Layered catalyst composition and processes for preparing and using the composition

A hydrocarbon conversion process comprising contacting a hydrocarbon stream with a layered composition under hydrocarbon conversion conditions to give a converted product, the layered composition comprising an inner core, an outer layer bonded to said inner core, the outer layer bonded to the inner core to the extent that the attrition loss is less than 10 wt. % based on the weight of the outer layer and the outer layer comprising an outer refractory inorganic oxide having uniformly dispersed thereon at least one platinum group metal and at least one promoter metal, the catalyst composition further having dispersed thereon at least one modifier metal, and the inner core and outer refractory inorganic oxide are comprised of different materials.