| Autor: |
Dabo, Pierre, Cyr, André, Lessard, Jean, Brossard, Louis, Ménard, Hugues |
| Zdroj: |
Canadian Journal of Chemistry; July 1999, Vol. 77 Issue: 7 p1225-1229, 5p |
| Abstrakt: |
Electrodes consisting of particles of a transition metal entrapped and dispersed in a reticulated vitreous carbon (RVC) matrix were prepared in situ by stirring the particles in the presence of an RVC cathode. Such electrodes were used for the electrocatalytic hydrogenolysis (ECHsis) of 4-phenoxyphenol, a compound representative of the 4-O-5 type linkage in lignins. The electrolyses were carried out under galvanostatic control in aqueous 1 M NaOH. Raney nickel, nickel boride, and transition metals supported on activated charcoal or alumina were used as catalytic powders. The extent and efficiency of the ECHsis of 4-phenoxyphenol was found to depend on the catalyst and on the temperature.Key words: electrocatalytic hydrogenation, electrocatalytic hydrogenolysis, 4-phenoxyphenol, Raney nickel, palladium on charcoal, palladium on alumina. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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