SCI和EI收录∣中国化工学会会刊

Chin.J.Chem.Eng. ›› 2013, Vol. 21 ›› Issue (6): 698-700.DOI: 10.1016/S1004-9541(13)60493-2

• RESEARCH NOTES • Previous Articles     Next Articles

Supercritical Fluid Extraction of a Novel Template from Mesoporous Zirconia and the Effect on Porous Structure

MA Fu, ZHAO Hongjian   

  1. Department of Chemical Engineering, Ningxia Teachers University, Guyuan 756000, China
  • Received:2011-08-09 Revised:2012-09-16 Online:2013-07-03 Published:2013-06-28
  • Contact: MA Fu
  • Supported by:

    Supported by the Natural Science Foundation of Ningxia Province and Innovation Team Projects in Ningxia Teachers University.

Supercritical Fluid Extraction of a Novel Template from Mesoporous Zirconia and the Effect on Porous Structure

马富, 赵红建   

  1. Department of Chemical Engineering, Ningxia Teachers University, Guyuan 756000, China
  • 通讯作者: MA Fu
  • 基金资助:

    Supported by the Natural Science Foundation of Ningxia Province and Innovation Team Projects in Ningxia Teachers University.

Abstract: Mesoporous zirconia was synthesized by a new and simple method. Zirconium n-propoxide was used as the zirconium source. A small, inexpensive nonsurfactant, triethanolamine, was used as the template. The template was removed by thermal treatment in air and supercritical fluid extraction using CO2. The structure of the resulting materials was characterized by X-ray diffraction, transmission electron microscopy, and N2 adsorption-desorption analyses. The materials are found to have narrowly distributed average pore diameters and wormhole-like pore channels. However, higher surface area and larger pore volume are exhibited after supercritical fluid extraction with CO2. The removal of the template by thermal treatment also leads to condensation and mild shrinkage of the zirconia framework.

Key words: mesoporous zirconia, triethanolamine, structure, calcination, supercritical fluid extraction

摘要: Mesoporous zirconia was synthesized by a new and simple method. Zirconium n-propoxide was used as the zirconium source. A small, inexpensive nonsurfactant, triethanolamine, was used as the template. The template was removed by thermal treatment in air and supercritical fluid extraction using CO2. The structure of the resulting materials was characterized by X-ray diffraction, transmission electron microscopy, and N2 adsorption-desorption analyses. The materials are found to have narrowly distributed average pore diameters and wormhole-like pore channels. However, higher surface area and larger pore volume are exhibited after supercritical fluid extraction with CO2. The removal of the template by thermal treatment also leads to condensation and mild shrinkage of the zirconia framework.

关键词: mesoporous zirconia, triethanolamine, structure, calcination, supercritical fluid extraction