Structural and thermal stability studies of Ti(IV) hexanuclear oxo trimethylacetato isopropoxide complex

Activity of TiO2 deposited by the CVD method on ammoxidized surface of a carbonaceous material in hydrogenation of styrene

“…The catalysts used in the experiments were high-area modified active carbon covered with chemical-vapour-deposited (CVD) TiO 2 ultra fine powder by the gas-phase of pyrolysis [Ti 6 O 6 (O i Pr) 6 (O 2 C t Bu) 6 ] [12,13]. The above precursor and activated carbon grains used as support were placed in a horizontal CVD reactor described elsewhere and heated by means of a resistance furnace in the temperature range of 673-793 K controlled by a thermocouple located inside of the reactor, in argon atmosphere under 3 mbar, for 60 min.…”

“…In our works we have focused on the study of [Ti 6 O 6 (O i Pr) 6 (O 2 C t Bu) 6 ] expected to be a promising CVD precursor for the deposition of TiO 2 nanolayers, in the range of 673-873 K [11][12][13]. The deposition of pure films with a lower content of impurities than 2% has been achieved using Ar/H 2 O as a carrier gas.…”

CVD of Thin Titanium Dioxide Films Using Hexanuclear Titanium Oxo Carboxylate Isopropoxides

“…The compounds studied were synthesized as reported earlier [35]. The colorless, crystalline powders of 1 and 2 were stored at room temperature under argon atmosphere.…”

“…Earlier thermogravimetric and mass spectrometry (MS) studies of [Ti 6 O 6 (O i Pr) 6 (OOC t Bu) 6 ] [32] showed that, during its thermolysis, volatile and stable titanium species, suitable for transport in the gas phase, were formed. In this [35] These complexes are relatively stable in air, and unreactive to moisture. Nevertheless, during all experiments, they were stored at room temperature under an argon atmosphere.…”

“…However, the low sublimation temperatures of selected multinuclear, oxo titanium(IV) alkoxide carboxylate complexes [34,35] (a result of the cluster structure) suggest that this group of compounds may also be used as precursors in CVD processes. Earlier thermogravimetric and mass spectrometry (MS) studies of [Ti 6 O 6 (O i Pr) 6 (OOC t Bu) 6 ] [32] showed that, during its thermolysis, volatile and stable titanium species, suitable for transport in the gas phase, were formed.…”