文献类型：期刊文献

中文题名：低温化学气相合成氧化钛超细粒子

英文题名：PRODUCTION OF ULTRAFINE TiO_2 PARTICLESBY VAPOR PHASE HYDROLYSIS OF Ti(OC_4H_9)_4 AT LOWER TEMPERATURE

作者：胡黎明[1];袁渭康[1];陈敏恒[1];张亚莉[2];夏道富[2]

机构：[1]华东化工学院技术化学物理研究所,上海200237;[2]上海轻工研究所,上海200211

年份：1993

卷号：44

期号：2

起止页码：240

中文期刊名：化工学报

外文期刊名：CIESC Journal

收录：CSTPCD;;Scopus;北大核心:【北大核心1992】；CSCD:【CSCD2011_2012】；

基金：国家教委博士点基金;国家自然科学基金资助项目

语种：中文

中文关键词：氧化钛;超细粒子;气相反应;低温

外文关键词：TiO2, ultrafine particles, vapor phase reaction, metal alkoxide hydrolsis

摘要：氧化钛超细粒子具有很高的化学活性、良好的耐侯性和耐化学腐蚀性等，可。良的光催化剂、催化剂载体或吸附剂，也是功能陶瓷、高级油漆及涂料的主要尿合成方法有液相法和气相法。液相法中最有代表性的是金属醇盐水解法［，’］。气。TIC14氧化怯L’】该法原料易得，产品粒度细，单分散性好，但反应温度高且副产品作者将金属醇盐水解反应移植至气相，利用亚微米级的金属醇盐气溶胶同水蒸气。
Metal alkoxide hydrolysis was conducted into a vapor phase reactor. A hot nitro-gen flow in a mixing chamber carrying Ti (OC4H9)4 vapor, was mixed with a cold nitrogen low in a mixing chamber to generate submicron droplets. The droplets were hydrolysed with vater vapor at lower temperature to synthesize TiO2 ultrafine particles of high purity andnarrow size distribution. A mathematical model of perfectly mixed reactors (CSTR) in series was developed which was able to predict mean particle size as a function of operating conditions. Particle size was experimentally and theoretically found dependent on both fluid dynamic and thermodynamic conditions.