SOL-GEL SYNTHESIS OF LITHIUM ALUMINATE

LiAlO2 was prepared by two sol-gel methods using simultaneous hydrolys is of the reagents: aluminum sec-butoxide/lithium lithium methoxide an d aluminum sec-butoxide/LiOH. The resulting ceramic powders were compa red with those prepared by two conventional methods (i.e., solid-state fusion and peroxide). The sol-gel method provided powders with a very high gamma-LiAlO2 content after calcining at temperatures as low as 7 00 degrees C when LiOH was used, The solids were characterized by AAS, DTA, TGA, XRD, and SEM.