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High surface area zirconia and MgO–ZrO 2 composites are prepared and used as supports of Pd catalysts. Amorphous zirconia is prepared via precipitation and digestion of zirconium oxyhydroxide in hydrazine. Composite MgO–ZrO 2 oxides are obtained by (i) grafting of zirconium acetylacetonate on MgO and (ii) coprecipitation of a mixed gel of zirconium oxyhydroxide and magnesium hydroxide...
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