Synergetic effect of platinum or palladium on gold catalyst in the selective oxidation of D-sorbitol
Articolo
Data di Pubblicazione:
2005
Citazione:
Synergetic effect of platinum or palladium on gold catalyst in the selective oxidation of D-sorbitol / N. Dimitratos, F. Porta, L. Prati, A. Villa. - In: CATALYSIS LETTERS. - ISSN 1011-372X. - 99:3-4(2005), pp. 181-185.
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.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Bimetallic catalyst; Gold/palladium; Gold/platinum; Oxidation of polyols; Sorbitol oxidation
Elenco autori:
N. Dimitratos, F. Porta, L. Prati, A. Villa
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