| 真空冷冻干燥制备TiO2粉体 |
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| 引用本文： | 卢毅祥,;苗蕾,;周建华,;许家友.真空冷冻干燥制备TiO2粉体[J].广东化工,2014(17):5-7. |
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| 作者姓名： | 卢毅祥 ;苗蕾 ;周建华 ;许家友 |
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| 作者单位： | [1]广州大学化学化工学院,广东广州510006; [2]中国科学院广州能源研究所,中国科学院可再生能源与天然气水合物重点实验,广东广州510640 |
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| 摘 要： | 异丙醇钛为钛源,采用溶胶-凝胶法合成TiO2湿凝胶,以真空冷冻干燥方法干燥处理,得到纳米TiO2冻干胶,并用X-射线衍射(XRD)、扫描电镜(SEM)、BET氮气吸附脱附法、TG-DSC综合热分析仪、激光纳米粒度仪对样品表征,制备的TiO2冻干胶中比表面积最大为301.47 m2/g,其总孔容与平均孔径分别为0.189 cm3/g、2.503 nm。
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| 关 键 词： | 溶胶-凝胶法 真空冷冻干燥 TiO2 |
Vacuum Freeze-Drying Preparation of TiO2 Powders |
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| Lu Yixiang;Miao Lei;Zhou Jianghua;Xu Jiayou.Vacuum Freeze-Drying Preparation of TiO2 Powders[J].Guangdong Chemical Industry,2014(17):5-7. |
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| Authors: | Lu Yixiang;Miao Lei;Zhou Jianghua;Xu Jiayou |
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| Affiliation: | Lu Yixiang , Miao Lei, Zhou Jianghua, Xu Jiayou ( 1. School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006; 2. Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China) |
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| Abstract: | In the present study, a novel vacuum freeze-drying was utilized to prepare the TiO2 cryogels. The wet gels were synthesized via acid catalysis and acid-base catalysis using isopropyl titanate （TTIP） as a titanium precursor and tert butyl alcohol as a solvent. After vacuum fi＇eeze drying, nanoporous TiO2 cryogels were characterized using Scanning Electron Microscopy （SEM）, nitrogen absorption/desorption isotherms, X-ray Diffraction（XRD）, TG-DSC thermal analysis and laser particle size analyzer. The sample maximum BET is 301.47 m2/g, the total pore volume and average pore size of0.189 cm3/g, 2.503 nm. |
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| Keywords: | sol-gel vacuum freeze drying TiO2 |
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