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Ce_(0.6)Zr_(0.4)O_2 solid solution ultrafine particle was prepared in the cyclohexane/water/OP-10/n-hexanol reversed microemulsion. The quasi-ternary phase diagram investigations showed that the system has narrow W/O type microemulison region, so it is the proper system to prepare Ce_(0.6)Zr_(0.4)O_2 solid solution ultrafine particle. Some physical-chemical techniques such as TG/DTA, XRD, BET, and HRTEM are used to characterize the resultant powders. The results show that the fluorite cubic Ce_(0.6)Zr_(0.4)O_2 solid solution is obtained at 400 ℃. The surface area is (146.7 m~2·g~(-1)), which is higher than the surface area for sol-gel prepared sample (59.5 m~2·g~(-1)). HRTEM images indicated that the Ce_(0.6)Zr_(0.4)O_2 solid solution ultrafine particle is well-crystallized, narrow size distribution, less agglomeration, within mean size of 5～7 nm.
Ce_ (0.6) Zr_ (0.4) O_2 solid solution ultrafine particle was prepared in the cyclohexane / water / OP-10 / n-hexanol reversed microemulsions. The quasi-ternary phase diagram investigations showed that the system has narrow W / O type microemulsions region , so it is the proper system to prepare Ce_ (0.6) Zr_ (0.4) O_2 solid solution ultrafine particle. Some physical-chemical techniques such as TG / DTA, XRD, BET, and HRTEM are used to characterize the resultant powders. show that the fluorite cubic Ce 0.6 Zr 0.4 O 2 solid solution is obtained at 400 ° C. The surface area is 146.7 m -2 · g -1 which is higher than the surface area for sol- (59.5 m ~ 2 · g -1) HRTEM images indicated that the Ce 0.6 Zr 0.4 O 2 solid solution ultrafine particle is well-crystallized, narrow size distribution, less agglomeration, within mean size of 5 ~ 7 nm.