Obtaining of Mesoporous Zirconia Nanopowders

摘要：

　　Highly crystallized ultradispersed meso porous zirconia powders were obtained using the mono ethanolamine and tetraethylammonium hydroxide to stabilize the sols.Zirconia pore size was 3-4 nm, and its specific surface area was 55-80 m2/g.The crystallite size of the powders was 6-12 nm.Impact of the zirconi um source nature on zirconia dispersibility and its phase purity was found.100% Tetragonal zirconia was ob tained using zirconyl nitrate and calcination at 500℃.Under exactly the same temperature conditions and the use of zirconyl chloride allowed to obtained 100% tetra gonal zirconia only when the molar ratio values of mo noethanolamine/Zr was equal to 0.5, or tetraethylam monium hydroxide/Zr was equal to 1.0.It was found that the phase separation and the formation of both tet ragonal and monoclinic zirconia occurred at any chan ges of these parameters of synthesis Zr-containing gel intermediate.

关键词： tetragonal zirconia ultradispersed powders modified sol-gel technique

作者: E.A.Trusova A.A.Khrushcheva

作者单位: A.A.Baikov Institute of Metallurgy and Material Science RAS,119991 Moscow,Leninskii prospect,49

会议类型: 国际会议

会议名称: The 12th China-Russia Symposium on Advanced Materials and Technologies(第十二届中俄双边新材料新工艺国际会议)

会议地点: 昆明

会议语种:英文

页码: 80-83

在线出版日期: 2013-11-19（万方平台首次上网日期，不代表论文的发表时间）