He J.,Kunming Sino Platium Metals Catalysts Co. |
He J.,Dali University |
Zhu J.,Kunming Sino Platium Metals Catalysts Co. |
Guo J.,Kunming Sino Platium Metals Catalysts Co. |
And 2 more authors.
Zhongguo Xitu Xuebao/Journal of the Chinese Rare Earth Society | Year: 2014
The Ce0.6Zr0.3Pr0.1O2 nanocomposites were prepared by co-precipitation (CP) and fractional precipitation (FP) at room temperature, and the co-precipitaion and fractional precipitation with hydrothermal treatment (CP-HT and FP-HT). The results of X-ray diffraction (XRD), N2 physical adsorption, transmission electron microscopy (TEM), H2 temperature-programmed reduction (H2-TPR) and thermogravimetric (TG) analyzer showed that the preparation method of FP-HT can promote the penetration of Zr4+ and Pr3+ into CeO2 crystal lattice, and it was good for enhancing the thermal stability, redox property and oxygen storage capacity of Ce0.6Zr0.3Pr0.1O2 nanocomposite. Although no surfactant was added during the preparation process, the grain size of Ce0.6Zr0.3Pr0.1O2 nanocomposite was well controlled between 8~15 nm, the surface area could keep at 66 m2·g-1, and the amount of oxygen release could maintain 1713 μmol[O]·g-1 CeO2 after calcination at 1000℃ for 4 h. ©, 2014, Chinese Rare Earth Society. All right reserved.