Abstract
As a raw material for the production of spinel (MgAl2O4) at low temperature, mixed hydroxides were prepared by the simultaneous hydrolysis of magnesium and aluminum alkoxides. These hydroxides were identified as a mixture of 2 Mg(OH)2-Al(OH)3 and boemite gel AlO(OH) and were converted to spinel below 1000°C. The formation mechanism of spinel from these hydroxides was examined by means of X-ray diffraction and thermal analysis. The lattice constant of spinel obtained by heating these hydroxides at 1400°C for 3 hr was 8.088 Å.
