物理化学学报 >> 1996, Vol. 12 >> Issue (03): 264-267.doi: 10.3866/PKU.WHXB19960314

研究简报 上一篇    下一篇

稀土添加剂对超细ZrO2织构、结构的影响

刘源,钟炳,彭少逸,吴东,樊彦贞,范文浩   

  1. 中国科学院山西煤炭化学研究所,太原 030001
  • 收稿日期:1995-04-17 修回日期:1995-06-12 发布日期:1996-03-15
  • 通讯作者: 刘源

Influence of Y or Ce Additive on the Texture and Structure of Ultra-fine ZrO2

Liu Yuan,Zhong Bing,Peng Shao-Yi,Wu Dong,Fan Yan-Zhen,Fan Wen-Hao   

  1. Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan 030001
  • Received:1995-04-17 Revised:1995-06-12 Published:1996-03-15
  • Contact: Liu Yuan

关键词: ZrO2, 超临界干燥, 织构, 超细粒子

Abstract:

Pure zirconia and zirconia containing Y or Ce were prepared by Supercritical Drying Method (SCD) followed by calcination in air at temperature up to 700℃. It was found that the zirconia containing Y or Ce possessed much higher specific surface area and larger pore volume than that of pure zirconia. The BET surface area of 3.4Y2O3-96.6ZrO2 without calcination and that calcined at 700℃ were 376.2 m2﹒g-1 and 80.0 m2﹒g-1 respectively, while the corresponding values of pure zirconia were 248.0 m2 ﹒g-1 and 47.8 m2﹒g-1 respectively. It was postulated that the better textural properties of zirconia containing Y or Ce were resulted from preventing zirconia particles sintering in the presence of Y or Ce additive. All of these samples made by SCD had a well-developed mesoporous texture.

Key words: ZrO2, Supercritical drying, Texture, Ultra-fine particle