Oxidation behavior of Ru/TiO2 and metallic Ru fine particles on heating in air

0163469 - UACH-T 20033017 RIV US eng J - Článek v odborném periodiku
Balek, V. - Mitsuhashi, T. - Watanabe, A. - Zeleňák, V. - Šubrt, Jan - Bezdička, Petr - Boháček, Jaroslav
Oxidation behavior of Ru/TiO2 and metallic Ru fine particles on heating in air.
Journal of Colloid and Interface Science. Roč. 260, č. 1 (2003), s. 70-74. ISSN 0021-9797. E-ISSN 1095-7103
Grant CEP: GA MŠMT LN00A028; GA ČR GA104/00/1046; GA MŠMT ME 180; GA MŠMT ME 497
Výzkumný záměr: CEZ:AV0Z4032918
Klíčová slova: Ru/TiO2 particles * metallic Ru particles * oxidation
Kód oboru RIV: CA - Anorganická chemie
Impakt faktor: 1.582, rok: 2003

Thermogravimetry (TG) and differential thermal analysis (DTA) were used to investigate the oxidation behavior of Ru/TiO2 and metallic Ru fine particles during heating in air in the range 20-1000 degreesC. Temperature ranges of the oxidation for two samples of Ru/TiO2 with the compositions (92 wt% Ru, 8 wt% TiO2) and (75 wt% Ru, 25 wt% TiO2) and for pure metallic Ru fine particle agglomerates were determined. It was assumed that after the partial oxidation of Ru in the sample containing 75 wt% Ru and 25 wt% TiO2 and in the pure metallic Ru a diffusion barrier was formed, preventing further oxidation of Ru in Ru/RuO2 and Ru/RuO2/TiO2 matrices. XRD and TEM were used for the sample characterization.
Trvalý link: http://hdl.handle.net/11104/0060710