Mesoporous Ce-Mn-MCM-41 molecular sieves with Si/(Ce+Mn) molar ratio = 43, 61, 79 and 97, were synthesized using cetyltrimethylammonium bromide as surfactant, manganese acetate and cerium sulfate as source of manganese and cerium under hydrothermal conditions. The mesoporous materials were characterized using several techniques, e.g. XRD, FTIR, Nitrogen adsorption and SEM, XRD studies indicated that the materials had the standard MCM-41 structure. FTIR studies showed that cerium and manganese ions were incorporated into the hexagonal mesoporous materials. Nitrogen adsorption was used to determine specific surface area, pore volume, pore diameter and wall thickness in the calcined Ce-Mn-MCM-41. The morphology of Ce-Mn-MCM-41 materials was examined using SEM.