J. Phys. IV France
Volume 123, March 2005
Page(s) 65 - 69

J. Phys. IV France 123 (2005) 65-69

DOI: 10.1051/jp4:2005123010

Enhanced manganese content in Mn-MCM-41 mesoporous silicas

J. El Haskouri1, S. Cabrera2, A. Beltran1, C. Guillem1, D. Beltran1, J. Latorre1, M.D. Marcos3 and P. Amoros1

1  Institut de Ciència dels Materials de la Universitat de Valencia (ICMUV), PO Box 2085, 46071 Valencia, Spain
2  Laboratorio de Sólidos y Química Teórica, Instituto de Investigaciones Químicas UMSA, Cota-Cota, Calle n$^{\circ}$ 27, La Paz, Bolivia
3  Departamento de Química, Universidad Politécnica de Valencia, Camino de Vera s/n, 46071 Valencia, Spain

The use of triethanolamine containing complexes of Si and Mn as hydrolytic precursors allows the synthesis of doped mesoporous silicas in which the Mn content can be modulated up to reach a minimum value of the Si/Mn molar ratio of 3. This limit value corresponds to a Mn relative content significantly higher than those reported to date for similar materials (Si/Mn = 6). According to XRD, TEM and porosity data, the mesoporous nature typical of the MCM-41 silicas is retained even for the samples having the highest Mn content.

© EDP Sciences 2005