Heterogenization Of H6pmo9v3o40 And Palladium Acetate In Vpi-5 And Mcm-41 And Their Use In The Catalytic Oxidation Of Benzene To Phenol

The heteropolyacid H6PMo9V3O40 (HPA) was encapsulated in MCM-41 and VPI-5. When HPA/MCM-41 is used in the direct oxidation of benzene to phenol, the heteropolyacid leaches from the MCM-41 and oxidation takes place in the homogeneous phase. VPI-5 retains the HPA and palladium acetate more efficiently than MCM-41, and can be used as a heterogeneous oxidation catalyst for benzene. However, its activity is very low since only the active species at the pore entrances of VPI-5 are accessible to the reactants.1341-3229235Passoni, L.C., Cruz, A.T., Buffon, R., Schuchardt, U., (1997) J. Mol. Catal. A, 120, p. 117Tsigdinos, G.A., Hallada, C.J., (1968) Inorg. Chem., 7, p. 437Beck, J.S., Vartuli, J.C., Roth, W.J., Leonowicz, M.E., Kresge, C.T., Schmitt, K.D., Chu, C.T.-W., Schlenker, J.L., (1992) J. Am. Chem. Soc., 114, p. 10834Davis, M.E., Montes, C., Hathaway, P.E., Garces, J.M., (1989) Stud. Surf. Sci. Catal., 49, p. 199Kozhevnikov, I.V., Sinnema, A., Jansen, R.J.J., Pamin, K., Van Bekkum, H., (1995) Catal. Lett., 30, p. 241Ryoo, M.-H., Chon, H., (1997) Microporous Mater., 10, p. 35Parton, R.F., Thibault-Starzyk, F., Reynders, R.A., Grobet, P.J., Jacobs, P.A., Bezoukhanova, C.P., Sun, W., Wu, Y., (1995) J. Mol. Catal. A, 97, p. 183Meier, W.M., Olson, D.H., (1992) Zeolites, 12, p. 449Akporiaye, D., Stöcker, M., (1992) Zeolites, 12, p. 351Martens, J.A., Feijen, E., Lievens, J.L., Grobet, P.J., Jacobs, P.A., (1991) J. Phys. Chem., 95, p. 10025Perez, J.O., Chen, P.J., Clearfield, A., (1991) J. Phys. Chem., 55, p. 9994Sulikowski, B., Haber, J., Kubacka, A., Pamin, K., Olejniczak, Z., Ptaszynski, J., (1996) Catal. Lett., 39, p. 27Kozhevnikov, I.V., (1987) Russ. Chem. Rev., 56, p. 81