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化学学报
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化学学报 ›› 2005, Vol. 63 ›› Issue (3): 249-253. 上一篇    

研究论文

纳米Pb(II)-没食子酸配合物的合成及其燃烧催化性能

洪伟良*,1，刘剑洪1，赵凤起2，李玉梅1，罗仲宽1，田德余1，张培新1   

  1. (1深圳大学师范学院化学与生物系 深圳 518060)
    (2西安近代化学研究所 西安 710065)
  • 投稿日期:2004-03-12 修回日期:2004-10-12 发布日期:2010-12-10
  • 通讯作者: 洪伟良

Synthesis and Combustion Catalytic Activity of Nanoparticle Pb(II)-gallate Complex

HONG Wei-Liang*,1,LIU Jian-Hong 1,ZHAO Feng-Qi 2,LI Yu-Mei 1,LUO Zhong-Kuan 1,TIAN De-Yu 1,ZHANG Pei-Xin 1   

  1. (1 Department of Chemistry and Biology, Normal College, Shenzhen University, Shenzhen 518060)
    (2 Xi'an Modern Chemistry Research Institute, Xi'an 710065)
  • Received:2004-03-12 Revised:2004-10-12 Published:2010-12-10
  • Contact: HONG Wei-Liang

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被引次数

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采用液相分散沉淀法制备了纳米Pb(II)-没食子酸配合物粉体. 用热重分析(TG)、X射线衍射仪(XRD)、透射电镜(TEM)、核磁共振仪(1H NMR)、红外光谱仪(IR)、激光散射粒径分析仪和元素分析仪对样品的物相、形貌、粒径和组成进行了表征. 研究了没食子酸的浓度和分散剂用量对产物的粒子大小的影响. 并测试了产物对推进剂燃烧的催化作用. 结果表明: 产物的平均粒径约为30 nm. 没食子酸的浓度降低和分散剂用量增加均使产物的粒子减小. 产物能明显改善推进剂的燃烧性能, 使推进剂的燃速提高88%, 压强指数降低了70%.

关键词: 纳米粒子, 铅盐, 没食子酸, 分散沉淀法, 配合物, 燃烧催化剂

The nanoparticle Pb(II)-gallate complex was synthesized by liquid dispersion deposition method. The influence of concentrations of precipitant and amount of dispersant (PEG-200) on the particle size of the complex was studied. The Pb(II)-gallate complex was characterized with TEM, XRD, TG, 1H NMR and IR. The composition of the complex was determined by chemical method and elemental analysis. The catalytic performance of nanoparticle complex on the combustion of RDX-CMDB propellant was investigated. The results showed that the average particle size of complex was about 30 nm. The particle size of complexes increased with increasing concentrations of precipitant and decreasing amount of dispersant. The nanoparticle complex Pb(II)-gallate can enhance burning-rate of propellant by 88%, and lower the pressure exponent by 70%.

Key words: nanoparticle, lead salt, gallic acid, dispersion deposition method, complex, combustion catalyst