SYNTHESIS OF NANOSIZED TiO_2-Al_2O_3 COMPOSITE PARTICLES   BY TiCl_4-AlCl_3-O_2 HIGH TEMPERATURE REACTION

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SYNTHESIS OF NANOSIZED TiO_2-Al_2O_3 COMPOSITE PARTICLES BY TiCl_4-AlCl_3-O_2 HIGH TEMPERATURE REACTION

Online:2000-12-25 Published:2000-12-25

TiCl_4-AlCl_3-O_2高温反应合成TiO_2-Al_2O_3纳米复合颗粒

施利毅,李春忠,古宏晨,房鼎业,朱以华,陈爱平

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

Abstract

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.

CLC Number:

TB383

Shi Liyi 1** ,Li Chunzhong 1, Gu Hongchen 1, Fang Dingye 2,Zhu Yihua 1,and Chen Aiping 1, ( 1 Institute of Technical Chemical Physics, 2 Department of Chemical Engineering, East China University of Science and Technology,Shanghai. SYNTHESIS OF NANOSIZED TiO_2-Al_2O_3 COMPOSITE PARTICLES BY TiCl_4-AlCl_3-O_2 HIGH TEMPERATURE REACTION[J]. .

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]. CIESC Journal.

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