Girish Mahajan (Editor)

Iron oxide

Updated on
Edit
Like
Comment
Share on FacebookTweet on TwitterShare on LinkedInShare on Reddit
Iron oxide iron oxide from Luancheng FULI PIGMENT FACTORY B2B marketplace

Iron oxide chemistry honors video


Iron oxides are chemical compounds composed of iron and oxygen. All together, there are sixteen known iron oxides and oxyhydroxides.

Contents

Iron oxide What is Iron Oxide with pictures

Iron oxides and oxide-hydroxides are widespread in nature, play an important role in many geological and biological processes, and are widely used by humans, e.g., as iron ores, pigments, catalysts, in thermite (see the diagram) and hemoglobin. Common rust is a form of iron(III) oxide. Iron oxides are widely used as inexpensive, durable pigments in paints, coatings and colored concretes. Colors commonly available are in the "earthy" end of the yellow/orange/red/brown/black range. When used as a food coloring, it has E number E172.

Iron oxide Iron Oxide

How to make iron oxide rust using electrolysis tutorial


Oxides

  • iron(II) oxide, wüstite (FeO)
  • iron(II,III) oxides:
  • magnetite (Fe3O4)
  • Fe4O5
  • Fe5O6
  • Fe5O7
  • Fe25O32
  • Fe13O19
  • iron(III) oxide (Fe2O3)
  • alpha phase, hematite (α-Fe2O3)
  • beta phase, (β-Fe2O3)
  • gamma phase, maghemite (γ-Fe2O3)
  • epsilon phase, (ε-Fe2O3)

    • Hydroxides

  • iron(II) hydroxide (Fe(OH)2)
  • iron(III) hydroxide (Fe(OH)3), (bernalite)

    • Oxide/hydroxides

    Iron oxide Iron Oxides

  • goethite (α-FeOOH),
  • akaganéite (β-FeOOH),
  • lepidocrocite (γ-FeOOH),
  • feroxyhyte (δ-FeOOH),
  • ferrihydrite ( Fe 5 HO 8 ⋅ 4 H 2 O approx.), or 5 Fe 2 O 3 ⋅ 9 H 2 O , better recast as FeOOH ⋅ 0.4 H 2 O
  • high-pressure FeOOH
  • schwertmannite (ideally Fe 8 O 8 ( OH ) 6 ( SO ) ⋅ n H 2 O or Fe 16 3 + O 16 ( OH , SO 4 ) 12-13 ⋅ 10-12 H 2 O )
  • green rust ( Fe x III Fe y II ( OH ) 3 x + 2 y − z ( A − ) z where A− is Cl− or 0.5SO42−)

    • Microbial degradation

    Iron oxide httpsuploadwikimediaorgwikipediacommonsthu

    Several species of bacteria, including Shewanella oneidensis, Geobacter sulfurreducens and Geobacter metallireducens metabolically utilize solid iron oxides as a terminal electron acceptor, reducing Fe(III) oxides to Fe(II) containing oxides.

    Iron oxide Iron oxide Wikipedia

    Iron oxide Iron Oxide Red Synthetic Balaji Group

    References

    Iron oxide Wikipedia
    (Text) CC BY-SA


    Similar Topics