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Suggest pagesPalladium on carbon
Palladium on carbon, often referred to as Pd/C, is a form of palladium used for catalysis. It is usually used for catalytic hydrogenations in organic chemistry. When the metal is distributed over finely-divided carbon, the surface area is larger and the catalyst is more reactive.
Palladium-on-carbon has also been used as the palladium(0) catalyst in the Suzuki reaction, Stille reaction[1], and related reactions.
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[edit] Preparation
Palladium on carbon is commercially available, with a CAS number of 7440-05-3. It can also be prepared in the laboratory. In a typical procedure, palladium(II) chloride and hydrochloric acid are added to sodium acetate trihydrate. Then nitric acid-washed activated carbon is added and the mixture is hydrogenated. This composite is then vacuum filtered and dried in a vacuum desiccator over a desiccant such as potassium hydroxide or calcium chloride. The palladium loading is typically between 5% and 10%.[2]
[edit] Safety
Palladium on carbon is pyrophoric under certain conditions[citation needed].
[edit] References
- ^ Liebeskind, L. S.; Peña-Cabrera, E.Organic Syntheses, Coll. Vol. 10, p.9 (2004); Vol. 77, p.135 (2000). (Article)
- ^ Ralph Mozingo (1955), "Palladium Catalysts", Org. Synth., http://www.orgsyn.org/orgsyn/orgsyn/prepContent.asp?prep=cv3p0685; Coll. Vol. 3: 685
