无机材料学报2011，Vol.26Issue(8)：813-818,6.DOI:10.3724/SP.J.1077.2011.00813
不同制备方法对CeO2-ZrO2-Al2O3材料性能的影响
Effects of Different Preparation Methods on the Properties of CeO2-ZrO2-Al2O3
摘要
Abstract
Oxygen storage material of Ce0.5Zr0.5O2(12wt%)-Al2O3(CZA) was prepared by three different methods of coprecipitation, peptization and peptization-coprecipitation. The structure and physicochemical properties of materials were characterized by X-ray diffraction (XRD), N2 adsorption-desorption, oxygen pulse adsorption (OSC), H2-temperature programmed reduction (TPR) and O2-programmed desorption (O2-TPD). The XRD results demonstrate that all the samples have CeO2-ZrO2 cubic fluorite and y-Al2O3 after calcined at 1000℃. The results according to N2 adsorption-desorption show that the sample prepared by peptization-coprecipitation has higher specific surface area (146.2 m2/g), larger pore volume (0.5 mL/g), and the best distribution of the pore size. The results from OSC and H2-TPR indicate that the sample prepared by peptization-coprecipitation has the best performance of oxygen storage and reduction capacity. At the same time, the influence of different methods on the properties of samples after calcined at 1100℃ are discussed.关键词
铈锆铝复合氧化物/织构性能/储氧性能/还原性能Key words
CeO2-ZrO2-Al2O3/structure properties/oxygen storage capacity/redox property引用本文复制引用
焦毅,唐石云,王健礼,祝清超,陈耀强,龚茂初..不同制备方法对CeO2-ZrO2-Al2O3材料性能的影响[J].无机材料学报,2011,26(8):813-818,6.基金项目
国家自然科学基金重点项目(20773090) （20773090）
