Role of vanadium and pyridine in heteropolycompounds for selective oxidation of alcohols with hydrogen peroxide

Journal of Chemical Sciences

Valeria Palermo²  Paula I Villabrille1²  Gustavo P Romanelli4 2¹  Patricia G Vázquez²  Pietro Tundo³  Carmen V Cáceres² 

[1] Centro de Investigación y Desarrollo en Ciencias Aplicadas ``Dr. Jorge J. Ronco” (CINDECA), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata-CCT-CONICET. Calle 47 Nro 257, B1900AJK La Plata, Argentina$$;Centro de Investigación y Desarrollo en Ciencias Aplicadas “Dr. Jorge J. Ronco” (CINDECA), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata-CCT-CONICET. Calle 47 Nro 257, B1900AJK La Plata, Argentina$$;Department of Environmental Science, Cà Foscari University, Dorsoduro 2137, 30123 Venice, Italy$$

关键词: Oxidation reaction;    alcohol oxidation;    vanadium-substituted heteropolyacids;    pyridinium heteropolyacid salt.;   

DOI  :  

来源: Indian Academy of Sciences

【 摘 要 】

This study describes the application of heteropolyacids H3PMo12O40,H4SiMo12O40, H4PMo11VO40, H5PMo10V2O40, H9PMo6V6O40, and a hybrid pyridine-modified heteropolyacid with Keggin structure for selective oxidation of alcohols to ketones or aldehydes using aqueous hydrogen peroxide and acetonitrile as solvent. Performance of these different catalysts in 1-phenylethanol oxidation was studied. Influence of reaction temperature, amount of catalyst and hydrogen peroxide and reaction time on the yield of acetophenone was investigated to obtain optimal reaction conditions. Oxidation ability of the catalyst depended on the number of vanadium atoms present in the Keggin ion and to a lesser extent on pyridine substitution in the Keggin secondary structure. In order to explore the applicability of the method for selective oxidation of alcohols to ketones or aldehydes, various alcohols were investigated according to the general procedure using hybrid pyridine-modified heteropolyacid.

【 授权许可】

Unknown