Study of the preparation of ruthenia based catalytic materials by heating their precursors

0106544 - UACH-T 20043030 RIV NL eng J - Článek v odborném periodiku
Balek, V. - Labhsetwar, NK. - Mitsuhashi, T. - Haneda, H. - Šubrt, Jan - Zeleňák, V.
Study of the preparation of ruthenia based catalytic materials by heating their precursors.
[Příprava katalytických materiálů na bázi oxidů ruthenia zahříváním prekursorů.]
Journal of Materials Science. Roč. 39, č. 9 (2004), s. 3095-3103. ISSN 0022-2461. E-ISSN 1573-4803
Grant CEP: GA MŠMT LN00A028; GA ČR GA104/00/1046; GA MŠMT ME 497
Výzkumný záměr: CEZ:AV0Z4032918
Klíčová slova: emanation thermal-analysis * microstructure chances * oxidation
Kód oboru RIV: CA - Anorganická chemie
Impakt faktor: 0.864, rok: 2004

Thermal behaviour of hydrous ruthenia (RuO2.nH(2)O) and ruthenia containing 10% titania ((RuO2)(0.9)-(TiO2)(0.1).nH(2)O) was characterised on heating in air by emanation thermal analysis (ETA), thermogravimetry (TG), differential thermal analysis (DTA) and evolved gas analysis (EGA). The anhydrous ruthenia and ruthenia containing 10% titania samples were prepared by heating their hydrous precursors at 500degreesC in air. The temperature intervals of the samples dehydration and crystallisation were determined. XRD, TEM and surface area measurements were also used for the characterisation of the samples. The ETA results, evaluated by a mathematical model, brought about new information about surface area and microstructure development of the intermediate products of the oxides under in situ conditions of the heating in air. A good agreement between ETA and the results of other methods was obtained. The NOx reduction by CO was used to test the catalytic properties of these samples.

Bylo popsáno chování oxidů ruthenia a oxidu ruthenia s obsahem 10% TiO2 při zahřívání na vzduchu pomocí Emanační termické analýzy (ETA), thermogravimetrie (TG), diferenční termické analýzy (DTA) a analýzy uvolněných plynů (EGA).
Trvalý link: http://hdl.handle.net/11104/0013722