| Sol-Gel法制备超细TiO_2粉体条件的研究 |
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| 引用本文： | 刘公召,隋智通.Sol-Gel法制备超细TiO_2粉体条件的研究[J].化学世界,2002,43(6):293-295,306. |
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| 作者姓名： | 刘公召 隋智通 |
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| 作者单位： | 1. 东北大学材料与冶金学院,辽宁,沈阳,110006;沈阳化工学院化工系,辽宁,沈阳,110021
2. 沈阳化工学院化工系,辽宁,沈阳,110021 |
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| 摘 要： | 通过红外光谱图分析 ,研究了溶胶 -凝胶法制备超细 Ti O2 过程发生的化学物理变化 ,并确定了超细 Ti O2 的生成条件。实验结果表明 :乙醇及水与钛酸丁酯的摩尔比分别为 ( 3～ 9)∶ 1和 ( 2 4～ 2 5 )∶ 1时 ,才能生成稳定的湿凝胶 ;在 5 0～ 60°C,5 .3～ 8.0 k Pa条件下 ,真空干燥 2 4 h,湿凝胶可以转化为干凝胶 ;干凝胶在 5 1 0～ 90 0°C及大于 90 0°C下焙烧 ,分别能得到锐钛矿型和金红石型超细 Ti O2 粉体
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| 关 键 词： | 溶胶-凝胶法 制备条件 二氧化钛 超细粉体 |
| 文章编号： | 0367-6358(2002)06-0293-04 |
Study on the Preparation Conditions of Ultrafine TiO2 Powder by Sol-Gel Method |
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| LIU Gong zhao ,SUI Zhi tong.Study on the Preparation Conditions of Ultrafine TiO2 Powder by Sol-Gel Method[J].Chemical World,2002,43(6):293-295,306. |
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| Authors: | LIU Gong zhao SUI Zhi tong |
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| Affiliation: | LIU Gong zhao 1,2,SUI Zhi tong 2 |
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| Abstract: | The chemical and physical changes taking place in preparing ultrafine TiO 2 powder were studied by means of IR spectroscopy. The formation conditions of ultrafine TiO 2 powder were investigated. Experimental results indicated that stable wet gel can be obtained when the mole ratios of alcohol or water to tetrabutyl titanate were (3~9)∶1 and (24~51)∶1 respectively. The wet gel can be changed into dry gel if the vacuum drying time was over 24 h at 50~60 °C and 5.3~8.0 kPa. Anatase or rutile TiO 2 powder can be prepared when calcining the dry gel at 510~900 °C and over 900 °C respectively. |
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| Keywords: | sol gel method preparation conditions titania ultrafine powder |
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