Abstract
Selective oxidation reactions like the oxyfunctionalization of alkanes, hydroxylation of aromatics and sulfoxidation of thioethers have been carried out with dilute hydrogen peroxide over titanium and vanadium metallosilicate molecular sieves with MEL topology, viz., TS-2 and VS-2. Though both the catalysts possess similar activities, substantial differences in the product distribution are observed. The oxyfunctionalization of the primary carbon atoms of the alkanes and the oxidation of the methyl substituents of the aromatic hydrocarbons distinguish VS-2 from TS-2. Both the catalysts are found to be equally active in the hydroxylation of phenol, though they possess different activities in different solvents. In general, the oxidations are “deeper” over VS-2 than on TS-2.
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References
P. Ratnasamy and R. Kumar, Catal. Lett. 22 (1993) 227.
M. Taramasso, G. Perego and B. Notari, US Patent 4,410,501 (1983).
B. Notari, Stud. Surf. Sci. Catal. 60 (1991) 343.
T. Tatsumi, M. Nakamura, S. Nagishi and H. Tominaga, J. Chem. Soc. Chem. Commun. (1990) 476.
J.S. Reddy, R. Kumar and P. Ratnasamy, Appl. Catal. 58 (1990) L1.
J.S. Reddy and S. Sivasanker, Ind. J. Technol. 30 (1992) 64.
M.S. Rigutto and H. van Bekkum, Appl. Catal. 68 (1991) L1.
G. Centi, S. Perathoner, F. Trifiro, A. Aboukeis, C.F. Aissi and M. Guelton, J. Phys. Chem. 96 (1992) 2617.
P.R. Hari Prasad Rao, A.V. Ramaswamy and P. Ratnasamy, J. Catal. 137 (1992) 225.
P.R. Hari Prasad Rao and A.V. Ramaswamy, Appl. Catal. A 93 (1993) 123.
P.R. Hari Prasad Rao and A.V. Ramaswamy, J. Chem. Soc. Chem. Commun (1992) 1245.
P.R. Hari Prasad Rao, A.A. Belhekar, S.G. Hegde, A.V. Ramaswamy and P. Ratnasamy, J. Catal., accepted.
P.B. Weisz, Stud. Surf. Sci. Catal. 7 (1980) 3.
H. Mimoun, L. Saussine, E. Daire, M. Postel, J. Fischer and R. Weiss, J. Am. Chem. Soc. 105 (1983) 3101.
D.R.C. Huybrechts, L. de Bruycker and P.A. Jacobs, Nature 345 (1990) 240.
D.R.C. Huybrechts, P.L. Buskens and P.A. Jacobs, J. Mol. Catal. 71 (1992) 129.
P.R. Hari Prasad Rao, A.V. Ramaswamy and P. Ratnasamy, J. Catal., in press.
D.M. Ruthven, M. Eic and E. Richard, Zeolites 11 (1991) 647.
A. Thangaraj, R. Kumar and P. Ratnasamy, J. Catal. 131 (1991) 294.
A. Tuel, S. Moussa-khouzami, Y. Ben Tarit and C. Naccache, J. Mol. Catal. 68 (1991) 45.
B. Kraushar-Czarnetzki and J.H.C. Van Hoof, Catal. Lett. 2 (1989) 43.
J.S. Reddy, S. Sivasanker and P. Ratnasamy, J. Mol. Catal. 71 (1992) 373.
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Ramaswamy, A.V., Sivasanker, S. Selective oxidation reactions over titanium and vanadium metallosilicate molecular sieves. Catal Lett 22, 239–249 (1993). https://doi.org/10.1007/BF00810370
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DOI: https://doi.org/10.1007/BF00810370