Spectroscopy and coordination chemistry of cobalt in molecular sieves

Abstract

The catalytic potential of Co-containing molecular sieves has simulated zeolite scientists to study the spectroscopyand siting of Co^2+ ions. In this review, a critical overview is given of the spectroscopic tools used: (1) to decide about the cation sites of Co^2+ and their occupancy; (2) to determine the spectroscopic signatures of framework and extra-framework cobalt; (3) to determine the amount of Co incorporated into the framework of molecular sieves; and (4) to discuss local distortions of framework cobalt.