| 摘要 |
A process for producing mixed oxides containing an alumina species in which a mixture of a hydrated alumina having a specified surface area (average crystal size), a fluid medium and a compound having the formula MxAy wherein M is selected from the group consisting of metals, silicon, boron, arsenic and tellurium, A is selected from the group consisting of oxygen and anions, x is from 1 to 4 and y has a value satisfying said formula depending on the valence of M, is formed into a uniform sol, the sol is recovered from the liquid medium and dehydrated, and the dehydrated product is de-agglomerated to produce a mixed oxide having an average particle size of about 1 micron or less. |
