Polymerized Complex Route to Synthesis of Pure Y2Ti2O7 at 750°C Using Yttrium-Titanium Mixed-Metal Citric Acid Complex
作者： Masato Kakihana , Maria M. Milanova , Momoko Arima , Toru Okubo , Masatomo Yashima
DOI: 10.1111/J.1151-2916.1996.TB08781.X
关键词:
摘要: A polymerized complex technique was used to prepare high-purity pyrochlore Y{sub 2}Ti{sub 2}O{sub 7} powders at 750 C. Heating of a mixed solution citric acid (CA), ethylene glycol (EG), and yttrium titanium ions, with molar ratio Ca:EG:Y:Ti = 5:20:1:1, 130 C produced yellowish transparent polymeric gel without any precipitation; this material subsequently as precursor for 7}. Based on the results {sup 13}C-NMR spectroscopy, it suggested that mixed-metal (Y,Ti)-CA{sub 3} chelate formed in starting CA/EG solution. The formation pure occurred when heat-treated furnace set static air 4 h.
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