Structure-inheriting solid-state reactions under hydrothermal conditions

We have explored several structure-inheriting solid-state reactions (SISSRs) under hydrothermal conditions for syntheses in the Co–Mo–O system. And we found an interesting hydrothermal SISSR from CoMoO4·3/4H2O to high-pressure (hp-) phase of CoMoO4, which enabled us to considerably reduce the severe conditions for the synthesis of hp-CoMoO4. As similar hydrothermal SISSRs are expected to be useful tools for material syntheses, we also briefly discuss them as a means of developing novel material syntheses and designs.

The present structure-inheriting solid-state reaction (SISSR) under a hydrothermal condition (ca. 10 bars and 453 K) enables us to markedly reduce the severe conditions for the usual synthesis of hp-CoMoO4 via a solid-state phase transition (50 kbars and ca. 900 K).Figure optionsDownload as PowerPoint slide