STUDIES ON THE SYNTHESIS, CHARACTERIZATION AND CATALYTIC PROPERTIES OF THE LARGE-PORE TITANOSILICATE, ETS-10

The titanosilicate ETS-10 has been synthesized from titanosilicate gel s in the presence and absence of seeds of ETS-LF and in the presence o f an organic templating agent. The templates used were choline chlorid e [HOCH2CH2(CH3)(3)N+Cl-] and the bromide salt of hexaethyl diquat-5 [ Br-(C2H5N+(CH2N+(C2H5Br-]. The influence of some synthesis parameters on the crystallization of ETS-10 in the presence and absence of seeds and templates has been investigated. The physico-chemical characteriza tion of these synthesized materials has been carried out by XRD, SEM, IR, DTA/TGA and sorption of different probe molecules. The activities of the H-forms of the ETS-10 samples prepared by the different routes in catalyzing the dehydration of n-butanol, isomerization of m-xylene and 1,3,5-trimethyl benzene are reported.