Foreign Cooperating Institutions - Institute of Inorganic Chemistry ...

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Field of Scientific Interest The Department of Molten Systems deals with the investigation of liquids that can be characterized by the existence of columbic interactions at high temperatures. Basic physicochemical properties like phase equilibria, density, electric conductivity, viscosity, interfacial and surface tension are under the study together with the development of semi-empirical models for better understanding of the relations between the composition, properties and structure of inorganic melts. Preferentially, fluoride systems based on tantalum, niobium, titanium, tin and aluminium are the objects of the research. Ambition of the Department is the implementation of modern techniques, such as high temperature NMR and MAS NMR spectroscopy, high temperature neutron and synchrotron diffraction methods or secondary ion mass spectroscopy into the investigation of melts. . Rapid solidification processing is applied in order to prepare metastable phases with the structure close to that of the liquid phase. Applied research of the Department is connected with optimization of conditions for electrochemical aluminium production. In recent years circulations of impurities like phosphorus, iron, carbon, silicon and vanadium in the electrolyte for aluminium production and their distribution between aluminium, electrolyte, anode gases and graphite have been studied, with the aim to improve the efficiency of the production and quality of the produced aluminium. Projects and Cooperation Structure and solubility of niobium complexes: high temperature and high resolution solid state NMR study of the system KF-K2NbF7-Nb2O5 Project No. 18182 Duration: 2005 – 2006 Principal Investigator in Slovakia: Ing. F. Šimko, PhD. In Collaboration with Centre de Recherches Sur Les Materiaux a Haute Temperature, CNRS, 1D, Avenue de la recherche Scientifique 45071 Orleans, France The formation of oxofluoroaluminates and Si and V impurities behaviour in the system NaF-AlF3-Al2O3 VEGA Project 2/4071/04 Duration: 2004 – 2006 Principal Investigator: Ing. I. Nerád, CSc. Magnetostructural correlations in unconvential magnetic materials APVT Project No. APVT-20-005204 Duration: 2005 – 2007 Principal Investigator: Prof. RNDr. A. Feher, DrSc., University of P. J. Šafárika in Košice Principal Investigator in IIC: Ing. M. Boča, PhD. The physico-chemical and thermodynamic properties of the industrial molten fluoride systems on the base of aluminium, niobium and tantalum APVT Project No. APVT-51-008104 Duration: 2005 – 2007 58
Principal Investigator: Ing. M. Korenko, PhD. The study of the fluoride molten-salts system with the potential for industrial application. VEGA Project 2/6179/26 Duration: 2006 – 2008 Principal Investigator: Ing. M. Boča, PhD. The behaviour of impurities in industrial electrolytes for aluminium production. VEGA Project 2/7077/27 Duration: 2007 – 2009 Principal Investigator: Ing. F. Šimko, PhD. Study of molten fluoride systems interested for cooling systems in advanced high-temperature nuclear reactors. APVV Project No.SK-FR-0013/07 Duration: 2008 – 2009 Principal Investigator in Slovakia: Ing. F. Šimko, PhD. In Collaboration with Centre de Recherches Sur Les Materiaux a Haute Temperature, CNRS, 1D, Avenue de la recherche Scientifique 45071 Orleans, France Selected Publications ŠIMKO F., BESSADA C., RAKHMATULLIN A., DANĚK V., BOČA M.: Multinuclear High Temperature NMR Study of Na3AlF6-FeO and Na3AlF6-Fe2O3 melts, European Journal of Inorganic Chemistry, 4528 – 4532, 2006 ŠIMKO F., DANĚK V., STAŠ M.: Long-Term Material Balance of Iron in Aluminum Reduction Cells, Metallurgical and Materials Transactions A 37A, 731 – 738, 2006 KOSA L., MACKOVÁ I.: Determination of the Enthalpy of Fusion of K3TaF8 and K3TaOF6, Thermochimica Acta 447, 209 – 211, 2006 KORENKO M., ONDERCIN M.: Interfacial Tension Between Aluminium and Cryolite Melts during Electrolysis of the System Na3AlF6-AlF3 (NaF)-Al2O3, Journal of Applied Electrochemistry 36, 1347 – 1352, 2006 BOČA M., IVANOVÁ Z., KUCHARÍK M., CIBULKOVÁ J., VASILJEV R., CHRENKOVÁ M.: Density and Surface Tension of the System KF–K2TaF7–Ta2O5, Zeitschrift fur Physikalische Chemie 220, 1159 – 1180, 2006 NERÁD I., MIKŠÍKOVÁ E.: Thermochemical properties of the Fe-analogue of cryolite, Na3FeF6, Central European Journal of Chemistry 5, 508 – 515, 2007 59
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PREFACE This report covers a three-
Page 5:
CONTENT STRUCTURE OF THE INSTITUTE
Page 8 and 9:
INSTITUTE REPRESENTATIVES Prof. RND
Page 10 and 11: HIGHLIGHTS OF THE IIC SCIENCE The s
Page 12 and 13: Organoclays and their applications
Page 14 and 15: Utilization of Slovak bentonites in
Page 16 and 17: Low cost SiAlON from hydrosilicates
Page 18 and 19: High temperature liquids: Nanotubes
Page 20 and 21: Transparent armours with enhanced b
Page 22 and 23: oxide glasses and ceramic materials
Page 24 and 25: Projects of National Grant Agencies
Page 26 and 27: 3. SCIENTIFIC OUTPUT 24 2006 2007 2
Page 28 and 29: 6. LECTURES DELIVERED BY THE GUESTS
Page 30 and 31: International Symposium on Advanced
Page 32 and 33: In Institutions Abroad J. Bujdák:
Page 34 and 35: From left: M. Korenko, F. Šimko, B
Page 36 and 37: 9. DEFENDED PhD. THESIS 2006 Ján K
Page 38 and 39: 11. COOPERATION WITH INDUSTRY Glass
Page 40 and 41: 13. EVENTS The Open Door Day Within
Page 42 and 43: Researcher’s Night in the Europea
Page 45: IIC SAS DEPARTMENTS 43
Page 48 and 49: Field of Scientific Interest The De
Page 50 and 51: Selected Publications BALOG M., ŠA
Page 52 and 53: Electron microscope EVO ® 40 Serie
Page 54 and 55: Field of Scientific Interest Minera
Page 56 and 57: Sciential and technological transfe
Page 58 and 59: Selected Equipment UV-VIS spectroph
Page 62 and 63: BOČA M., DANIELIK V., IVANOVÁ Z.,
Page 65 and 66: DEPARTMENT OF THEORETICAL CHEMISTRY
Page 67 and 68: Duration: 01/2003 - 12/2006 Princip
Page 69: • Forschungszentrum Karlsruhe Gmb
Page 72 and 73: Field of Scientific Interest The re
Page 74 and 75: SEDLÁČEK J., GALUSEK D., ŠVANČ
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