Liquid Phase Oxidation of Benzyl Alcohol with Oxygen Using Ruthenium Containing Polyoxomolybdate

Abstract

Catalytic features of ruthenium-molybdenum polyoxometalate having a composition of [Ru₂Mo₁₄O₅₀]¹⁰⁻ or [Ru₂Mo₁₄O₅₂]¹⁴⁻ (Ru₂Mo₁₄) were evaluated using liquid-phase selective oxidation of benzyl alcohol with oxygen. Ru₂Mo₁₄ catalyst supported on titania support chemically modified with silane coupling agent that has amino groups (Ru₂Mo₁₄/DAPS-TiO₂) exhibited much higher catalytic activity than other Ru₂Mo₁₄ catalysts unsupported and supported on unmodified titania. Ru₂Mo₁₄/DAPS-TiO₂ exhibited larger turnover frequency than representative polyoxometalates supported on DAPS-TiO₂.