The role of different parameters of synthesis in the final structure of Ti containing mesoporous materials

GRISELDA A. EIMER; CORINA M. CHANQUIA; KARIM SAPAG; EDUARDO R. HERRERO

Elsevier B.V.

Año: 2008 vol. 116 p. 670 - 670

font size="1" face="AdvGulliv-R"> Ti-containing mesoporous materials have been prepared by hydrothermal synthesis at 373 K and compared to pure siliceous MCM-41 synthesized in the same conditions. A detailed and correlative study about the effect of different synthesis parameters on the physicochemical properties of the material has been carried out. All the samples showed typical XRD patterns of a kind MCM-41 structure. It seems that the synthesis time and the surfactant chain length are critical variables to obtain good structures. Mesoporous structure allowed the incorporation of different degrees of Ti loading, although a lower degree of ordering was observed with the increase of metal content above 1%. Moreover, a high incorporation of Ti into the structure seems responsible for the development of a secondary mesoporosity confirmed by TEM and associated with a pronounced hysteresis loop in the N2