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ChemInform Abstract EXAFS, XPS, and oxygen chemisorption results are reported for Ru/γ-Al2O3 catalysts prepared from Ru-acetylacetonate and reduction in hydrogen at 200, 300, or 400 rc C for 4 or 8 h. The results indicate a high degree of dispersion of the metal. It is suggested that anchoring of Ru to the support occurs via Run+-O bonds. Catalysts treated at 200 rc C are incompletely reduced, whereasfor those treated at 300 rc C for 4 h the formation of Ru clusters is essentially complete and no further modifications are observed r longer reduction times or higher temperatures.

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