Preparation and Characterization of ZrO2 Stabilized with Ru(IV) and La(III).
BROWN UNIV PROVIDENCE RI DEPT OF CHEMISTRY
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Ruthenium oxide, dispersed on oxide supports such as TiO2, SiO2, and ZrO2, are known to shown Fischer-Tropsch activity. Little is known about the catalyst-support interactions which must play an important role in the catalytic activity of dispersed ruthenium oxide. The strength of catalytic support interaction may be directly related to the stability of the dispersed catalyst towards reduction. Hence, solid solutions of RuIVZrO2 have been prepared, and the resulting stability of RuIV toward reduction with hydrogen was measured and compared with that of bulk RuO2. The observed increase in stability toward reduction was related to interaction between RuO2 and ZrO2. The introduction of a small amount of La2O3 with the ZrO2 produced further stabilization of the RuIV toward reduction.
- Inorganic Chemistry