Palladium on carbon

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 the surface area is larger and the catalyst more reactive.

Palladium-on-carbon has recently 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). ( [http://www.orgsyn.org/orgsyn/prep.asp?prep=v77p0135 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, palladium(II) chloride and hydrochloric acid are added to nitric acid-washed activated carbon. This composite is then dried, and the palladium(II) is reduced to palladium(0) with hydrogen gas, and washed. The palladium loading is typically between 5% and 10%. [OrgSynth | author = Ralph Mozingo | title = Palladium Catalysts | collvol = 3 | collvolpages = 685 | prep = cv3p0685 | year = 1955]

afety

Palladium on carbon is pyrophoric under certain conditions Fact|date=November 2007.

References

ee also

*Lindlar catalyst
*Platinum on carbon
*Raney nickel


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