Chemistry Letters, Vol.33, No.5, 588-589, 2004
Direct synthesis and spectroscopic evidence of framework Co(II) ions in SBA-15 mesoporous molecular sieves
CoSBA-15 with different n(Si)/n(Co) ratio have been synthesized in acidic media using nonionic surfactants and characterized, for the first time, by XRD, AAS, N-2 adsorption, UV-vis DRS and ESR spectroscopy. Spectroscopic data show that all cobalt atoms in CoSBA-15 are extensively in tetrahedral coordination.