| TiCl_4-AlCl_3-O_2高温反应合成TiO_2-Al_2O_3纳米复合颗粒 |
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| 引用本文： | 施利毅,李春忠,古宏晨,房鼎业,朱以华,陈爱平.TiCl_4-AlCl_3-O_2高温反应合成TiO_2-Al_2O_3纳米复合颗粒[J].化工学报,2000,51(6):818-822. |
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| 作者姓名： | 施利毅 李春忠 古宏晨 房鼎业 朱以华 陈爱平 |
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| 作者单位： | 华东理工大学技术化学物理研究所!上海200237,华东理工大学技术化学物理研究所!上海200237,华东理工大学技术化学物理研究所!上海200237,华东理工大学化工系!上海200237,华东理工大学技术化学物理研究所!上海200237,华东理工大学技术化学物理研究所!上海200237 |
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| 基金项目： | 国家自然科学基金!(No .2 95 0 6 0 45 )，国家计委九五攻关!(No .96 -5 5 4-0 2 )资助项目 |
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| 摘 要： | 引 言纳米粉体制备是获得纳米陶瓷的重要前提1] .ＴｉＯ2 和Ａｌ2 Ｏ3 复合陶瓷热膨胀系数小、熔点高、抗震性好 ,是很有发展前途的高温结构材料2 ] .通常采用球磨法3] 实现ＴｉＯ2 和Ａｌ2 Ｏ3 粉共混 ,但往往得不到微观均匀混合的纳米粉体 .Ｗｏｉｇｎｉｅｒ等4 ] 采用醇盐共水解Ｓｏｌ -Ｇｅｌ法 ,成本高、反应时间长 ;Ｏｋｕｍｕｒａ等5] 利用烷氧基钛水解反应在Ａｌ2 Ｏ3颗粒表面包覆ＴｉＯ2 ,该法均匀性差 ,且需严格控制原料滴加速度、反应时间较长 .气相反应法快速高效 ,能直接获得金属氧化物晶体 ,产物纯度较高 ,已用于制备Ｔ…
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| 关 键 词： | 复合颗粒 纳米颗粒 高温反应 三氧化二铁 二氧化钛 合成 |
SYNTHESIS OF NANOSIZED TiO_2-Al_2O_3 COMPOSITE PARTICLES BY TiCl_4-AlCl_3-O_2 HIGH TEMPERATURE REACTION |
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| Shi Liyi ,Li Chunzhong ,Gu Hongchen ,Fang Dingye ,Zhu Yihua ,and Chen Aiping.SYNTHESIS OF NANOSIZED TiO_2-Al_2O_3 COMPOSITE PARTICLES BY TiCl_4-AlCl_3-O_2 HIGH TEMPERATURE REACTION[J].Journal of Chemical Industry and Engineering(China),2000,51(6):818-822. |
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| Authors: | Shi Liyi Li Chunzhong Gu Hongchen Fang Dingye Zhu Yihua and Chen Aiping |
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| Affiliation: | Shi Liyi 1**,Li Chunzhong 1,Gu Hongchen 1,Fang Dingye 2,Zhu Yihua 1,and Chen Aiping 1, |
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| Abstract: | Nanosized TiO 2-Al 2O 3 composite particles were prepared by gas-phase oxidation of TiCl 4 and AlCl 3 in an aerosol reactor. XPS, ICP, TEM, and XRD measurement were used to characterize the chemical composition, morphology, size and crystal structure of the particles. The effect of processing parameters on the characteristics of composite particles was studied. The results showed that the enhancement of nitrogen flow rate into the reactor tail benefited particle size control. The TiO 2 size increased with increasing reaction temperature and residence time. The crystal structure of titania and alumina in composite particles was affected by the AlCl 3 and TiCl 4 feed ratio. Aluminum titanate was formed at 1.73 s residence time, 1400 ℃ reaction temperature, and 2.80 AlCl 3/TiCl 4 feed ratio. |
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| Keywords: | composite particle nanosized particles aerosol high temperature reactD |
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