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  • 1
    Electronic Resource
    Electronic Resource
    Anomalies in Heat Capacity Measurements of RuO2-TiO2 System (2000)
    Springer
    Journal of thermal analysis and calorimetry 60 (2000), S. 683-689 
    Details
    ISSN: 1572-8943
    Keywords: DSC ; heat capacity ; mixed oxide TiO2-RuO2 ; RuO2 ; TiO2
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract DSC was used for heat capacity measurements of pure RuO2 in the temperature range from 300 to 1170 K of solid solutions corresponding to the compositions of (Ti1−x Rux )O2 (x ≤0.15 and x ≥0.85) and in the temperature range from 300 to 1550 K of pure TiO2. The analysis of experimental data obtained within ±2% of accuracy has shown that the characteristic temperatures representing the harmonic lattice vibrations do not strongly depend on the chemical composition x . It was demonstrated that non-harmonic heat capacity is strongly correlated to x. The existence of additional excess heat capacity was observed with the mixed oxide solid solution samples of low Ru content and explained by the defect formation model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1010177306503
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Emanation Thermal Analysis of Precursors for Ruthenia-based Materials (2000)
    Springer
    Journal of thermal analysis and calorimetry 60 (2000), S. 691-698 
    Details
    ISSN: 1572-8943
    Keywords: DTA ; ETA ; hydrous ruthenia ; hydrous ruthenia-titania ; RuO2 ; (RuO2)0.9-(TiO2)0.1 ; TG ; X-ray diffraction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Emanation Thermal Analysis (ETA) was used to characterize microstructure changes of hydrous ruthenia and hydrous ruthenia-titania as precursors for preparation of RuO2 and (RuO2)0.9-(TiO2)0.l by heating in the temperature range of 20–600°C in argon. A good agreement was found between ETA, TG and DTA results, X-ray diffraction patterns and surface area measurements of intermediate products of the thermal treatment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1010129407412
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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