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Emanation thermal analysis study of the preparation of ruthenia-titania-based finely dispersed powders
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SYSNO ASEP 0163381 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Ostatní články Název Emanation thermal analysis study of the preparation of ruthenia-titania-based finely dispersed powders Tvůrce(i) Balek, V. (CZ)
Mitsuhashi, T. (CZ)
Zeleňák, V. (CZ)
Večerníková, Eva (UACH-T) SAI
Šubrt, Jan (UACH-T) SAI, RID
Haneda, H. (JP)
Bezdička, Petr (UACH-T) SAI, RID, ORCIDZdroj.dok. Journal of Colloid and Interface Science. - : Elsevier - ISSN 0021-9797
Roč. 248, č. 1 (2002), s. 47-53Poč.str. 7 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova emanation thermal analysis ; TiO2 ; RuO2 Vědní obor RIV CA - Anorganická chemie CEZ AV0Z4032918 - UACH-T Anotace Emanation thermal analysis (ETA), thermogravimetry (TG), differential thermal analysis (DTA), X-ray diffraction analysis (XRD), and transmission electron microscopy (TEM) were used for the characterization of thermal behavior of hydrous oxides (RuO2)(x)-(TiO2)(1-x) (.) nH(2)O and dehydrated oxides (RuO2)(x)-(TiO2)(1-x), respectively (x =1, 0.9, and 0.7) on heating in argon and argon + 10% hydrogen, respectively. The samples were heated in the range 20-600degreesC at the constant heating rate 6 K/min. From the TG and DTA results the temperature intervals of dehydration and/or reduction of ruthenium dioxide into Ru metal were determined. ETA (based on the measurement of radon previously incorporated into the sample) brought about the information about surface area development and microstructure changes in the near surface layers up to 80 mm under in situ conditions of the heating. The temperature intervals of the annealing of near surface and structure defects serving as diffusion paths for radon were determined from the ETA results. Pracoviště Ústav anorganické chemie Kontakt Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Rok sběru 2003
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