| 高纯,超细SrTiO3中钛锶比的测定 |
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| 引用本文： | 张丽君 周祝敏. 高纯,超细SrTiO3中钛锶比的测定[J]. 硅酸盐通报, 1996, 15(1): 64-69 |
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| 作者姓名： | 张丽君 周祝敏 |
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| 作者单位： | 南京化工大学 |
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| 摘 要： | 将化学沉淀法制备的ＳｒＴｉＯ３溶于硫酸，加入有Ｈ２Ｏ２存在的４０％乙醇溶液中，加入过量ＥＤＴＡ标准溶液，ＴｉＯ＾２＋形成Ｔｉ－Ｈ２Ｏ２－ＥＤＴＡ络合物，Ｓｒ＾２＋沉淀为ＳｒＳＯ４。钛、锶分离后，用重法测定锶的含量，用Ｃｕ＾２＋离子标准溶液回滴过量ＥＤＴＡ，测定钛的含量。
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| 关 键 词： | 钛酸锶 钛锶比 重量分析法 络合滴定 陶瓷 原料 |
Determination of Titanium-to-Strontium Ratio in High Grade SrTiO 3 Powder |
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| Zhang Lijun Zhou Zhumin. Determination of Titanium-to-Strontium Ratio in High Grade SrTiO 3 Powder[J]. Bulletin of the Chinese Ceramic Society, 1996, 15(1): 64-69 |
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| Authors: | Zhang Lijun Zhou Zhumin |
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| Affiliation: | Nanjing Instiute of Chemical Technolog |
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| Abstract: | SrTiO 3 prepared by chemical coprecipitation and dissolved in sulfuric acid is mixed with 40% ethanol solution containing H 2O 2. With addition of excess EDTA, TiO 2+ forms Ti-H 2O 2-EDTA complex and Sr 2+ is precipitated into SrSO 4. After the separation of titanium and strontium, gravimetric method is used to determine the content of strontium and standardized solution of Cu 2+ ions is used for back titration of excess EDTA to determine the content of titanium. |
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| Keywords: | SrTiO 3 titanium to strontium ratio gravimetry complexometry |
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