| dbo:abstract |
La Reacció de Schikorr descriu formalment la conversió de l'hidròxid de ferro(II) (Fe(OH)₂) en (Fe₃O₄). Les bases d'aquesta reacció van ser estudiades pel químic alemany , que estava especialitzat en la corrosió del ferro (~1928-1933) . La reacció global proposada per Schikorr es pot escriure com segueix: 3 Fe(OH)₂ → Fe₃O₄ + H₂ + 2 H₂O És d'especial interès en el context de la serpentinització, la formació d'hidrogen per l'acció de l'aigua sobre un mineral comú. La reacció global es pot descompondre en dues reaccions redox: 2 (Fe2+ → Fe3+ + e−) (oxidació d'ions de ferro(II)2 (H₂O + e− → ½ H₂ + OH−) (reducció de 2 protons d'aigua) per a donar: 2 Fe2+ + 2 H₂O → 2 Fe3+ + H₂ + 2 OH− aleshores és possible reorganitzar la reacció global com: 3 Fe(OH)₂ + 2 H₂O → (FeO + H₂O) + (Fe₂O₃ + 3 H₂O) + H₂3 Fe(OH)₂ + 2 H₂O → FeO + Fe₂O₃ + 4 H₂O + H₂3 Fe(OH)₂ → FeO + Fe₂O₃ + 2 H₂O + H₂ Considerant la formació dòxid de ferro(II,III): Fe(II)O + Fe(III)₂O₃ → Fe₃O₄ És possible escriure la reacció equilibrada global com: 3 Fe(OH)₂ → (FeO•Fe₂O₃) + 2 H₂O + H₂ en la seva forma final, coneguda com la reacció Schikorr : 3 Fe(OH)₂ → Fe₃O₄ + 2 H₂O + H₂ (ca) Die Schikorr-Reaktion beschreibt formal die Umwandlung von Eisen(II)-hydroxid in Eisen(II,III)-oxid (Magnetit). Unter anaeroben Bedingungen kann Eisenhydroxid durch Wasser oxidiert werden unter Bildung von Magnetit und molekularem Wasserstoff. Dieser Prozess ist durch die Schikorr-Reaktion gegeben, die erstmals von (* 16. November 1901), einem deutschen Spezialisten für Eisenkorrosion, in seinen frühen Arbeiten (1928–1933) über Eisen(II)- und Eisen(III)-hydroxide untersucht wurde. Das kristallisierte Magnetit ist thermodynamisch stabiler als das Eisenhydroxid. Die Schikorr-Reaktion ist wichtig für das Verständnis einiger Korrosionsprozesse, wie der Wasserstoffversprödung. (de) The Schikorr reaction formally describes the conversion of the iron(II) hydroxide (Fe(OH)2) into iron(II,III) oxide (Fe3O4). This transformation reaction was first studied by . The global reaction follows: It is of special interest in the context of the serpentinization, the formation of hydrogen by the action of water on a common mineral. (en) La Reazione di Schikorr è un processo chimico in cui l'idrossido ferroso viene convertito in magnetite dopo vari passaggi.Venne studiata per la prima volta da negli anni tra il 1928 ed il 1933. (it) |
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The Schikorr reaction formally describes the conversion of the iron(II) hydroxide (Fe(OH)2) into iron(II,III) oxide (Fe3O4). This transformation reaction was first studied by . The global reaction follows: It is of special interest in the context of the serpentinization, the formation of hydrogen by the action of water on a common mineral. (en) La Reazione di Schikorr è un processo chimico in cui l'idrossido ferroso viene convertito in magnetite dopo vari passaggi.Venne studiata per la prima volta da negli anni tra il 1928 ed il 1933. (it) La Reacció de Schikorr descriu formalment la conversió de l'hidròxid de ferro(II) (Fe(OH)₂) en (Fe₃O₄). Les bases d'aquesta reacció van ser estudiades pel químic alemany , que estava especialitzat en la corrosió del ferro (~1928-1933) . La reacció global proposada per Schikorr es pot escriure com segueix: 3 Fe(OH)₂ → Fe₃O₄ + H₂ + 2 H₂O És d'especial interès en el context de la serpentinització, la formació d'hidrogen per l'acció de l'aigua sobre un mineral comú. La reacció global es pot descompondre en dues reaccions redox: per a donar: 2 Fe2+ + 2 H₂O → 2 Fe3+ + H₂ + 2 OH− (ca) Die Schikorr-Reaktion beschreibt formal die Umwandlung von Eisen(II)-hydroxid in Eisen(II,III)-oxid (Magnetit). Unter anaeroben Bedingungen kann Eisenhydroxid durch Wasser oxidiert werden unter Bildung von Magnetit und molekularem Wasserstoff. Dieser Prozess ist durch die Schikorr-Reaktion gegeben, die erstmals von (* 16. November 1901), einem deutschen Spezialisten für Eisenkorrosion, in seinen frühen Arbeiten (1928–1933) über Eisen(II)- und Eisen(III)-hydroxide untersucht wurde. Das kristallisierte Magnetit ist thermodynamisch stabiler als das Eisenhydroxid. (de) |
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Reacció de Schikorr (ca) Schikorr-Reaktion (de) Reazione di Schikorr (it) Schikorr reaction (en) |
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