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PALLADIUM CHARCOAL ACTIVATED 10%pd
Pd/C is known to have been widely used for hydrogenation, hydrogenolysis and hydrodechlorination. However, its use as a catalyst for carbon–carbon bond formation is quite recent
Supported Pd catalysts are particularly important for industrial hydrogenation reactions, including fine chemicals synthesis. (1−3) Palladium is considered the most selective among the platinum metals, as hydrogenation is much faster than dehydrogenation to undesired carbonaceous species.
Pd/C, a heterogeneous catalyst, is mainly used for the catalytic hydrogenation. This method gives few side reactions and Pd/C is recoverable and reusable after the reaction. It is widely used because the reduction is able to be carried out efficiently various functional groups under mild neutral conditions.
The reaction proceeds Pd/C-dose-dependently, and 10 mol% of 10% Pd/C was found to be required to complete the reaction within 3 h.
Palladium on charcoal (Pd/C) has lots of salient merits
(i) it is a cheap and commercial source of palladium,
(ii) it shows efficient catalytic activity even without ligands,
(iii) as a heterogeneous catalyst it is easily recycled many times by simple filtration, and
(iv) it is applicable to a great number of reactions and substrates, although it is eventually less efficient than homogeneous Pd catalysts containing some sophisticated ligands.