The heterogeneously catalyzed epoxidation of commercially available biodiesel with aqueous H2O2 as an oxidant was studied over composite catalysts consisting of microporous titanium silicalite-1 (TS-1) as reactive and polymer-based spherical activated carbon (PBSAC) as sorptive component. The results are compared to that of a commercial TS-1 catalyst. The polymer-based spherical activated carbon was applied either as a support or as an exotemplate. In the composite catalyst, the active titanium sites are utilized four times more efficiently than in the commercial TS-1.