| abstract |
Unsaturated compounds in hydrocarbon streams are onnhydrogenates a catalyst which contains at least one metal of the 10thnGroup of the Periodic Table of the Elements and at least one metalnthe 11th group of the Periodic Table of the Elements on an alumina carrierncontains, the metal or the metals of the 10thnGroup essentially in a surface layer near the surface of thenCatalyst grain is or are concentrated, the metal or thenMetals of the 11th group essentially uniformly by volumenof the catalyst grain is or are distributed, andnthe weight ratio of the metal or metals of the 11thnGroup to metal or metals of group 10 at mostnIs 1.95. |