Biomimetic oxygen transfer by Co and Cu complexes immobilized in porous matrices

摘要

Co(II) or Cu(II) histidine or imidazole complexes were immobilized in porous matrices(montmorillonite and MCM-41) via two methods (introduction of preformed complex and complexformation within the ion-exchanged host substances). It was found that immobilization in general and thelatter method in particular increased catalytic activity and catalyst life time in the decomposition reactionsof hydrogen peroxide relative to the matrix-free complexes. The immobilized materials werecharacterized by experimental and computational methods and the structure of the guest molecules insidethe hosts were also investigated.