Catalytic Properties of Hierarchical Ti-MFI Zeolites in the Synthesis of Cyclic Carbonates from Styrene Under CO2 Pressure

Hierarchical titanosilicate zeolites of the MFI structural type (zeolites with the MFI framework topology according to the classification of the International Zeolite Association) showed a high catalytic activity in the synthesis of cyclic carbonate from styrene in the presence of tert-butyl hydroperoxide as an oxidant. It has been shown that the combination of the redox properties of titanium centers with the acid-base characteristics of the zeolite matrix ensures the efficient implementation of the tandem process within a single reaction medium. The results obtained confirm the potential of titanium-containing zeolites as an effective platform for creating heterogeneous catalysts for the direct conversion of olefins into cyclic carbonates.