| Autor: |
Finashina, E.D., Kramareva, N.V., Kustov, L.M. |
| Zdroj: |
Macromolecular Symposia; November 2003, Vol. 204 Issue: 1 p205-218, 14p |
| Abstrakt: |
L‐Adrenaline and 3,4‐dihydroxyphenylalanine (dopa) oxidation by molecular oxygen in the presence of the Co(II) complex of bis(salicylideneethylene diamine) (CoSalen) immobilized on unmodified chitosan and chitosan modified by 4‐pyridinecarboxaldehyde is studied in aqueous solutions under mild conditions. The catalysts prepared are selective with respect to oxidation of the chosen substrates. Preparation of binary composite egg‐shell systems, with a thin film of low‐loaded CoSalen‐chitosan supported on macroporous SiO2makes it possible to increase sufficiently the specific surface area and the efficiency of the catalyst. |
| Databáze: |
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