Synthesis and Processing of SnO2, CaSnO3 and Ca2SnO4 Nanopowders by Solid-State Reaction Technique

The nanopowders of sno2, casno3 and ca2sno4 in the size rang of 5-70 nm havebeen prepared using solid-state reaction technique. the technique is convenient and inexpensive incomparison to the conventional routes of compound prepared and processing where, many steps ofmixing and annealing are involved. formation of resultant compounds was explained on the basisof reaction taken place between sncl4. 5h2o, cacl2 and ca(oh2). it was found that tin oxide,calcium stannate and calcium orto stannate have been prepared at calcinations temperature400 °c/4 h by weight ratio of (sn:ca) 2:1, 1:1 and 1:2, respectively. characterization of specieswas carried out using x-ray diffraction, sem and tga analysis. investigation of samples revealedthat, agglomerations of well connected, small grains lumped together with large number of poreshave been formed. the xrd pattern analysis has shown that the change in crystalline sizes aftercalcining at various temperatures. due to change in weight ratio of sn:ca from 2:1 to 1:1, thecrystal structure has been changed from tetragonal rutile to perovskite.