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无机材料学报

无机材料学报

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纳米BaTiO3的制备及其负载Ni基催化剂的应用研究

黎先财; 罗来涛; 刘康强   

  1. 南昌大学化学与材料科学学院 南昌 330047
  • 收稿日期:2002-04-02 修回日期:2002-06-03 出版日期:2003-05-20 网络出版日期:2003-05-20

Preparation of Nanometer BaTiO3 and Application of Nanometer BaTiO3-supported Ni Based Catalyst

LI Xian-Cai; LUO Lai-Tao; LIU Kang-Qiang   

  1. Institute of Chemistry and Material Science; Nangchang University; Nanchang 330047; China
  • Received:2002-04-02 Revised:2002-06-03 Published:2003-05-20 Online:2003-05-20

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摘要： 采用溶胶-凝胶法制备了纳米BaTiO3,用纳米BaTiO3粉体作载体通过浸渍法制备出Ni/BaTiO3催化剂,并将其用于CO2重整CH4制合成气反应,纳米BaTiO3粉体粒径为25～60nm,颗粒外貌近似球形,其最佳制备条件为:水解用水量10mL,混合溶液pH=4～5,凝胶化温度343K,973K下煅烧处理,在反应温度为1073K,空速12000mL/(h·g·cat)下,Ni/BaTiO3催化剂可使重整反应的CH4和CO2转化率分别达到94.4％和93.3％。

关键词: 纳米, BaTiO3, 催化剂, 重整

Abstract: Nanometer BaTiO3 was prepared by a sol-gel method,Ni/BaTiO3 catalyst with nanometer BaTiO3 as support was prepared by an impregnation method, and it
was applied to the reaction of CO2 reforming CH4 to syngas. Under optimum parameters for preparation such as water volume for hydrolysis of 10mL, pH=4～5,
gel temperature 343K, calcination at 973K, BaTiO3 ultrafine powders with spherical particles of 25～60nm in diameter were prepared. The Ni/BaTiO3 catalyst makes
the conversion of CH4 and CO2 reach as high as 94.4% and 93.3% respectively under the reaction conditions:temperature,1073K; the GHSV, 12000mL/(h·g·cat).

Key words: nanometer, barium titanate, catalyst, reforming

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