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palladium 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 catalyst support, 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,〔Liebeskind, L. S.; Peña-Cabrera, E.''Organic Syntheses'', Coll. Vol. 10, p.9 (2004); Vol. 77, p.135 (2000). ((Article ))〕 and related reactions.
==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, a hydrochloric acid solution of palladium(II) chloride is treated with sodium acetate trihydrate followed by nitric acid-washed activated carbon. The palladium loading is typically between 5% and 10%.
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