Sonochemical powder processing of iron hydroxides

Naoya Enomoto, Jun Ichi Akagi, Zenbe E. Nakagawa

研究成果: ジャーナルへの寄稿学術誌査読

51 被引用数 (Scopus)

抄録

Iron (II) hydroxide was oxidized in an ultrasonic-activated solution to produce α-FeOOH (goethite) or Fe3O4 (magnetite). This process involves the dissolution of Fe(OH)2, the oxidation of Fe2+ to Fe3+, and the precipitation of the products. It was found that the ultrasonic treatment greatly fasten the appearance and the growth of the products if oxygen was sufficiently supplied. When the oxygen supply was insufficient, on the other hand, an obvious phenomenon of sonochemical switching due to the enhanced oxidation was observed; that is, ultrasound promoted the α-FeOOH formation and suppressed the formation of Fe3O4 which has lower oxidation number (Fe= +8/3) than α-FeOOH (Fe= +3).

本文言語英語
ページ(範囲)S97-S103
ジャーナルUltrasonics Sonochemistry
3
2
DOI
出版ステータス出版済み - 1996
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 化学工学(その他)
  • 環境化学
  • 放射線学、核医学およびイメージング
  • 音響学および超音波学
  • 有機化学
  • 無機化学

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