A novel supported palladium catalyst for alternating copolymerization of styrene and carbon monoxide

Abstract

A new heterogeneous catalyst, polyaniline supported palladium (II) chloride (PANI–PdCl2), was synthesized and studied for alternating copolymerization of styrene (ST) with carbon monoxide (CO) to prepare polyketone (PK). The SEM, FTIR and XRD results indicated that PdCl2 was successfully supported on PANI backbone. The 1H NMR, FTIR, 13C NMR, TG and DTG results indicated that the supported catalyst changed the microstructures of PK, and the product is a linear alternating copolymer with higher degradation rates and decomposition temperatures. Furthermore, PANI–PdCl2 catalyst was found to serve as an effective recycled catalyst after the third recover time.