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

doi:10.1016/S1004-9541(13)60493-2

Abstract

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

MA Fu, ZHAO Hongjian . Supercritical Fluid Extraction of a Novel Template from Mesoporous Zirconia and the Effect on Porous Structure[J]. Chin.J.Chem.Eng., 2013, 21(6): 698-700.

马富, 赵红建. Supercritical Fluid Extraction of a Novel Template from Mesoporous Zirconia and the Effect on Porous Structure[J]. Chinese Journal of Chemical Engineering, 2013, 21(6): 698-700.

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