THE SYNTHESIS OF IRON CANCRINITE USING TETRAHEDRAL IRON SPECIES

Sodium ferrate (VI), as a primary source of iron, has been investigate d in the hydrothermal synthesis of the zeolite cancrinite. Crystalline material with Fe(III) incorporated into lattice sites was isolated fr om a starting gel containing 0.5 mole fraction Fe2O3/Al2O3. The use of X-ray powder diffraction, infrared spectroscopy, X-ray fluorescence c hemical analysis, electron microscopy, thermal analysis, and magnetic measurements were all used to characterize the final product. An incre ase in unit cell dimensions was noted for the iron-substituted cancrin ite when compared with a pure aluminum cancrinite. (C) Elsevier Scienc e Inc. 1996