Formation of magnesium spinel in the presence of LiCl

The formation of magnesium spinel through a solid state reaction was studied. The synthesis was produced by mixing reactant powders in different proportions and after thermal treatments at 950◦C from 1 h to several days. The effect of LiCl on the kinetics of spinel formation was analysed. The mono-charged Li+ ion produces a deficient alumina and magnesia structure that accelerates the diffusion of Mg2+ and Al3+ into the respective oxides. The formation of spinel occurs into alumina particles. Transport through the gaseous phase of lithium and magnesium chlorides enhances the kinetics o