Topotactic Synthesis of Mesoporous 12CaO·7Al2O3 Mesocrystalline Microcubes toward Catalytic Ammonia Synthesis

George Hasegawa, Shizuka Moriya, Miki Inada, Masaaki Kitano, Masaaki Okunaka, Takahisa Yamamoto, Yuko Matsukawa, Kazuma Nishimi, Kazunari Shima, Naoya Enomoto, Satoru Matsuishi, Hideo Hosono, Katsuro Hayashi

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


The mesoporous C12A7 mesocrystalline microcubes were successfully prepared via the topotactic synthesis approach, which could be a versatile platform for fabricating mesoporous inorganic mesocrystals. The single-phase C3AH6 is separated into Ca(OH)2 (to CaO afterward) and C12A7 by means of the spinodal decomposition on heating, giving rise to the cocontinuous mesoporous structure in a cubic mesocrystal after removing the byproducts. The mesopore size can be tuned simply by varying calcination temperature and/or duration time. The catalytic study reveals that the mesoporous C12A7 microcubes can work out as a good support for Ru catalyst even without reduction.

Original languageEnglish
Pages (from-to)4498-4502
Number of pages5
JournalChemistry of Materials
Issue number14
Publication statusPublished - Jul 24 2018

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry


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