Journal ArticleDOI
Hydrogen spillover effects in the reduction of iron oxide
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In this paper, it was shown that freshly formed metal accelerates the rate of reduction of ferric oxide in the presence of water vapour, and this effect was explained on the basis of the spillover of hydrogen from the metal sites to the oxide phase through "portholes" of water.Abstract:
Freshly formed metal accelerates the rate of reduction of ferric oxide in the presence of water vapour. This effect is explained on the basis of the spillover of hydrogen from the metal sites to the oxide phase through “portholes” of water.read more
Citations
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Journal ArticleDOI
Reduction of surface oxide layers on water-atomized iron and steel powder in hydrogen: Effect of alloying elements and initial powder state
TL;DR: In this paper, surface analysis by X-ray photoelectron spectroscopy (XPS) showed a progressive increase in Cr with gradual reduction of the oxide layer, indicating its presence and possible involvement in the oxide reduction.
Journal ArticleDOI
The effect of H2 pressure on the reduction kinetics of hematite at low temperatures
TL;DR: In this article, the reduction kinetics of hematite (Fe2O3) by hydrogen at low temperatures were investigated in batch reactors at 200°C and at H2 pressures of 3, 6 and 8 MPa, respectively.
Book ChapterDOI
Catalyst Activation by Reduction
N. Pernicone,F. Traina +1 more
TL;DR: In this article, the basic principles on which they are based are discussed and the experimental techniques used for basic and applied research on catalyst reduction are briefly discussed, in particular thermogravimetry and temperature programmed reduction.
Journal ArticleDOI
Fe3+ reduction during melt‐synthesis of LiFePO4
Pierre Sauriol,Delin Li,Lida Hadidi,Hernando Villazon,Liling Jin,Bahman Yari,Michel Gauthier,Mickaël Dollé,Patrice Chartrand,Wojciech Kasprzak,Guoxian Liang,Gregory S. Patience +11 more
Journal ArticleDOI
Thermochemical reduction of iron oxide powders with hydrogen: Review of selected thermal analysis studies
TL;DR: In this article , the authors identify the points of consensus, and where discrepancies exist, to explain them, and point out the need for appropriate experimental conditions to derive the intrinsic chemistry of the reduction, such as the limitation of water vapor.
References
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Journal ArticleDOI
On the reduction of tungsten trioxide accelerated by platinum and water
TL;DR: In this paper, the reduction of WO 3 by H 2 to a blue form proceeds readily above 400°C and the acceleration by water is ascribed to a marked increase in the rate of diffusion of the reducing species.
Journal ArticleDOI
Adlineation, Portholes and Spillover
TL;DR: In this article, the role of water in the Pt-WO3 system was investigated and it was shown that if the WO3 was mixed with platinum black and also if water was preadsorbed on the mixture prior to admitting hydrogen to the system, the reduction did not take place at all at room temperature.
Journal ArticleDOI
ESR evidence of hydrogen migration on supported metal catalysts
Kenneth M. Sancier,S.H. Inami +1 more
TL;DR: In this paper, it was shown that the resonance at g = 2.10, developed upon heating of noble-metal-supported catalysts in hydrogen, results from the reduction of iron oxide to metallic iron also present on the supported catalyst.