CENTRO DE INVESTIGACION Y DESARROLLO EN CIENCIAS APLICADAS "DR. JORGE J. RONCO"
Unidad Ejecutora - UE
TI-MCM-41 CATALYSTS PREPARED BY POST-SYNTHESIS METHODS. LIMONENE EPOXIDATION WITH H2O2
DAMIÁN MARINO, NORMA G. GALLEGOS, JOSÉ F. BENGOA, ANA M. ALVAREZ, MARÍA V. CAGNOLI, SANDRA G. CASUSCELLI, EDUARDO R. HERRERO AND SERGIO G. MARCHETTI.
Año: 2007 vol. 133 p. 632 - 632
Ti-MCM-41 catalysts were prepared incorporating Ti by post-synthesis methods: wetness and wet impregnation of MCM-41 mesoporous solid. The samples were characterized by XRD at low angle, UVvis DRS, Raman spectroscopy, BET, ICP and colorimetry. The results were compared with those obtained for Ti-MCM-41 hydrotermically prepared. All catalysts were tested in the limonene epoxidation with H2O2. Three kinds of Ti sites were observed in post-synthesis catalysts which were different from that found in the hydrothermal Ti-MCM-41. These structural differences do not produce important changes in the catalytic activity, instead a slight decrease in the epoxide selectivity can be observed. The catalysts prepared by post-synthesis methods are promising in the limonene epoxidation with H2O2 since these methods are simple and reproducible.