(1) Department of Synthetic Chemistry, Faculty of Engineering, The University of Tokyo, Hongo, 113 Tokyo, Japan
Abstract:
Reactant shape selectivity of supported titanium catalysts for epoxidation of cyclohexene and 2-hexene has an excellent correlation with the pore diameter of the catalysts. With titanosilicate the preference to cis isomer epoxidation is small compared to TiO2-SiO2 probably because of the restriction of its diffusion imposed by the zeolite micropore structure.