Synthesis and Characterization of Large Surface Area Yttrium Oxide by Precipitation Method
来源期刊：JOURNAL OF RARE EARTHS2004年第6期
论文作者：龙志奇 崔大立 崔梅生 张顺利 黄小卫
Key words：surface area; yttrium oxide; morphology; precipitation method; rare earths;
Abstract: The method for preparing yttrium oxide with large specific surface area was introduced. By means of BET, SEM, TG and DTA analysis, the effects of precipitant, stirring velocity, non-RE impurity in solution, calcination temperature, on the surface area were studied respectively. The Y2O3 sample with specific surface area of more than 60 m2*g-1 and L.O.I less than 1% was prepared in the suitable precipitation condition and calcinations temperature when the ammonia used as precipitant. The SEM shows that the Y2O3 prepared with large surface area is the aggregation of about 50 nm particles.
龙志奇1，崔大立1，崔梅生1，张顺利1，黄小卫1
(1.Grirem Advanced Materials Corporation Limited, General Research Institute for Non-Ferrous Metals, Beijing 100088, China)
Abstract:The method for preparing yttrium oxide with large specific surface area was introduced. By means of BET, SEM, TG and DTA analysis, the effects of precipitant, stirring velocity, non-RE impurity in solution, calcination temperature, on the surface area were studied respectively. The Y2O3 sample with specific surface area of more than 60 m2*g-1 and L.O.I less than 1% was prepared in the suitable precipitation condition and calcinations temperature when the ammonia used as precipitant. The SEM shows that the Y2O3 prepared with large surface area is the aggregation of about 50 nm particles.
Key words:surface area; yttrium oxide; morphology; precipitation method; rare earths;
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