A method has been developed for the solution-based metal exchange of carboxylato-alumoxanes [Al(O).sub.x (OH).sub.y (O.sub.2 CR).sub.z ].sub.n with a wide range of metal cations. Metal-exchanged carboxylato-alumoxanes are new, particularly those in which about 10% to about 50% or more of the Al ions...http://www.google.es/patents/US6207130?utm_source=gb-gplus-sharePatente US6207130 - Metal-exchanged carboxylato-alumoxanes and process of making metal-doped alumina
Metal-exchanged carboxylato-alumoxanes and process of making metal-doped alumina