Highly dispersed Co particles in MCM-41 were prepared by direct addition of CoCl2 to the synthesis gel. The small clusters of Co did not sinter during reduction and sulfidation. Incorporation of Co into the MCM-41 lattice was not observed. The addition of Co to the synthesis gel did not alter the structural characteristics of the MCM-41 samples.
Jentys, A., Pham, N. H., Vinek, H., Englisch, M., Englisch, M., & Lercher, J. A. (1996). Synthesis and characterization of mesoporic materials containing highly dispersed cobalt. Microporous materials, 6(1), 13-17. https://doi.org/10.1016/0927-6513(95)00079-8