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Copper-doped alumina-pillared montmorillonites as catalysts for oxidation of toluene and xylenes with hydrogen peroxide

Published online by Cambridge University Press:  09 July 2018

K. Bahranowski ,
M. Gąsior ,
A. Kielski ,
J. Podobiński ,
E. M. Serwicka ,
L. A. Vartikian  and
K. Wodnicka
K. Bahranowski
Affiliation:
Faculty of Geology, Geophysics and Environmental Protection, Academy of Mining and Metallurgy, al. Mickiewicza 30, 30-059 Kraków, Poland
M. Gąsior
Affiliation:
Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, 30-239 Kraków, ul. Niezapominajek 1, Poland
A. Kielski
Affiliation:
Faculty of Material Chemistry and Ceramics, Academy of Mining and Metallurgy, al. Mickiewicza 30, 30-059 Kraków, Poland
J. Podobiński
Affiliation:
Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, 30-239 Kraków, ul. Niezapominajek 1, Poland
E. M. Serwicka*
Affiliation:
Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, 30-239 Kraków, ul. Niezapominajek 1, Poland
L. A. Vartikian
Affiliation:
Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, 30-239 Kraków, ul. Niezapominajek 1, Poland
K. Wodnicka
Affiliation:
Faculty of Material Chemistry and Ceramics, Academy of Mining and Metallurgy, al. Mickiewicza 30, 30-059 Kraków, Poland
*
1Author for correspondence
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Abstract

Catalytic properties of Cu-doped alumina-pillared montmorillonite samples have been tested in the liquid phase oxidation of toluene, o-, m-, and p-xylene with hydrogen peroxide. The results show that the clay samples possess significant activity for both the oxidation of methyl groups and hydroxylation of the aromatic ring. Physicochemical characterization of the catalysts using XRD, BET, ESR and ICP-AES techniques show that they are porous materials with Cu species located in the interlayer, present either as isolated Cu2+ ions anchored at alumina pillars or as patches of amorphous CuO. The dependence of the overall yields on the amount of Cu dopant is discussed and explained in terms of the catalyst structural properties.

Type
Research Article
Information
Clay Minerals , Volume 34 , Issue 1 , March 1999 , pp. 79 - 87
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1999

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Footnotes

2

Permanent address: Institute of Chemical Physics, Armenian Academy of Sciences, 375044 Erevan, Sevak str. 5/2, Armenia.

References

Bahranowski, K., Dula, R., Łabanowska, M. & Serwicka, E.M. (1996a) ESR study of Cu centers supported on Al-, Ti-, and Zr-pillared montmorillonite clays. Appl. Spectrosc. 50, 1439–1445.CrossRefGoogle Scholar
Bahranowski, K., Janas I , Machej, T., Serwicka, E.M. & Vartikian, L.A. (1997) Vanadium-doped titaniapillared montmorillonite clay as catalyst for selective catalytic reduction of NO by ammonia. Clay Miner. 32, 665–672.CrossRefGoogle Scholar
Bahranowski, K., Dula, R., Grabowski, R., Grzybowska-Swierkosz, B., Serwicka, E.M. & Wcislo, K. (1995) Vanadium-containing pillared montmorillonites as catalysts for the oxidative dehydrogenation of propane. P. 210 in: Europacat-U Abstract Volume, Maastricht, 1995.Google Scholar
Bahranowski, K., Gąsior, M., Jagielska, E., Podobiński, J., Serwicka, E.M. & Vartikian, L.A. (1996b) Copperdoped alumina-pillared montmorillonites as catalysts for hydroxylation of phenol by hydrogen peroxide. P. 7 in: The Rosenquist Symposium: Clay Minerals in the Modern Society, Abstract Volume, 11 Oslo, 1996.Google Scholar
Bahranowski, K., Gąsior, M., Kielski, A., Podobiński, J., Serwicka, E.M., Vartikian, L.A. & Wodnicka, K. (1998) Physico-chemical characterization and catalytic properties of copper-doped alumina-pillared montmorillonites. Clays Clay Miner. 46, 98–102.CrossRefGoogle Scholar
Hari Prasad Rao, P.R., Belhekar, A.A., Hegde, S.G., Ramaswamy, A.V. & Ratnasamy, P. (1993) Studies on crystalline microporous vanadium silicates. II. FTIR, NMR, and ESR spectroscopy and catalytic oxidation of alkylaromatics over VS-2. J. Catal. 141, 595–603.Google Scholar
Khouw, C.B., Dartt, C.B., Labinger LA. & Davis, M.E. (1994) Studies on the catalytic oxidation of alkanes and alkenes by titanium silicates. J. Catal. 149, 195–205.CrossRefGoogle Scholar
Mal, N.K., Bhaumik, A., Kumar, R. & Ramaswamy, A.V. (1995a) Sn-ZSM-12, a new, large pore MTW type tin-silicate molecular sieve: synthesis, characterization and catalytic properties in oxidation reactions. Catal. Lett. 33, 387–394.CrossRefGoogle Scholar
Mal, N.K., Ramaswamy, V., Ganapathy, S. & Ramaswamy, A.V. (1995b) Synthesis of tin-silicalite molecular sieves with MEL structure and their catalytic activity in oxidation reactions. Appl. Catal. A, 125, 233–245.Google Scholar
Notari, B. (1988) Synthesis and catalytic properties of titanium containing zeolites. Stud. Surf. Sci. Catal. 37, 413–425.CrossRefGoogle Scholar
Reddy, K.R., Ramaswamy, A.V. & Ratnasamy, P. (1993) Studies on crystalline microporous vanadium silicates. IV. Synthesis, characterisation and catalytic properties of V-NCL-1 a large pore molecular sieve. J. Catal. 143, 275–285.CrossRefGoogle Scholar
Romano, U., Esposito, A., Maspero, F., Neri, C. & Clerici, M.G. (1990) Selective oxidation with Ti-silicalite. La Chimica & L'Industria, 72, 610–616.Google Scholar
Taramasso, M., Manara, G., Fattore, V. & Notari, B. (1987) U.S. Patent 4,666,692.Google Scholar
Taramasso, M., Perego, G. & Notari, B. (1983) U.S. Patent 4,410,501.Google Scholar
Vaughan, D.E.W. (1988) Pillared clays — a historical perspective. Catal. Today, 2, 187–198.CrossRefGoogle Scholar
Vaughan, D.E.W. & Lussier, R. (1980) Preparation of molecular sieves based on pillared interlayered clays (PILC). Pp. 94-101 in: Proc. 5th Int. Conf. on Zeolites, Naples, 1980, (Rees, L.V.C., editor). Heyden, London.Google Scholar