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 journalArticlepeer-review

    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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