Hostname: page-component-76fb5796d-zzh7m Total loading time: 0 Render date: 2024-04-26T12:49:03.236Z Has data issue: false hasContentIssue false
  • English
  • Français

Vanadium-doped titania-pillared montmorillonite clay as a catalyst for selective catalytic reduction of NO by ammonia

Published online by Cambridge University Press:  09 July 2018

K. Bahranowski ,
J. Janas ,
T. Machej ,
E. M. Serwicka  and
L. A. Vartikian
K. Bahranowski
Affiliation:
Faculty of Geology, Geophysics and Environmental Protection, Academy of Mining and Metallurgy, al. Mickiewicza 30, 30-059 Kraków, Poland
J. Janas
Affiliation:
Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, ul. Niezapominajek, 30-239 Kraków, Poland
T. Machej
Affiliation:
Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, ul. Niezapominajek, 30-239 Kraków, Poland
E. M. Serwicka
Affiliation:
Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, ul. Niezapominajek, 30-239 Kraków, Poland
L. A. Vartikian
Affiliation:
Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, ul. Niezapominajek, 30-239 Kraków, Poland
Get access Rights & Permissions [Opens in a new window]

Abstract

A series of V-doped titania-pillared clay catalysts, characterized by ICP-AES chemical analysis, X-ray diffraction, BET surface area measurement, and ESR spectroscopy, have been tested in the selective catalytic reduction of NO by NH3. An ESR analysis shows that V dopant is anchored to the titania pillars. Vanadyl species with differing degrees of in-plane V-O π-covalent bonding are produced depending on the method of sample preparation. Polymeric V species appear as the V content is increased. Catalytic performance of these systems depends on the method of preparation and on the V content. The best catalyst, converting 90-100% NO in the temperature range 523-623 K, is obtained by exchange of pillared montmorillonite with vanadyl ions, at an extent of exchange below the level where significant amounts of polymeric V species appear. The co-pillared catalyst, containing vanadyl centres characterized by a higher degree of in-plane ncovalent bonding (according to ESR), is less selective than the exchanged samples.

Type
Research Article
Information
Clay Minerals , Volume 32 , Issue 4 , December 1997 , pp. 665 - 672
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1997

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Bahranowski, K. & Serwicka, E.M. (1993) ESR study of V-Al- and V-Ti-pillared montmorillonites. Coll. Surf. 72, 153–160.CrossRefGoogle Scholar
Bahranowski, K., Labanowska, M. & Serwicka, E.M. (1996) ESR characterization of catalytically active V centres supported on alumina-, titania- and zireoniapillared montmorillonite clay. Appl. Magn. Resort. 10, 477–490.CrossRefGoogle Scholar
Bahranowski, K., Dula, R., Komorek I , Romotowski, T. & Serwicka, E. (1995a) Preparation, physicochemical characterization and catalytic properties of vanadium- doped alumina- and titania-pillared montmorillonites. Stud. Surf. Sci. Catal. 91, 747–754.CrossRefGoogle Scholar
Bahranowski, K., Dula, R., Grabowski, R., Grzybowska-Świerkosz, B., Serwicka, E.M. & Wcisło, K. (1995b) Vanadium-containing pillared montmorillonites as catalysts for the oxidative dehydrogenation of propane. Abstracts Europacat-ll Symp., Maastricht 1995, 210.Google Scholar
Baiker, A., Dollenmeier, P., Glinski, M. & Relier, A. (1989) Selective catalytic reduction of nitric oxide with ammonia. I. Monolayer and multilayers of vanadia supported on titania. Appl. Catal. 35, 351–364.CrossRefGoogle Scholar
Ballhausen, C.J. & Grey, H.B. (1962) The electronic structure of the vanadyl ion. Inorg. Chem. 1, 111–122.CrossRefGoogle Scholar
Bosch, H. & Janssen, F. (1988) Catalytic reduction of nitrogen oxides. A review on the fundamentals and technology. Catal. Today, 2, 369-532.CrossRefGoogle Scholar
Brindley, G.W. & Sempels, R.E. (1977) Preparation and properties of some hydroxyaluminium beidellite. Clay Miner. 12, 229–236.CrossRefGoogle Scholar
Chen, J.P., Hausladen, M.C. & Yang, R.T. (1995) Delaminated Fe2O3-pillared clay: its preparation, characterization and activities for selective catalytic reduction of NO by NH3. J. Catal. 151, 135–146.CrossRefGoogle Scholar
De Armond, K., Garrett, B.B. & Gutowsky, H.S. (1965) Paramagnetic resonance studies of bonding in vanadyl and molybdenyl metal complexes. J. Chem. Phys. 42, 1019–1025.CrossRefGoogle Scholar
Duffy, B.L., Curry-Hyde, H.E., Cant, N.W. & Nelson, P.W. (1994) Isotopic labeling studies of the effects of temperature, water, and vanadia loading on the selective catalytic reduction of NO with NH3 over vanadia-titania catalyst. J. Phys. Chem. 98, 7153–7161.CrossRefGoogle Scholar
Kivelson, D. & Lee, J. (1964) ESR studies and the electronic structure of vanadyl ion complexes. J. Chem. Phys. 41, 1896–1903.CrossRefGoogle Scholar
Lahav, N., Shani, U. & Shabtai, J. (1978) Cross-linked smectites. I. Synthesis and properties of hydroxyaluminium montmorillonite. Clays Clay Miner. 26, 107–115.CrossRefGoogle Scholar
Lietti, L. & Forzatti, P. (1994) Temperature programmed desorption/reaction of ammonia over V2O5/TiO2 de- NOxing catalysts. J. Catal. 147, 241–249.CrossRefGoogle Scholar
McGarvey, B.R. (1967) The isotropic hyperfme interaction. J.Phys. Chem. 71, 51–67.CrossRefGoogle Scholar
Morton, H.R. & Preston, K.F. (1978) Atomic Parameters for paramagnetic resonance data. J. Magn. Reson. 30, 577–582.Google Scholar
Sterte, J. (1986) Synthesis and properties of titanium oxide cross-linked montmorillonite. Clays Clay Miner. 34, 658–664.CrossRefGoogle Scholar
Topsøe, N.-Y., Topsoe, H. & Dumesic, J.A. (1995) Vanadia/titania catalysts for selective catalytic reduction (SCR) of nitric oxide by ammonia. J. Catal. 151, 226–240.CrossRefGoogle Scholar
Went, G.T., Leu, L.-J., Rosin, R.R. & Bell, A.T. (1992) The effects of structure on the catalytic activity and selectivity of V2O5/TiO2 for the reduction of NO by NH3 . J. Catal. 134, 492–505.CrossRefGoogle Scholar
Wong, W.C. & Nobe, K. (1986) Reduction of NO with NH3 on Al2O3− and TiO2−supported metal oxide catalysts. Ind. Eng. Chem. Prod. Res. Dev. 25, 179–184.CrossRefGoogle Scholar
Yang, R.T., Chen, J.P., Kikkinides, E.S., Cheng, L.S. & Cichanowicz, J.E. (1992) Pillared clays as superior catalysts for selective catalytic reduction of NO with NH3 . Ind. Eng. Chem. Res. 31, 1440–1445. CrossRefGoogle Scholar