In recent years the study of new materials in the field of catalysis has been attracted the attention of scientific world in order to prepare catalysts more stable, selective and with the possibility of their easy recovery and recycle. In this work we investigated the preparation and characterization of new catalytic polymeric membranes based on PVDF and PDMS polymers, entrapping a series of ruthenium porphyrin. Their behaviour as catalysts for olefins aziridination was studied.