In one embodiment, a method for making a composition can comprise
combining a Type II aluminum hydroxide gel with a Type II oxygen storage
gel prior to calcination to form a combined gel, and spray drying the
combined gel to form a dried composite. A composition can comprise a
composite comprising a Type II aluminum oxide component and about 5 wt %
to about 70 wt % Type II oxygen storage component, based upon a total
weight of the composite. The oxygen storage component can comprises a
cluster of primary oxygen storage particles having a particle size,
measured along a major axis, of about 50 .ANG. to about 100 .ANG..