| abstract |
Supported palladium catalysts with a palladium content of 0.001 to 2% by weight, in which the palladium, essentially in the absence of promoter metals, is present as a shell on the support in a layer thickness of less than 5000 nm, in which the palladium is passed through as a sol Impregnation onto a carrier or by spraying onto a heated carrier and their use for the hydrogenation of acetylenes and dienes. |