Gold Based Bimetallic Catalysts for Liquid Phase Applications
نویسندگان
چکیده
The liquid phase oxidation of D-Sorbitol has been carried out in water using oxygen as the oxidant in the presence of gold based catalyst. Au/C, Pt/C and Pd/C monometallic systems were compared to bimetallic Au/Pd and Au/Pt on carbon. A strong synergistic effect was observed producing a significant increase of reaction rate. Moreover, the addition of gold to Pd or Pt catalyst produced a system more resistant to oxygen poisoning allowing it to work also under a moderate pressure. The effect of varying the molar ratio of the metals has also been studied. Gold Bulletin 2005 • 38/2 73 Scheme 1 COOH H C OH H C OH H C OH CH2OH D-Gluconic acid D-Glucaric acid D-Sorbitol HO C H
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