Preparation and Analysis of Barium Ferrate(VI)

Gump, J. R.; Wagner, William F.

doi:10.1021/ac60096a027

Cited by 20 publications

(13 citation statements)

References 4 publications

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“…Barium ferrate(VI) is the least soluble of the ferrates(VI) in alkaline water, indicating the great structural similarity with barium sulfate. It can therefore be readily precipitated from aqueous solutions of Ba(OH) 2 and BaCl 2 by addition of alkaline solutions of Na 2 [FeO 4 ] or K 2 [FeO 4 ] , , , , , , . The product is washed with water and dried in a vacuum.…”

Section: The Chemistry Of Ferrates(vi)mentioning

confidence: 99%

The History and the Current Revival of the Oxo Chemistry of Iron in its Highest Oxidation States: Fe^VI – Fe^VIII

Schmidbaur

2018

Zeitschrift anorg allge chemie

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The history of the oxo compounds of iron in its highest oxidation states is reviewed and modern activities in this long neglected area of inorganic chemistry are highlighted. The chemistry of ferrates(VI) is the most rapidly advancing branch owing to several potential applications in diverse fields such as environmental chemistry and energy storage. Convenient and high‐yield preparations of ferrates(VI) in high purity are presented, followed by a coverage of the analytical, spectroscopic, and structural characterization in the solid and in solution, with a focus on the stability of these compounds, which had long been under‐estimated. Particular attention has been paid to the fascinating mechanisms that have been proposed for the intriguing “self‐decay” of the [FeO4]2– dianion. Redox processes with inorganic and organic substrates are summarized including fresh and waste water treatment on the one hand and “super‐iron batteries” on the other. Recent advances in the experimental and computational approach to ferrates(VII) [FeO4]– and the elusive “iron tetroxide” [FeO4] are described.

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Section: The Chemistry Of Ferrates(vi)mentioning

confidence: 99%

The History and the Current Revival of the Oxo Chemistry of Iron in its Highest Oxidation States: Fe^VI – Fe^VIII

Schmidbaur

2018

Zeitschrift anorg allge chemie

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“…Barium ferrate(VI) was prepared by using a method reported earlier [33]. Briefly, a basic solution of the barium chloride was allowed to react reacting with a solution of K 2 FeO 4 at 0 • C. Solutions used in this procedure were purged with nitrogen in order to minimize the presence of atmospheric CO 2 .…”

Section: Sample Preparationmentioning

confidence: 99%

Thermal decomposition of barium ferrate(VI): Mechanism and formation of FeIV intermediate and nanocrystalline Fe2O3 and ferrite

Machala

Sharma

Кузманн

et al. 2016

Journal of Alloys and Compounds

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Simple high-valent iron-oxo species, ferrate(VI) (Fe VI O 2-4 , Fe(VI)) has applications in energy storage, organic synthesis, and water purification. Of the various salts of Fe(VI), barium ferrate(VI) (BaFeO 4) has also a great potential as a battery material. This paper presents the thermal decomposition of BaFeO 4 in static air and nitrogen atmosphere, monitored by combination of thermal analysis, Mössbauer spectroscopy, X-ray powder diffraction, and electron-microscopic techniques. The formation of Fe IV species in the form of BaFeO 3 was found to be the primary decomposition product of BaFeO 4 at temperature around 190 • C under both studied atmospheres. BaFeO 3 was unstable in air reacting with CO 2 to form barium carbonate and speromagnetic amorphous iron(III) oxide nanoparticles (< 5 nm). Above 600 • C, a solid state reaction between BaCO 3 and Fe 2 O 3 occurred, leading to the formation of barium ferrite nanoparticles, BaFe 2 O 4 (20-100 nm).

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“…During this time, several workers [12][13][14][15][16] investigated the chemical production of ferrate(VI) along with accompanying purification procedures, while electrochemical techniques were probed by Toušek [17][18][19] and Helferich [20] and later by Venkatadri et al [21]. The work of the latter three groups focused on optimizing conditions that provide the highest current efficiency for electrochemical synthesis of ferrate(VI).…”

Section: Introductionmentioning

confidence: 99%

Research progress in the electrochemical synthesis of ferrate(VI)

Mácová

Bouzek

Hı́veš

et al. 2009

Electrochimica Acta

138

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Preparation and Analysis of Barium Ferrate(VI)

Cited by 20 publications

References 4 publications

The History and the Current Revival of the Oxo Chemistry of Iron in its Highest Oxidation States: Fe^VI – Fe^VIII

The History and the Current Revival of the Oxo Chemistry of Iron in its Highest Oxidation States: Fe^VI – Fe^VIII

Thermal decomposition of barium ferrate(VI): Mechanism and formation of FeIV intermediate and nanocrystalline Fe2O3 and ferrite

Research progress in the electrochemical synthesis of ferrate(VI)

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Preparation and Analysis of Barium Ferrate(VI)

Cited by 20 publications

References 4 publications

The History and the Current Revival of the Oxo Chemistry of Iron in its Highest Oxidation States: FeVI – FeVIII

The History and the Current Revival of the Oxo Chemistry of Iron in its Highest Oxidation States: FeVI – FeVIII

Thermal decomposition of barium ferrate(VI): Mechanism and formation of FeIV intermediate and nanocrystalline Fe2O3 and ferrite

Research progress in the electrochemical synthesis of ferrate(VI)

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The History and the Current Revival of the Oxo Chemistry of Iron in its Highest Oxidation States: Fe^VI – Fe^VIII

The History and the Current Revival of the Oxo Chemistry of Iron in its Highest Oxidation States: Fe^VI – Fe^VIII