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Synergetic effect of platinum or palladium on gold catalyst in the selective oxidation of D-sorbitol

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Abstract

Monometallic Au, Pt and Pd on carbon catalysts show poor activity in the liquid phase oxidation of D-sorbitol to gluconic/gulonic acids. However, by using bimetallic based catalysts (Au–Pt or Au–Pd) a great enhancement in the activity has been observed with respect to all the monometallic catalysts tested probably due to a synergetic effect between Au and Pt or Pd. In fact physical mixture of monometallic catalysts presented poor activity. Bimetallic showed a resistance to poisoning by dioxygen and by reaction products as high as gold monometallic catalyst, but also an improved selectivity toward monooxidation with respect to monometallic.

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Authors and Affiliations

  1. Dipartimento di Chimica Inorganica Metallorganica e Analitica e INSTM Unit, Centre of Excellence CIMAINA, Auricat Programme Università di Milano, via Venezian 21, 20133, Milano, Italy

    Nikolaos Dimitratos, Francesca Porta, Laura Prati & Alberto Villa

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  1. Nikolaos Dimitratos
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  2. Francesca Porta
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  3. Laura Prati
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  4. Alberto Villa
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Correspondence to Laura Prati.

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Dimitratos, N., Porta, F., Prati, L. et al. Synergetic effect of platinum or palladium on gold catalyst in the selective oxidation of D-sorbitol. Catal Lett 99, 181–185 (2005). https://doi.org/10.1007/s10562-005-2114-8

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  • DOI: https://doi.org/10.1007/s10562-005-2114-8

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