熱分解に誘起される相分離を利用した多孔質セラミックス多面体粒子の作製

  • 長谷川 丈二
    東海国立大学機構名古屋大学 未来材料・システム研究所

書誌事項

タイトル別名
  • Synthesis of Porous Ceramic Polyhedral Particles via Pyrolysis-induced Phase Separation

抄録

<p>A new synthetic strategy to produce porous ceramic particles with well-defined polyhedral particle morphology and three-dimensionally interconnected mesoporous structure has been developed by means of the combination of topotactic conversion of polyhedral crystal precursors and pyrolysis-induced phase separation. The crystal morphology of precursors is controlled by the liquid-phase synthesis, while the mesoporous structure in each polyhedral particle is tailored by the selective removal of a phase-separated phase preserving the other phase. In this review, two examples of porous polyhedral metal oxides prepared from hydrogarnet precursors: mesoporous and mesocrystalline 12CaO • 7Al2O3 mayenite microcubes and porous SrFeO3-δ perovskite polyhedral particles. The synthesis and characterization of these porous materials as well as their applications in catalysis are overviewed.</p>

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