Oxidación Catalítica de Olefinas Utilizando H2 O2 y Materiales Nano-Estructurados Modificados con Vanadio

Abstract

Abstract. Nano-structured materials with different V contents were synthesized and evaluated in the reaction of α-pinene oxidation with H2O2. The catalysts were characterized by X-ray diffraction, N2 adsorption, DR-UVVis Spectroscopy and evaluated in the test reaction of cyclohexene oxidation as a method of selecting the material. All the catalysts showed Good structural regularity and high surface areas. From analysis of DR-UV-Vis  it was infer a incorporation of V to silica structure, the existence of (V–O–V)n clusters and VxOy nano-oxides.

These latter species are only evidenced in the material with higher metal content. The material with the lower content of V was selected in order to evaluate their catalytic activity in the oxidation of α-pinene due to his high value of TON. The conversions reached values close to 12% with verbenone as the major product, which is used in the synthesis of an important therapeutic agent.