Journal ArticleDOI
Steam-iron process: Influence of steam on the kinetics of iron oxide reduction
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In this paper, the effect of water vapour on the kinetics of the steam-iron process was investigated and two models, the competitive model and the inhibitive model, were proposed to predict the behavior of the solid subjected to successive reductive and oxidative cycles.About:
This article is published in International Journal of Hydrogen Energy.The article was published on 2011-10-01. It has received 35 citations till now. The article focuses on the topics: Iron oxide & Reaction rate.read more
Citations
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Journal ArticleDOI
Reduction of Iron Oxides with Hydrogen—A Review
Daniel Spreitzer,Johannes Schenk +1 more
Journal ArticleDOI
In Situ DRIFTS-MS Study of the Anaerobic Oxidation of Ethanol over Spinel Mixed Oxides
Juliana Velasquez Ochoa,Cristian Trevisanut,Cristian Trevisanut,Jean-Marc M. Millet,Guido Busca,Fabrizio Cavani +5 more
TL;DR: In this paper, the anaerobic oxidation of ethanol over spinel mixed oxides was studied by means of in situ diffuse reflectance spectroscopy (DRIFTS) and mass spectrometry (MS).
Journal ArticleDOI
Sticking of iron ore pellets during reduction with hydrogen and carbon monoxide mixtures: Behavior and mechanism
TL;DR: In this paper, the effects of the temperature, syngas constituents and reduction degree on the sticking properties of iron ore pellets in the presence of H2-CO mixtures were evaluated.
Journal ArticleDOI
Magnetic bio-activated carbon production from lignin via a streamlined process and its use in phosphate removal from aqueous solutions.
TL;DR: The results indicate that iron species are embedded into the carbon matrix by lignin melting, suggesting that the representative MBAC product has a comparable phosphate adsorption capacity to most of the reported MBCs and MBACs.
Journal ArticleDOI
Role of Catalyst Oxidation State in the Growth of Vertically Aligned Carbon Nanotubes
TL;DR: In this article, the impact of gas phase pretreatment of a supported iron-oxide catalyst utilized in aligned carbon nanotube (CNT) growth is studied to understand the correlation between the catalyst oxidation state and the growth characteristics of the aligned CNT forests.
References
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Journal ArticleDOI
Kinetics of wet atmosphere reduction of a fused iron catalyst for ammonia synthesis
TL;DR: In this article, the effect of water vapour on the reduction rate of an iron catalyst has been investigated and it has been shown that removing water from the gas phase instantaneously accelerated the reduced reduction rate.
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The role of water in the low-temperature hydrogen reduction of hematite into iron, and the role of the surface oxygen chemical potential in double reactions
TL;DR: The role played by water vapour during the low temperature reduction of hematite into magnetite by carbon monoxide has been reported but the possibility that this effect was not due to hydrogen produced from the H2O+CO shift reaction had to be eliminated.
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Kinetics for Reduction of Aciculate Ultrafineα-Fe2O3Particles to Fe3O4Particles
Chunzhong Li,Zhifu Hong +1 more
TL;DR: In this paper, the reduction of aciculate ultrafine α-Fe2O3particles to Fe3O4 was fitted to the nucleation and grain-growth model, and the reduction kinetic equation was written asdα/dt=9.00×103exp(−72.7×103/RT)(1−α)α0.54.
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Reduction of Powdered Iron Oxide - A Tubular Reactor
I. G. Dalla Lana,N. R. Amundson +1 more
Journal ArticleDOI
A new approach to kinetic study of wet atmosphere activation of fused iron catalyst
Andrzej Barański,Roman Dziembaj,Andrzej Kotarba,J.M. kLagan,J. kLojewska,E. Pieprzyk,L. Mleczko,Manfred Baerns +7 more
TL;DR: In this paper, a new experimental method has been proposed enabling the determination of the effect of reduction degree (R ) and concentration of water vapour ( c H 2 O ) on the activation rate ( r= d R d t ) of the iron catalyst for ammonia synthesis.