Lactose oxidation over palladium catalysts supported on active carbons and on carbon nanofibres

Anton V. Tokarev, Elena V. Murzina, Kari Eränen, Heidi Markus, Arie J. Plomp, Johannes H. Bitter, Päivi Mäki-Arvela, Dmitry Yu Murzin

Tutkimustuotos: LehtiartikkeliArtikkeliTieteellinenvertaisarvioitu

12 Sitaatiot (Scopus)

Abstrakti

Liquid-phase lactose oxidation was investigated over supported Pd/C and Pd-carbon nanofibre catalysts, which were characterized by several methods. A complex relationship between catalyst activity and catalyst acidity was established, i.e. optimum catalyst acidity resulted in the highest activity in lactose oxidation. In-situ catalyst potential measurements during lactose oxidation gave information about the extent of accumulation of oxygen on the metal surface. These results could be correlated with catalyst deactivation, which was extensive over the most acidic catalysts at low reaction temperatures. Selectivity for the desired product, lactobionic acid, was a maximum of approximately 83% at 93% conversion. The main side-product was lactulose formed via isomerisation of lactose. Lower selectivity toward lactobionic acid was obtained when the rate of oxidation of lactose was low.

AlkuperäiskieliEnglanti
Sivut155-174
Sivumäärä20
JulkaisuResearch on Chemical Intermediates
Vuosikerta35
Numero2
DOI - pysyväislinkit
TilaJulkaistu - helmikuuta 2009
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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