A layered composition which can be used in various processes has been
developed. The composition comprises an inner core such as a cordierite
core and an outer layer comprising a refractory inorganic oxide, a
fibrous component and an inorganic binder. The refractory inorganic oxide
layer can be alumina, zirconia, titania, etc. while the fibrous component
can be titania fibers, silica fibers, carbon fibers, etc. The inorganic
oxide binder can be alumina, silica, zirconia, etc. The layer can also
contain catalytic metals such as gold and platinum plus other modifiers.
The layered composition is prepared by coating the inner core with a
slurry comprising the refractory inorganic oxide, fibrous component, an
inorganic binder precursor and an organic binding agent such as polyvinyl
alcohol. The composition can be used in various hydrocarbon conversion
processes.