Journal ArticleDOI
Thermal behaviour of cobaltic and cobaltous oxides as influenced by doping with some alkali metal oxides
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TLDR
The role of Na2O-and Li2Odoping on the thermal decomposition of Co3O4 to CoO and the re-oxidation of cobaltous to cobaltic oxide has been investigated using DTA, with controlled rates of heating and cooling, IR and X-ray diffraction spectrometry techniques.About:
This article is published in Thermochimica Acta.The article was published on 1983-11-15. It has received 27 citations till now. The article focuses on the topics: Lithium oxide & Oxide.read more
Citations
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Journal ArticleDOI
Alkali metal-doped cobalt oxide catalysts for NO decomposition
TL;DR: In this paper, the effect of addition of alkali metals was investigated on the catalytic activity of cobalt oxide (Co3O4) for the direct decomposition of NO.
Journal ArticleDOI
Exploitation of thermochemical cycles based on solid oxide redox systems for thermochemical storage of solar heat. Part 1: Testing of cobalt oxide-based powders
TL;DR: In this paper, the temperature range for cyclic reduction-oxidation and optimize the process parameters for maximum reduction and reoxidation extent was determined and the results showed that under proper operating conditions Co3O4 powders exhibited long-term (30 cycles), complete and reproducible cyclic reducing/oxidation performance within a temperature range 800-1000°C. Complete reoxification was achieved within reasonable times by performing the two reactions at close temperatures and by controlling the heating/cooling rate.
Journal ArticleDOI
Thermochemical energy storage at high temperature via redox cycles of Mn and Co oxides: Pure oxides versus mixed ones
Alfonso J. Carrillo,Javier Moya,Alicia Bayon,Prabhas Jana,Víctor A. de la Peña O’Shea,Manuel Romero,José Gonzalez-Aguilar,David P. Serrano,David P. Serrano,Patricia Pizarro,Patricia Pizarro,Juan M. Coronado +11 more
TL;DR: In this article, the capacity of both pure (Mn2O3 and Co3O4) and mixed oxides (mn3−xCoxO4), as well as the corresponding pure oxides, were evaluated by thermogravimetrical analysis.
Journal ArticleDOI
NO decomposition over sodium-promoted cobalt oxide
TL;DR: The catalytic decomposition of NO over cobalt oxide was significantly enhanced by the addition of alkali promoters, and the promotional effect was the highest with Na and the optimal Na/Co atomic ratio was 0.015.
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Solid–solid interaction between ferric oxide and manganese carbonate as influenced by lithium oxide doping
N.M. Deraz,Gamil A. El-Shobaky +1 more
TL;DR: In this article, solid-solid interaction between pure and lithia-doped manganese and ferric oxides has been investigated using DTA and XRD techniques using a DTA-XRD technique.
References
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Journal ArticleDOI
Effect of Li2O-doping on the thermal stability of cobaltic oxide
TL;DR: In this article, the influence of Li2O-doping on the thermal stability of Co3O4 was studied using DTA, TG, DTG and X-ray diffraction techniques.
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Die Selbstdiffusion vonFein Magnetit im Zusammenhang mit der Elektronenverteilung inFe3O4undCo3O4
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Effects of lithium doping on the catalytic activity of Co3O4 in CO oxidation
TL;DR: In this paper, the catalytic activity of pure and lithium-doped Co3O4 catalysts was investigated at various temperatures between 95 and 250 °C in an atmosphere containing 2 parts CO to 1 part oxygen at a pressure of 2 Torr.
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Effects of stoichiometric composition and surface characteristics on the catalytic activity of CoO catalyst
TL;DR: In this article, the catalytic activity of various samples in the oxidation of CO at 110 and 170 °C was found to be dependent on the specific surface area, the pore size and the degree of deviation from stoichiometric composition.
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Preparation of cobalt oxide catalysts and their activity for CO oxidation at low concentration
D. Pope,D.S. Walker,R.L. Moss +2 more
TL;DR: In this paper, a thermogravimetric study of the decomposition of cobalt salts together with surface area measurements indicated the best choice of starting compound and optimum decomposition temperatures for the preparation of high-area Co3O4 powder catalysts.