The unconventional methods for oxide powders synthesis represent a frequently used technique, used to facilitate the solid state reactions evolution, to allow the high purity materials production, low particle sizes (of nanometric order) and a very good control of the operator over the reaction product characteristics.

                Our results cover a large range of unconventional synthesis methods and oxide compounds obtained using such methods:

-          hydrosilicate precursors method, applied in the synthesis of some oxide compounds of practical interest like: wollastonite, enstatite, willemite, calcium silicates, etc.;

-          combustion synthesis, applied for the spinels, perovskites, calcium aluminates, etc., preparation;

-          sol-gel method, applied to obtain some silicates, titanates, etc.;

-          the thermal decomposition of the complex combinations resulted from the oxidation reaction of  some diols with metal nitrates.

The difficulties involved in each of these methods are pursued, attempting to evidence the specific advantages and disadvantages, so that the selection of the most adequate method to be made on rational basis.