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›› 2009, Vol. 9 ›› Issue (4): 819-823.

• 材料工程专栏 • 上一篇    下一篇

H2O2改性溶胶-凝胶法制备ZrO2基催化剂载体

杨玮娇 李会泉 李锐星 柳海涛 唐清   

  1. 中国科学院过程工程研究所湿法冶金清洁生产技术国家工程实验室 中国科学院过程工程研究所 北京航空航天大学材料科学与工程学院 中国科学院过程工程研究所湿法冶金清洁生产技术国家工程实验室 中国科学院过程工程研究所
  • 收稿日期:2009-03-18 修回日期:2009-05-04 出版日期:2009-08-20 发布日期:2009-08-20
  • 通讯作者: 杨玮娇

Synthesis of ZrO2-based Catalyst Support by Improved Sol-Gel Method with H2O2 Oxidation

YANG Wei-jiao, TANG Qing, LI Rui-xing, LIU Hai-tao, LI Hui-quan,   

  1. National Engineering Laboratory for Clean Production Technology of Hydrometallurgy, Institute of Process Engineering，Chinese Academy of Sciences Institute of Process Engineering, Chinese Academy of Sciences School of materials Science and Engineering, Beihang University National Engineering Laboratory for Clean Production Technology of Hydrometallurgy, Institute of Process Engineering，Chinese Academy of Sciences National Engineering Laboratory for Clean Production Technology of Hydrometallurgy, Institute of Process Engineering，Chinese Academy of Sciences
  • Received:2009-03-18 Revised:2009-05-04 Online:2009-08-20 Published:2009-08-20
  • Contact: YANG Wei-jiao,

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被引次数

16

摘要： 采用改性溶胶-凝胶法，以H2O2除去胶体中Cl-后，用蒸馏法干燥，制备了ZrO2粉末. 考察了H2O2/ZrO2摩尔比、蒸馏温度及煅烧温度对ZrO2粉末结构特性的影响. 结果表明，优化的工艺条件为：H2O2/ZrO2摩尔比1:2，蒸馏温度80℃，煅烧温度500℃. 产品为粒径12~16 nm的类球形高纯四方相纳米氧化锆颗粒. 该粉末担载5%(w) Cr2O3后用于CO2氧化丙烷脱氢制丙烯的催化，丙烷转化率为53.4%，丙烯收率为38.1%，CO2转化率为33.3%.

关键词: ZrO2, 溶胶-凝胶法, H2O2, 蒸馏法, 丙烷脱氢

Abstract: Nano-sized tetragonal ZrO2 particles from 12 to 16 nm in diameter were successfully synthesized by an improved sol-gel method, assisted with a distillation-dehydration process after oxidization of Cl- anions by H2O2. The microstructure of synthesized ZrO2 particles was characterized with SEM, TEM, XRD and thermal analysis. The effects of molar ratio of H2O2 to ZrO2, distillation temperature and calcination temperature on the microstructure of ZrO2 powder were studied. The optimum conditions were obtained as follows: molar ratio of H2O2 to ZrO2 1:2, distillation temperature 80℃ and calcination temperature 500℃. Spherical-like nano-sized tetragonal ZrO2 particles could be obtained by the process, and the reactivity of this ZrO2 loading 5%(w) Cr2O3 for propane dehydrogenation oxidized by CO2 was as follow: 53.4% propane conversion rate, 38.1% propylene yield and 33.3% CO2 conversion rate.

Key words: ZrO2, sol-gel, H2O2, distillation method, propane dehydrogenation

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