A New Combustion Process for Nanosized BaCe0.95Y0.05O3-δ Powders
来源期刊：JOURNAL OF RARE EARTHS2004年第5期
论文作者：杨乃涛 张宝砚 谭小耀 孟波
Key words：inorganic nonmetallic materials; nanosized powder; perovskite-type oxides; BaCe0.95Y0.05O3-δ; combustion synthesis; rare earths;
Abstract: Nanosized BaCe0.95Y0.05O3-δ powders with the homogeneous composition were synthesized by a new combustion process based on the Pechini method.A polymeric precursor sol was formed by use of citric acid and ethylene glycol as the chelating agents of metal ions.The perovskite-type BaCe0.95Y0.05O3-δ powders with uniform shape and smaller than 40 nm in sized were obtained through the combustion of the polymeric precursor sol at the existence of nitric acid and ammonium hydroxide.It was found the particle size could be controlled by modulating the quantities of nitric acid and ammonium hydroxide,the quantities of the residue,carbonate ions were also affected by the quantities of the citric acid and ethylene glycol.
杨乃涛1，张宝砚2，谭小耀1，孟波2
(1.College of Chemical Engineering and Technology,Shandong University of Technology,Zibo 255049,China;
2.College of Science,Northeastern University,Shenyang 110004,China)
Abstract:Nanosized BaCe0.95Y0.05O3-δ powders with the homogeneous composition were synthesized by a new combustion process based on the Pechini method.A polymeric precursor sol was formed by use of citric acid and ethylene glycol as the chelating agents of metal ions.The perovskite-type BaCe0.95Y0.05O3-δ powders with uniform shape and smaller than 40 nm in sized were obtained through the combustion of the polymeric precursor sol at the existence of nitric acid and ammonium hydroxide.It was found the particle size could be controlled by modulating the quantities of nitric acid and ammonium hydroxide,the quantities of the residue,carbonate ions were also affected by the quantities of the citric acid and ethylene glycol.
Key words:inorganic nonmetallic materials; nanosized powder; perovskite-type oxides; BaCe0.95Y0.05O3-δ; combustion synthesis; rare earths;
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