Thermal decomposition of Prussian blue: Isotopic labeling with Mössbauer-inactive Fe-56

Allen, J. F.; Bonnette, A.K.

doi:10.1016/0022-1902(74)80205-8

Cited by 24 publications

(15 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The formation of BW differs from the previous study, where a monoclinic iron cyanide structure was identified (Aparicio et al, 2012); however, it agrees with other study performed in argon atmosphere (Allen and Bonnette, 1974). It is suggested that the reason of such disagreement might be the different heating rate of 10 vs. 5 K min −1 in this study, as this can be compared with the diffraction patterns from PB samples taken after the dehydration steps at the beginning of the PB transformation (step III, at 400 and 380°C for samples heated under argon with 10 and 5 K min −1 , respectively) in Figure S5, where the diffraction patterns are significantly different.…”

Section: B Decomposition Of Pb Under Argon Atmosphere: Tg/ Dsc Analysessupporting

confidence: 82%

From Prussian blue to iron carbides: high-temperature XRD monitoring of thermal transformation under inert gases

2017

View full text Add to dashboard Cite

The thermal behavior and decomposition reaction of Prussian blue (PB) (Fe43+[Fe2+(CN)6]3·xH2O) was studied under inert atmosphere of argon by simultaneous thermogravimetry and differential scanning calorimetry, from room temperature up to 900 °C, with a heating rate of 5 K min−1. Parallel to the thermogravimetric measurements, the thermal process was monitored by in situ X-ray powder diffraction (XRD) technique under nitrogen atmosphere. The thermogravimetric data show six steps, corresponding to different stages of the decomposition reaction; comparable results are also obtained by in situ XRD. In addition, a set of PB samples heated up to selected temperatures (190, 300, 370, 540, 680, and 790 °C) were ex situ analyzed by powder XRD and Mössbauer spectroscopy. It is found that PB exhibits a negative thermal expansion prior to the water release from its crystalline lattice. Above 300 °C, the decomposition is based on the release of cyanogen gas from the PB structure. At 370 °C, a cubic iron cyanide compound is formed, while at higher temperatures several iron carbides were found. The subsequent thermal treatment of these carbides leads to the formation of metallic iron and graphite.

show abstract

Section: B Decomposition Of Pb Under Argon Atmosphere: Tg/ Dsc Analysessupporting

confidence: 82%

From Prussian blue to iron carbides: high-temperature XRD monitoring of thermal transformation under inert gases

2017

View full text Add to dashboard Cite

show abstract

“…2, inset). A further decrease is observed at temperatures above 240°C and the gallery height finally reduces to $0.1 nm at about 320°C, indicating that at these temperatures the intercalated structure has essentially broken down, leaving in the interlayer residues like, e.g., Fe(CN) 2 [26][27][28]. This trend is in qualitative agreement with XRD results by Miyata and Hirose [29] showing that the interlayer gallery of a Mg-Al-[Fe(CN) 6 ] 4À hydrotalcite has drastically decreased at 250°C.…”

Section: Synthesis and Clay Intercalation Of The Cationic Pb Compoundmentioning

confidence: 91%

“…Of particular significance is the dissimilarity of the AFFC and ST-Al-FFC traces in the 300-500°C region, since it indicates that the thermal decomposition of the ferric ferrocyanide structure in these two materials goes through different rearrangement and recrystallization modes. More specifically, the processes known to unfold during the thermal decomposition of ferric ferrocyanides [26][27][28] suggest that the aforementioned differences are probably caused by the presence of Al-hydroxy cations in ST-Al-FFC (see below). In a simplified way, these processes can be depicted as follows: the onset of CN liberation around 300°C leads to reduction of trivalent iron and subsequent disruption of the Fe 2+ -CN-Fe 3+ network.…”

Section: Hrtem Imagesmentioning

confidence: 96%

A two-dimensional magnetic hybrid material based on intercalation of a cationic Prussian blue analog in montmorillonite nanoclay

Gournis

Papachristodoulou

Maccallini

et al. 2010

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

A highly ordered two-dimensional hybrid magnetic nanocomposite has been prepared by synthesizing and intercalating a new cationic aluminum-hydroxy ferric ferrocyanide compound into a cation-adsorbing nanoclay (montmorillonite). Chemical and structural properties were investigated by X-ray diffraction, transmission electron microscopy, thermogravimetric and differential thermal analyses, Fourier transform infrared, X-ray photoemission, and Mössbauer spectroscopies. Elemental analysis was based on proton-induced gamma ray emission and X-ray fluorescence spectroscopy data, N/C elemental ratios, and cation-exchange capacity measurements. Magnetic properties were studied by SQUID magnetometry. The results suggest: (i) that the cationic Prussian blue analog comprises Al-hydroxy cations embedded into a monolayer thick two-dimensional ferric ferrocyanide array; and (ii) that the clay-Prussian blue nanohybrid consists of such arrays stacked between the clay layers. The latter material orders ferromagnetically at approximately 5K showing a hundred times higher remanence than that of the starting material, soluble Prussian blue (ammonium ferric ferrocyanide).

show abstract

“…NKFF-5) start to decompose when the temperature reaches to about 160°C, as confirmed by the change of DTA curves. The sharp weight loss occurring at about 300°C can be attributed to the decomposition of NaKFeHCF to Fe(CN) 2 , CN and A 2 O (A=Na or K, the O atom comes from coordinated water)[25]. The last weight loss step occurring in the range of 500°C to 700°C due to the decomposition of Fe(CN) 2…”

mentioning

confidence: 99%

The role of potassium ions in iron hexacyanoferrate as a cathode material for hybrid ion batteries

Liao

Zou

et al. 2016

Electrochimica Acta

View full text Add to dashboard Cite

The synthesis of Na x K y Fe[Fe(CN) 6 ] through a simple co-precipitation method and the application of these nanoparticles in sodium-ion batteries are presented. K 1.90 Fe[Fe(CN) 6 ] with a cubic structure shows low volumetric change during electrochemical cycling. It is clarified by ex-situ X-ray diffraction and cyclic voltammetry curves that K + influences the intercalation sites of the neighboring Na +. More significantly, this hexacyanoferrate delivers a high capacity of 137.0 mAh g − 1 at a current density of 14 mA g − 1 and superior cyclability with 94% capacity retention after 120 cycles, showing great promise for sodium-ion battery applications.

show abstract

Thermal decomposition of Prussian blue: Isotopic labeling with Mössbauer-inactive Fe-56

Cited by 24 publications

References 5 publications

From Prussian blue to iron carbides: high-temperature XRD monitoring of thermal transformation under inert gases

From Prussian blue to iron carbides: high-temperature XRD monitoring of thermal transformation under inert gases

A two-dimensional magnetic hybrid material based on intercalation of a cationic Prussian blue analog in montmorillonite nanoclay

The role of potassium ions in iron hexacyanoferrate as a cathode material for hybrid ion batteries

Contact Info

Product

Resources

About