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氧化鋯溶膠及其製備方法ZIRCONIA SOL AND METHOD FOR PREPARING THE SAME
專利名稱 氧化鋯溶膠及其製備方法ZIRCONIA SOL AND METHOD FOR PREPARING THE SAME
申請日 (校編號) 2004/03/26  (091023US)
2003/03/27  (091023TW)
專利證書號 7,393,518 美國
I252215 中華民國
專利權人 國立中央大學
發明人 蔣孝澈、陳建偉、楊脩生


技術摘要:
A zirconia sol having zirconia crystals with an average primary particle size less than 20 nm is provided, wherein more than 90% of the zirconia crystals exist in the form of tetragonal and cubic crystal lattice structures. The zirconia sol has a transmittance more than 70% when the amount of the zirconia crystals in the zirconia sol is about 20 wt %. 一種氧化鋯溶膠及其製備方法,其中氧化鋯溶膠係由粒徑平均小於20奈米之一氧化鋯結晶一次粒子所組成,且氧化鋯結晶一次粒子具有超過90%之正方晶相與立方晶相,而當氧化鋯結晶一次粒子的含量為20wt%時,光學穿透率為70%。

解決的問題或達成的功效:
The present invention discloses a method of preparing a zirconia sol comprising providing a first solution containing an inorganic zirconium salt and an organic acid therein. The first solution is mixed with a buffer solution to obtain a sol, wherein the buffer solution contains an organic amine. The sol is then heated, at a lower temperature than previous methods, to obtain a product, and then the product is conditioned to form an acid mud. Thereafter, the acid mud is conditioned to form a neutral zirconia sol. 提供一種氧化鋯溶膠及其製備方法,以獲致不會聚結或僅有弱作用力之結晶性奈米氧化鋯。

應用領域:
This invention relates in general to a metal oxide nanoparticle sol and a method for preparing the same. More particularly, the invention relates to a zirconia nanocrystal sol and a method for preparing the same. 氧化鋯(zirconia)溶膠(sol)及其製備方法。

適用產品:
燃料電池

IPC:
C01G-025/02(2006.01); (IPC 1-7) : C01G-025/02

Claim 1:
1. A method of preparing a zirconia sol, comprising: providing a first solution containing an inorganic zirconium salt and an organic acid therein, wherein the organic acid is propionic acid, acrylic acid, or methacrylic acid; mixing the first solution with a buffer solution containing an organic amine therein for obtaining a sol, wherein the organic amine is trimethanolamine, triethanolamine or tripropanolamine; heating the sol to obtain a product; adjusting the pH of the product to form an acidic slurry, wherein the acidic slurry has a pH value less than 3; and adjusting the pH of the acidic slurry to form a neutral zirconia sol having a pH value between 5.about.10. 1.第二光纖,耦合於該光源光學系統,以接收該第二光源,兩端並需固定於該固定裝置上,而中間則纏繞於該固定裝置上之一第二固定端與該第二纏繞端;以及

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