Ti-MCM-41 as catalyst for a-pinene oxidation

S .CASUSCELLI; G EIMER; A CANEPA; A HEREDIA; C. PONCIO; M CRIVELLO; C PEREZ; A AGUILAR

Catalysis Today

Elsevier Science B.V., Netherlands. Editors: Prof. H.H. Kung, Evanston, USA. Prof. K. Segawa, Tokyo, Japan. Prof. J.C. Vedrine, Liverpool, UK.

Año: 2008 vol. 133 p. 678 - 683

Ti containing mesoporous materials with a MCM-41 structure were applied as heterogeneous catalysts for the liquid phase oxidation of apinene with hydrogen peroxide at 343 K. The catalysts were characterized by N2 adsorption, XRD and DRUV-Vis. The results obtained by varying the Ti content showed slight changes in the a-pinene conversion. The major products were verbenol, verbenone and campholenic aldehyde with a conversion about 12?16%. The yield of the reaction products was duplicated when an additional amount of H2O2 was added after 1 h of reaction. A high selectivity was obtained for the products of the allylic oxidation. A reaction mechanism was proposed in order to explain the obtained results.