Chromia microspheres were synthesized by the sol-emulsion-gel method.
The solvent extraction technique was followed for the preparation of t
he sols. Cr2O3 crystallized as single phase in the temperature range 4
00 to 1300 degrees C. Complete crystallization occurred at 1300 degree
s C. Spherical morphology of the powder was confirmed by scanning elec
tron microscopy. A size range of 3-30 mu m was observed in the powder
calcined at 1300 degrees C.