A silica immobilized cobalt complex: absorption of dioxygen and the redox ability in aqueous solution

摘要

A new dioxygen carrier supported on a solid matrix has been synthesized through the tethering of a dinuclear chelating ligand to the surface of mesoporous silica. The material thus prepared is extremely efficient for the selective absorption of dioxygen from gaseous mixtures. In aqueous solution, this material displays good catalytic ability for the disproportionation of H2O2. (C) 2003 Elsevier Ltd. All rights reserved.