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 carbon-COA Palladium-on-carbon has also been used as the palladium(0) catalyst in the Suzuki reaction, Stille reaction,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 acidare 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]

钯碳Palladium carbon,Pd/C)催化剂是一种用于有机合成中的催化氢化的催化剂。CAS号7440-05-3。一般为黑色粉末或是含有0.5%~30%钯的小球,不溶于所有的有机溶剂和酸性溶液。

钯碳能够催化氢化烯、炔、酮、腈、亚胺、叠氮化物、硝基化合物、苯环以及杂环芳香化合物。也可用作Suzuki反应、Stille反应[1]和其他相关反应中的钯(0)催化剂。

钯碳制备

各大试剂公司有售。 实验室中,也可通过氯化钯(Ⅱ)和盐酸与用硝酸洗净的活性炭作用,然后干燥、用氢气将钯(Ⅱ)还原为钯(0)、再经洗涤制备。[2]

钯碳注意事项

在空气中密闭存放时很安全,但要远离溶剂和含硫、磷的化合物。在溶剂存在下,可能起火。在有机溶剂中使用时必须在氮气保护下进行。过滤时滤渣不能进行干燥。[

Safety

Palladium on carbon is usually sold as a paste (water).Palladium carbon MSDS


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