantly better than the performance of the other two prepared powder body