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Precision Synthesis of Heterogeneous Epoxidation Catalysts based on Ti: Investigation of molecular surface processes
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| In this work, different catalysts were synthesized by chemical vapor deposition of titanium tetrachloride onto Aerosil200 from Evonik(c) serving as an amorphous silica source, similar to the synthesis of the catalyst of Shell's SMPO process(c), and presumably also similar to the titanium site in TS-1(c). The catalysts were characterized by different spectroscopical methods (e.g. 35Cl NMR, 51V NMR, isotope exchange experiments) and molecuar models for the as obtained surface species were suggested. Finally, the prepared catalysts were used for kinetic experiments and compared to TS-1(c) in epoxidation of different olefins. |
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