Results 161 to 170 of about 15,555 (214)
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Sensors and Actuators B: Chemical, 1996
New gas sensors based on novel semiconducting metal oxides are developed. In comparison to the sensors based on SnO2 their properties are improved in several items. The main improvements are the lower influence of humidity, the long-term stability, the ability to start measurement immediately after switch on and reduced unit spread. The sensors will be
H. Meixner, U. Lampe
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New gas sensors based on novel semiconducting metal oxides are developed. In comparison to the sensors based on SnO2 their properties are improved in several items. The main improvements are the lower influence of humidity, the long-term stability, the ability to start measurement immediately after switch on and reduced unit spread. The sensors will be
H. Meixner, U. Lampe
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Industrial & Engineering Chemistry, 1958
Oxidation theories and measurements are reviewed. Three tables are given that list oxides, metals, and alloys with references to oxidation studies. The review covers articles written to November 30, 1960. Special emphasis is placed on reference to work on diffusion and interfacial controlled reaction kinetics, structures, lattice defect types, and ...
Walter W. Smeltzer, Lyndon H. Everett
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Oxidation theories and measurements are reviewed. Three tables are given that list oxides, metals, and alloys with references to oxidation studies. The review covers articles written to November 30, 1960. Special emphasis is placed on reference to work on diffusion and interfacial controlled reaction kinetics, structures, lattice defect types, and ...
Walter W. Smeltzer, Lyndon H. Everett
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Science, 2002
Metal oxidation is often unwanted--for example, in the case of corrosion--but under controlled conditions the oxidation of metals can be beneficial for the manufacture and performance of advanced materials9. In their Perspective, Over and Seitsonen provide a brief overview of the complex oxidation behavior of metal surfaces.
Over, H, Seitsonen, A P
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Metal oxidation is often unwanted--for example, in the case of corrosion--but under controlled conditions the oxidation of metals can be beneficial for the manufacture and performance of advanced materials9. In their Perspective, Over and Seitsonen provide a brief overview of the complex oxidation behavior of metal surfaces.
Over, H, Seitsonen, A P
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Parabolic oxidation of metals to metal deficit oxides
Oxidation of Metals, 1969A stepwise mechanism is outlined for diffusion-controlled oxidation of a metal Me to a metal deficit oxide Me3−zO, where z is the normal valence of Me in Me3−zO and may equal either 1 or 2. Specifically, oxidation is postulated to occur by (1) chemisorption of a singly ionized oxygen atom O− on the oxide surface with the concomitant formation of an ...
D. W. Bridges, W. M. Fassell
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Proceedings of the IEEE, 2012
In this paper, recent progress of binary metal-oxide resistive switching random access memory (RRAM) is reviewed. The physical mechanism, material properties, and electrical characteristics of a variety of binary metal-oxide RRAM are discussed, with a focus on the use of RRAM for nonvolatile memory application.
H.-S. Philip Wong +8 more
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In this paper, recent progress of binary metal-oxide resistive switching random access memory (RRAM) is reviewed. The physical mechanism, material properties, and electrical characteristics of a variety of binary metal-oxide RRAM are discussed, with a focus on the use of RRAM for nonvolatile memory application.
H.-S. Philip Wong +8 more
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Oxidation on Metal Oxide Surfaces
1968The redn. of transition metal oxides and of SnO2 + Sb2O3 by 1-butene and butadiene was investigated. A single parameter Qo, defined as the heat necessary to dissociate 0.5 O2 from the oxide, detd. the type of reaction. Starting from Q0 = 17 (MnO2) and proceeding to Q0 = 70 (SnO2), the redn. produces; CO2 -> (oxygenated products) -> butadiene ->
Simons, T.G.J. +3 more
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Synthesis of Superconducting Oxides and Oxide/Metal Composites by Oxidation of Metallic Precursors
MRS Proceedings, 1987ABSTRACTOne method for the synthesis of superconducting oxides is high temperature oxidation of a metallic alloy (a metallic precursor) that contains the metallic constituents of the oxide. In addition, a noble metal can be added to the precursor such that, after oxidation, a two phase, finely divided oxide/metal composite results.
Gregory J. Yurek +2 more
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Comments on ?parabolic oxidation of metals to metal deficit oxides?
Oxidation of Metals, 1972Two fundamental errors are pointed out in a recent paper by Bridges and Fassell Jr1. Both concern the application of the law of mass action to a heterogeneous equilibrium, the first in the case of the sorption equilibrium, the second for the external interfacial reaction.
P. Sarrazin, J. Besson
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Science, 2017
Catalysis The hydrogenation of carbon dioxide is a key step in the industrial production of methanol. Catalysts made from copper (Cu) and zinc oxide (ZnO) on alumina supports are often used. However, the actual active sites for this reaction—Zn-Cu bimetallic sites or ZnO-Cu interfacial sites—are debated. Kattel et al.
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Catalysis The hydrogenation of carbon dioxide is a key step in the industrial production of methanol. Catalysts made from copper (Cu) and zinc oxide (ZnO) on alumina supports are often used. However, the actual active sites for this reaction—Zn-Cu bimetallic sites or ZnO-Cu interfacial sites—are debated. Kattel et al.
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