Investigation of crystallization stages in the ternary oxide systems by means of computer model

2014 ◽  
Author(s):  
V. Lutsyk ◽  
A. Zelenaya
Keyword(s):  
Computer Model ◽  
Ternary Oxide ◽  
Oxide Systems

Crystallization Paths and Microstructures in Ternary Oxide Systems with Stoichiometric Compounds

2013 ◽  
Vol 200 ◽  
pp. 73-78 ◽  
Author(s):  
Vasily Lutsyk ◽  
Anna Zelenaya
Keyword(s):  
Mass Balance ◽  
Computer Model ◽  
Model Simulation ◽  
Ternary Oxide ◽  
Oxide Systems

The problems of computer model simulation of CаO-SiO2-Al2O3 system are considered. The crystallization scheme and sets of microstructure elements are analyzed for the fields of liquidus CaO, 3CaO*SiO2, 3CaO*Al2O3. The concentration fields both with individual set of microstructure elements and the fields without the unique crystallization scheme and microstructure set were found. The crystallization stages for given compositions are illustrated by the mass balance diagrams.

Reference Book on the Oxide Systems Space Diagrams as a Tool for Data Mining

2015 ◽  
Vol 230 ◽  
pp. 51-54 ◽  
Author(s):  
V.I. Lutsyk ◽  
V.P. Vorob'eva ◽  
Anna Zelenaya
Keyword(s):  
Data Mining ◽  
Phase Diagram ◽  
Phase Diagrams ◽  
Computer Model ◽  
Computer Models ◽  
Ternary Oxide ◽  
Reference Book ◽  
Mass Balances ◽  
Oxide Systems

The Reference Book of Ternary Oxide Systems phase diagrams computer models is presented. Its computer models of T-x-y diagrams give a possibility to calculate the mass balances at any temperature, to observe crystallization history and the process of microstructure forming at different crystallization stages. The investigation of concentration fields with the different phase constituents on the T-x-y diagram projection by means of its computer model is considered. Phase diagram of CaO-SiO2-Al2O3system is used as an example.

Representation of phase equilibria in ternary oxide systems

2007 ◽  
Vol 71 (8) ◽  
pp. 1183-1186 ◽  
Author(s):  
L. B. Vedmid’ ◽  
V. F. Balakirev ◽  
A. M. Yankin ◽  
Yu. V. Golikov
Keyword(s):  
Phase Equilibria ◽  
Ternary Oxide ◽  
Oxide Systems

scholarly journals Synergistic Degradation of Dye Wastewaters Using Binary or Ternary Oxide Systems with Immobilized Laccase

Catalysts ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 402 ◽  
Author(s):  
Katarzyna Antecka ◽  
Jakub Zdarta ◽  
Katarzyna Siwińska-Stefańska ◽  
Grzegorz Sztuk ◽  
Ewelina Jankowska ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
High Efficiency ◽  
Dye Degradation ◽  
Oxygen Demand ◽  
Molar Ratio ◽  
Process Conditions ◽  
Ternary Oxide ◽  
Reactive Black 5 ◽  
Oxide Systems ◽  
Alizarin Red

In recent years, groundwater contamination caused by dyes has become an important problem. They enter into wastewater as a result of the textile, automotive, or cosmetics industries. For this reason, new methods are being sought, which would aid at the removal of dye impurities with high efficiency and also would be relatively cheap. In the presented study synthesized TiO2-ZrO2 (with TiO2:ZrO2 molar ratio of 8:2) and TiO2-ZrO2-SiO2 (with TiO2:ZrO2:SiO2 molar ratio of 8:1:1) oxide materials were used as supports for enzyme immobilization. Effective synthesis of the carriers was confirmed by results of scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), low-temperature nitrogen sorption and Fourier transform infrared spectroscopy (FTIR). The materials achieve high immobilization efficiency of the laccases from Trametes versicolor (83% and 96% for TiO2-ZrO2-laccase and TiO2-ZrO2-SiO2-laccase, respectively). The effect of selected dye concentrations, pH, temperature, and reusability were also tested. The obtained results showed that after removal of textile dyes, such as Alizarin Red S (ARS), Remazol Brilliant Blue R (RBBR), and Reactive Black 5 (RB5), under optimal process conditions, which were pH 5 and 25 °C, from dye solution of 5 mg/L degradation efficiency reached 100%, 91%, and 77%, respectively, suggesting synergistic mechanism of degradation by simultaneous sorption and catalytic action. Finally, reduction of chemical oxygen demand (COD) of the solution after treatment indicated lower mixture toxicity and effective dye degradation.

scholarly journals Comparison between Bioactive Sol-Gel and Melt-Derived Glasses/Glass-Ceramics Based on the Multicomponent SiO2–P2O5–CaO–MgO–Na2O–K2O System

Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 540 ◽  
Author(s):  
Elisa Fiume ◽  
Carla Migneco ◽  
Enrica Verné ◽  
Francesco Baino
Keyword(s):  
Glass Ceramic ◽  
Bone Repair ◽  
Sol Gel ◽  
Glass Ceramics ◽  
Textural Properties ◽  
High Specific Surface Area ◽  
Ternary Oxide ◽  
Nominal Composition ◽  
Oxide Systems

Bioactive sol-gel glasses are attractive biomaterials from both technological and functional viewpoints as they require lower processing temperatures compared to their melt-derived counterparts and exhibit a high specific surface area due to inherent nanoporosity. However, most of these materials are based on relatively simple binary or ternary oxide systems since the synthesis of multicomponent glasses via sol-gel still is a challenge. This work reports for the first time the production and characterization of sol-gel materials based on a six-oxide basic system (SiO2–P2O5–CaO–MgO–Na2O–K2O). It was shown that calcination played a role in inducing the formation of crystalline phases, thus generating glass-ceramic materials. The thermal, microstructural and textural properties, as well as the in vitro bioactivity, of these sol-gel materials were assessed and compared to those of the melt-derived counterpart glass with the same nominal composition. In spite of their glass-ceramic nature, these materials retained an excellent apatite-forming ability, which is key in bone repair applications.

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