Preparation and Characterization of Mesoporous Ce0.5Zr0.5O2 Mixed Oxide

• 来源期刊: 中国化学(英文版)
• 年，卷（期）: 2007,（10）
• 页码范围: 1499-1502
• 页数: 4页
• 语种: 英文

摘要

Mesoporous (MSU) Ce0.5Zr0.5O2 mixed oxide with a high specific surface area has been synthesized under weak acidic condition in the presence of an anionic surfactant, sodium dodecylbenzenesulfonate. The effect of the pH value on the formation of mesostructure and the thermal stability of the material has been evaluated. The products were characterized by transmission electron microscopy, powder X-ray diffraction and nitrogen adsorption-desorption measurements. The results showed that the as-prepared Ce0.5Zr0.5O2 mixed oxide possessed a specific surface area of 163.3 m2·g-1, which had a cubic fluorite-type structure and possessed specific surface areas of 148.4 and 62.4 m2·g-1 after calcination at 500 and 800 ℃ for 2 h, respectively. The material showed excellent thermal stability.