A5077742738- Catalysis and Oxidation Reactions
- Catalytic Processes in Materials Science
- Bauxite Residue and Utilization
- Pigment Synthesis and Properties
- Material Properties and Applications
- Magnesium Oxide Properties and Applications
- Structural mechanics and materials
Co–Mg catalysts for methane combustion were synthesized and studied, revealing the transformation of MgCo2O4 spinel into a CoO–MgO solid solution with oxygen release from lattice as calcination temperature increased. Repeated heat treatment calcined at lower temperatures led to regeneration segregation phase. A TPR samples showed presence two characteristic peaks, first which relates transition Co3+Oh Co2+Oh structure CoO, second reduction CoO Co°. The peak was observed 540–620 °C below...
In order to establish the formation patterns of Co–Mg oxide system, samples with different Co:Mg ratios and heat treatment temperatures were synthesized studied. Study sam-ples confirmed phase transition MgxCo2–xO4 spinels into corresponding solid solutions at 800–900 °C. The similarity for compositions is shown. rock-salt in low-temperature an anion-modified paracrystalline that forms a “true” solution only upon spinel decomposition....
In order to establish the formation patterns of Co–Mg oxide system, samples with different Co:Mg ratios and heat treatment temperatures were synthesized studied. A study confirmed phase transition MgxCo2–xO4 spinels into corresponding solid solutions at 800–900 °C. The similarity for compositions is shown. rocksalt in low-temperature an anion-modified paracrystalline that forms a “true” solution only upon spinel decomposition. TPR profiles decomposed Co3O4 show surface peaks wide peak...
A search and analysis of thermodynamic data on the phases formed during precipitation aluminium hydroxide from acidic salts’ solutions was carried out in order to further study equilibrium relations hydroxide. The literature properties various hydroxides modifications obtained by low-temperature calorimetry revealed a contradiction calorimetric boehmite, which is explained difference thermochemical between crystalline gelatinous boehmite (boehmite pseudoboehmite). Saturation indices were...
Based on published data and experimental studies of formation regularities aluminium hydroxide, a reproducible technique for synthesis bayerite-structured hydroxide by precipitation was developed as part the creation preparation technology chromia-alumina dehydrogenation catalyst. A possibility high purity bayerite (above 90 wt.%) with different particle sizes depending conditions shown. correlation between dispersion sediments temperature shown, optimal – which allows obtaining sufficiently...