Grafting of a tetrahydro-salen copper(II) complex on surface modified mesoporous materials and its catalytic behaviour

A tetrahydro-salen copper(II) complex (1) is grafted on the iodosilane modified surfaces of MCM-41 and MCM-48. The presence of complex 1 on the surfaces is evidenced by H-1 MAS-NMR, elemental analysis and TG-MS. The strucutre of the supports after modification remains intact, which is evident from powder XRD, N-2 adsorption/desorption (BET), and TEM analysis. The grafted materials are applicable as catalysts for cyclooctene epoxidation and they are found to maintain activity for several runs. (c) 2005 Elsevier B.V. All rights reserved.