KINETIC MODELING OF N-HEXANE OXYFUNCTIONALIZATION OVER TITANIUM SILICALITES - EFFECTS OF TITANIUM CONTENT

The kinetics of n-hexane oxyfunctionalization over a series of titaniu m silicalites (TS-1) has been investigated using aqueous hydrogen pero xide (30 wt %). The oxyfunctionalization reaction has been modeled usi ng results from a batch reactor. All catalysts were also characterized using analytical techniques such as XRD, UV-vis, and FT IR spectrosco pies. The intrinsic kinetic constants were found to be proportional to the fraction of T atoms substituted with titanium in the TS-1 framewo rk. This kinetic analysis indicates a substitutional limit of 1.9% T a toms, in full agreement with previous literature data obtained by anal ytical techniques. The effects of temperature and extra-framework tita nium are also discussed.