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滞止旋流火焰合成纳米TiO_2颗粒的实验研究 被引量：2

EXPERIMENTAL STUDIES ON TiO_2 NANO-PARTICLES IN A SWIRL-STABILIZED STAGNATION FLAME
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摘要 湍流效应是火焰合成纳米TiO_2颗粒工业化规模放大的一个重要影响因素。本文基于一种新提出的滞止旋流火焰开展了合成TiO_2纳米颗粒的实验研究。在旋流数0.26的条件下,可成功获得比表面积300 m^2/g以上,粒径最小达5nm的锐钛矿型TiO_2颗粒,这可归因于本文滞止旋流火焰具有贫燃稳定性、速度高反应快、温度梯度大等特点。实验还发现,随着前驱物浓度的减小,合成颗粒粒径逐渐减小且更加均匀。 Turbulence effect plays an important role in the scale-up and industrialization of flame synthesis process.In this paper,a swirl-stabilized stagnation flame was specially proposed and developed for the flame synthesis of TiO2 Nano-particles.After experimental researching,the obtained titiania from this process has a diameter of 5nm,BET surface more than 300 m^2/g with dominating anatase crystal due to the high temperature gradient,high flame speed and reaction of this novel flame.The results incidated that,with a smaller precursor loading rate,the particle diameter become smaller and more uniform.
作者 邓斯理 李水清 Stephen D Tse 王俊晶 陶雨洁 姚强
机构地区 清华大学热能工程系热科学与动力工程教育部重点实验室 罗格斯大学机械与航天工程系
出处 《工程热物理学报》 EI CAS CSCD 北大核心 2011年第1期157-160,共4页 Journal of Engineering Thermophysics
基金 国家自然科学基金资助项目(No.50776054) 清华大学基础研究基金资助(No.JC2007014) 国家重点基础研究发展规划项目资助(No.2002CB211600)
关键词 滞止旋流火焰 火焰合成 TIO2纳米颗粒 swirl-stabilized stagnation flame flame synthesis TiO2 nano-particle
分类号 TK16 [动力工程及工程热物理—热能工程]
  • 相关文献

参考文献10

  • 1Schimmoeller B, Schulz H, Pratsinis S E, et al. Ceramic Foams Directly-Coated with Flam-Made TiO2/V2O5 for Synthesis of Phthalic Anhydride [J]. Catalysis, 2006, 243: 82 -92.
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二级参考文献20

  • 1马斌,李水清,蔡子嘉,姚强.弱旋湍流火焰合成纳米二氧化钛的机理研究[J].工程热物理学报,2008,29(8):1423-1426. 被引量：5
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  • 6Bin Zhao, Kei Uchikawa, John R McCormick, et al. Ultrafine anatase TiO2 nanoparticles Produced in Premixed Ethylene Stagnation Flame at 1 atm. Proceedings of the Combustion Institute, 2005, 30:2569-2576.
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  • 8[1]Schimmoeller B,Schulz H,Pratsinis S E,et al,Ceramic Foams Directly-Coated with Flam-Made TiO2/V2O5 for Synthesis of Phthalic Anhydride.J.Catalysis,2006,243:82-92
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共引文献4

同被引文献12

  • 1马斌,李水清,蔡子嘉,姚强.弱旋湍流火焰合成纳米二氧化钛的机理研究[J].工程热物理学报,2008,29(8):1423-1426. 被引量：5
  • 2WANG Junjing, LI Shuiqing, YAN Wen, et al. Synthe- sis of WiO2 Nanoparticles by Premixed Stagnation Swirl Flames [J]. Proceedings of the Combustion Institute, 2010, 33.
  • 3ZHAO Hong, LIU Xiaofei, Tse S D. Control of Nanopar- ticle Size and Agglomeration Through Electric-Field- Enhanced Flame Synthesis [J]. Journal of Nanoparticle Research, 2008, 10(6): 907-923.
  • 4ZHAO B, Uchikawa K, WANG H, et al. Ultrafine Anatase TiO2 Nanoparticles Produced in Premixed Ethylene Stag- nation Flame at 1 arm [J]. Proceedings of the Combustion Institute, 2005, 30:2569-2576.
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二级引证文献4

工程热物理学报
2011年 第1期

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