Resistance of palladium complex hydrogenation catalysts with nitrogen-containing ligands to attack by catalytic poisons

• 1.

  1. Supported palladium complex catalysts for selective hydrogenation of dienes and acetylenes, containing higher aliphatic amines as ligands, possess comparatively high resistance to attack by different catalytic poisons.

• 2.

  2. On the basis of the data obtained, the inhibitors investigated can be placed in the following order of strength of poisoning: $\text{CO}\text{≫}\text{RSH}\text{>}\text{R}{}_2\text{S}\text{>}\text{PPh}{}_3\text{⋟}\text{thiophene}\text{>}\text{oxygen}\text{>}\text{water}$.