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液相混合法合成Ba₂Ti₉O₂₀研究

Preparation of Ba₂Ti₉O₂₀ Via the Liquid Mixing Method

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【Author】 HE Yan-Yan1, TANG Xia-Hui1 , ZHOU Yi1 , ZENG Chun-Lian2 (1. The State Key Luboratory of Laser Technology Huazhong University of Science and Technology, Wuhan 430074, China; 2. Institute of Polymer Science, Zhongshan University, Guangzhou 510275, China)

【机构】华中理工大学激光技术国家重点实验室；中山大学高分子研究所武汉430074；武汉430074；广州510275；

【摘要】以ＥＤＴＡ为络合剂，乙二醇为酯化剂，利用液相混合法，合成了单相的Ｂａ２Ｔｉ９Ｏ２０利用ＤＴＡ、ＴＧ、ＸＲＤ和Ｒａｍａｎ光谱等技术表征了树脂中间体和由此得到的氧化物粉末．Ｂａ２Ｔｉ９Ｏ２０相在１０００℃开始出现，在１１００℃变成主相．在１２００℃可得到单相的ＢａＴｉ9Ｏ20.该方法简单易行，不需要低温条件或保护性气氛，也不需要长时间热处理．更多还原

【Abstract】 The liquid mixing method by using ethylenediaminetetraacetic acid as a chelating agent to prepare Ba2Ti9O20 was reported. The resin precursors were prepared and heated at 700℃ to 1200℃ in air. XRD was used to determine the phase transformations as a function of temperature. Single-phase Ba2Ti9O20 was obtained at l200℃, without the prolonged heat treatment time. DTA, TG and Raman spectra were used to characterize the precursors and derived oxide powders, respectively更多还原