Rapid and Continuous Hydrothermal Crystallization of Metal Oxide Particles in Supercritical Water

Tadafumi Adschiri, Katsuhito Kanazawa, Kunio Arai

Research output: Contribution to journalArticlepeer-review

397 Citations (Scopus)

Abstract

Hydrolysis of 10 metal salt aqueous solutions of 6 metal oxides was conducted in supercritical water. Continuous and rapid production of metal oxide fine particles was achieved by mixing a metal salt aqueous solution with preheated water fed from another line. The reaction time required was less than 2 min. Particle size, morphology, and crystal structure of the obtained metal (hydrous) oxides were examined. Particle size (20 to 600 nm) was different among the systems but the size range was relatively narrow in all the cases.

Original languageEnglish
Pages (from-to)1019-1022
Number of pages4
JournalJournal of the American Ceramic Society
Volume75
Issue number4
DOIs
Publication statusPublished - 1992 Apr

Keywords

  • crystallization
  • hydrolysis
  • hydrothermal process
  • metal oxides
  • water

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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