Patent ID: 7534737

Claim:
A process for preparing a layered catalyst composition for selectively hydrogenating a C8-C19 diolefin to a C8-C19 monoolefin in a hydrocarbon mixture comprising the C8-C19 diolefin and the C8-C19 monoolefin at selective hydrogenation conditions the process comprising: a. forming an inner core comprising a first refractory inorganic component in a first liquid phase, b. forming an outer layer bonded to said inner core, the outer layer comprising a second refractory inorganic component having dispersed thereon at least one IUPAC Group 10 metal and at least one IUPAC Group 11 metal, the process comprising: i) coating the inner core with a slurry comprising a second liquid phase, the second refractory inorganic component, depositing on the coated core at least one IUPAC Group 10 metal and at least one IUPAC Group 11 metal, drying the coated core and calcining at a temperature of between 400 to about 900° C. for a time sufficient to bond the outer layer to the inner core and provide a layered support; and ii) reducing the the layered support of step i) under reduction conditions to provide the layered catalyst composition.