Synthesis of monodispersed micaceous iron oxide by the oxidation of iron with oxygen under hydrothermal conditions

Satoshi Uchida, Tsugio Sato, Akitsugu Okuwaki

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The oxidation behavior of iron powder with oxygen was investigated in 5–25 m NaOH solutions at 5 MPa of oxygen partial pressure and 130–290°C, where m = mol(kg H2O)−1. Monodispersed micaceous iron oxide, α‐Fe2O3, was synthesized by the oxidation of iron powder with 5 MPa of oxygen in 10–16 m NaOH solutions at 250–270°C. The diameter of micaceous iron oxide greatly changed depending on the reaction conditions such as the temperature, reaction time and concentrations of NaOH and coexisting ions.

Original languageEnglish
Pages (from-to)221-227
Number of pages7
JournalJournal of Chemical Technology & Biotechnology
Volume57
Issue number3
DOIs
Publication statusPublished - 1993

Keywords

  • hematite
  • hydrothermal synthesis
  • micaceous iron oxide
  • oxygen oxidation of iron
  • sodium hydroxide solution

ASJC Scopus subject areas

  • Biotechnology
  • Chemical Engineering(all)
  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Waste Management and Disposal
  • Pollution
  • Organic Chemistry
  • Inorganic Chemistry

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