Journal ArticleDOI
Etude par spectrométrie Mössbauer des carbures de Fer Fe3C et Fe5C2
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In this paper, a comparison of the quadrupole splittings of Fe3C and Fe5C2, in the paramagnetic state, leads us to attribute sites I and II of Fe5c2 to FeI and FeII, respectively.About:
This article is published in Journal of Solid State Chemistry.The article was published on 1976-09-01. It has received 107 citations till now.read more
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The renaissance of iron-based Fischer-Tropsch synthesis: on the multifaceted catalyst deactivation behaviour.
Emiel de Smit,Bert M. Weckhuysen +1 more
TL;DR: This critical review will summarize the current state of knowledge of the underlying mechanisms for the activation and eventual deactivation of iron-based Fischer-Tropsch catalysts and suggest systematic approaches for relating chemical identity to performance in next generation iron- based catalyst systems.
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Genesis of iron carbides and their role in the synthesis of hydrocarbons from synthesis gas
T. Herranz,Sergio Rojas,Francisco J. Pérez-Alonso,M. Ojeda,Pilar Terreros,José Luis García Fierro +5 more
TL;DR: A series of iron-based Fischer-Tropsch catalysts, either pure or promoted with Ce or Mn, were subjected to different activation treatments with H2, CO, or H2/CO as mentioned in this paper.
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Characterization of surface species on iron synthesis catalysts by X-ray photoelectron spectroscopy
TL;DR: In this article, the combination of XPS and AES can be used effectively for identification of the chemical states of iron on synthesis catalyst surfaces, which can also be used to identify surface carbides.
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Nanocrystalline α-Fe, Fe3C, and Fe7C3 produced by CO2 laser pyrolysis
TL;DR: In this paper, particles with narrow size distributions were produced by CO2 laser pyrolysis of vapor mixtures of Fe(CO)5 and C2H4, and they were observed to be ferromagnetic in this size range.
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Room-Temperature Mechanosynthesis of Carbides by Grinding of Elemental Powders
Paolo Matteazzi,Gerard Le Caër +1 more
TL;DR: In this paper, the direct room-temperature synthesis of most metal carbides by milling metal-carbon powders (size some tens of micrometers) mixtures is described.
References
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Journal ArticleDOI
Evaluation of Mössbauer spectra for 57Fe
TL;DR: In this paper, a Fortran program is described which computes the expected Mossbauer spectra of 57 Fe for any combination of a magnetic field, H (0) and an electrical field gradient, EFG.
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Electronic exchange and the Mössbauer effect in iron-based interstitial compounds
TL;DR: In this article, the average hyperfine field to average moment ratio is the same for iron-based interstitial compounds with cementite structure, and the effects of the interstitials appear to be mainly local.
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Fe 57 Mössbauer Effect in Fe 2 B, FeB and Fe 3 C
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Hyperfine Interactions of 57 Fe in Fe 3 C
M. Ron,Z. Mathalone +1 more
TL;DR: In this paper, the absence of the quadrupole interaction from the room-temperature spectrum of the Fe 3 C was shown to be only apparent when the spectrum was unfolded into two components in accordance with the two known structural sites, $G$ (general) and $S$ (special).