SYNTHESIS OF TITANIUM SILICATE ETS-10 - THE EFFECT OF TETRAMETHYLAMMONIUM ON THE CRYSTALLIZATION KINETICS

Titanium silicate ETS-10 was synthesized from titanosilicate gels in the presence of an organic template-tetrametylammonium (TMA) chloride-at temperatures of 160, 180, and 200-degrees-C. The kinetic analysis of the crystallization of ETS-10 permits us to follow the role of the used template during the consecutive steps of the process. The presence of TMA diminishes the nucleation time and acclerates the crystal growth. The incorporation of TMA in the channel system of titanium silicate changes significantly the crystal morphology of ETS-10.