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采用尿素分解法制备了均分散球形Eu(OH)CO_3·H_2O超细沉淀粒子,进一步在空气中750℃下焙烧4h,得到了均分散球形氧化铕超细微粒.考察了各种反应条件的影响,获得了最佳的制备条件.用XRD,IR,TEM,TG以及比表面测定等手段对样品进行了表征.
The ultrafine spherical Eu (OH) CO_3 · H_2O precipitated particles were prepared by urea decomposition and further calcined in air at 750 ℃ for 4h to obtain the uniformly dispersed spherical europium oxide ultrafine particles. The effects of various reaction conditions were investigated , The best preparation conditions were obtained.The samples were characterized by XRD, IR, TEM, TG and specific surface area.