The Texas A&M University System

Boris G Shpeizer

Abraham Clearfield

A new class of supermicroporous mixed oxides, with pore sizes in the 10-20 &#x212b; range has been prepared utilizing basic metal acetates. The reactions are carried out in non-aqueous solvent media to which an excess of amine is added. Hydrolysis of the reagents is effected by addition of a water-propanol mixture and refluxing. The amine and solvent are removed by thorough washing and/or calcining at temperatures as low as 200&#xb0; C. Mixtures of transition metal oxides with either ZrO, TiO, LaO, SiO, AlOor mixtures thereof were prepared. The surface area curves of the pure oxides are Type I with surface areas of 400-600 m/g and up to 1100 m/g for the mixed oxides.

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Bryan, TX, United States of America

Boris G Shpeizer