Topic
Mixed oxide
About: Mixed oxide is a research topic. Over the lifetime, 5224 publications have been published within this topic receiving 115567 citations.
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TL;DR: In this paper, NaCl-modified VCexCu1-x mixed oxide catalysts were found to be effective for propylene epoxidation using molecular oxygen as the oxidant.
74 citations
TL;DR: In this paper, a series of catalysts with BAl ratios ranging from 0 to 1 were prepared and characterized with respect to surface area, pore volume, and thermal stability, and the strength and concentration of acid sites present on the surface of the aluminum borates were determined using adsorbed indicators.
74 citations
Patent•
23 Mar 2005
TL;DR: In this paper, a nitrogen oxide storage material based on storage compounds of elements selected from the group consisting of magnesium, calcium, strontium, barium, the alkali metals, the rare earth metals and mixtures thereof is described.
Abstract: A nitrogen oxide storage material which is based on storage compounds of elements selected from the group consisting of magnesium, calcium, strontium, barium, the alkali metals, the rare earth metals and mixtures thereof and has a homogeneous magnesium-aluminium mixed oxide doped with cerium oxide as support material for the storage compounds is described. Nitrogen oxide storage catalysts using this storage material display a broad working range, a high storage efficiency and good ageing resistance.
74 citations
TL;DR: In this article, the effect of preparation method on MnO · δ − δ -CeO2 mixed oxide catalysts for methane combustion at low temperature was investigated by means of BET, XRD, XPs, XPS, H2-TPR techniques and methane oxidation reaction.
Abstract: The effect of preparation method on MnO
x
–CeO2 mixed oxide catalysts for methane combustion at low temperature was investigated by means of BET, XRD, XPS, H2-TPR techniques and methane oxidation reaction. The catalysts were prepared by the conventional coprecipitation, plasma and modified coprecipitation methods, respectively. It was found that the catalyst prepared by modified coprecipitation was the most active, over which methane conversion reached 90% at a temperature as low as 390 °C. The XRD results showed the preparation methods had no effect on the solid solution structure of MnO
x
–CeO2 catalysts. More Mn4+ and richer lattice oxygen were found on the surface of the modified coprecipitation prepared catalyst with the help of XPS analysis, and its reduction and BET surface area were remarkably promoted. These factors could be responsible for its higher activity for methane combustion at low temperature.
74 citations
TL;DR: In this paper, the main structural and reactivity properties of mixed oxide systems containing vanadium oxide as the key component in catalysts for gas-phase reactions, mainly oxidations are analyzed.
74 citations