Hostname: page-component-cd9895bd7-gxg78 Total loading time: 0 Render date: 2024-12-27T11:55:20.958Z Has data issue: false hasContentIssue false
  • English
  • Français

Fe(III)-modified montmorillonite and bentonite: Synthesis, chemical and UV-VIs spectral characterization, arsenic sorption, and catalysis of oxidative dehydrogenation of propane

Published online by Cambridge University Press:  01 January 2024

T. Grygar ,
D. Hradil ,
P. Bezdička ,
B. Doušová ,
L. Čapek  and
O. Schneeweiss
T. Grygar*
Affiliation:
Institute of Inorganic Chemistry ASCR, 250 68 Řež, Czech Republic
D. Hradil
Affiliation:
Institute of Inorganic Chemistry ASCR, 250 68 Řež, Czech Republic
P. Bezdička
Affiliation:
Institute of Inorganic Chemistry ASCR, 250 68 Řež, Czech Republic
B. Doušová
Affiliation:
Institute of Chemical Technology in Prague, Technicka 5, 166 28 Prague 6, Czech Republic
L. Čapek
Affiliation:
University Pardubice, Čs. Legii 565, 532 10 Pardubice, Czech Republic
O. Schneeweiss
Affiliation:
Institute of Physics of Materials ASCR, Žižkova 22, 616 62 Brno, Czech Republic
*
*E-mail address of corresponding author: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Two major species were identified in Fe-treated montmorillonite: monomeric or dimeric hydroxoaqua cations Fe(OH)x(3−x)+${\rm{Fe}}({\rm{OH}})_x^{(3 - x) + }$ (form I), and polymeric structures with edge-shared Fe(O,OH)6 (form II). These species have different electron spectra (absorption maximum is 29,600 cm−1 in form I, and 26,000 and 28,000 cm−1 in form II), chemical and thermal stability, and electrochemical behavior. Form I behaves as a partly exchangeable cation in interaction with Cu2+ from Cu-trien solution and Ni2+ from Ni-EDTA, that can be used for selective quantitative analysis. On heating above the dehydration temperature (∼100–150°C) montmorillonite with Fe3+ in form I is converted to a mica-like structure and Fe3+ ions are fixed more strongly in the montmorillonite structure. Form II behaves similarly to hydrous ferric oxides, but its thermal crystallization to hematite is postponed to ∼500–600°C. The Fe3+ cations in the interlayer space are much less thermally stable than Al pillars in pillared interlayered clays (PILCs). Form I is more active in oxidative dehydrogenation of propane, while form II is the active species in sorption of As and the non-specific combustion of propane. To produce only form II by the treatment of montmorillonite with Fe3+, its load must be kept below ∼20 wt.%; otherwise the usual hydrous ferric oxides are formed.

Keywords

As sorptionFe-montmorilloniteFe-bentoniteOxidative Dehydrogenation of PropanePillaringSpeciation of Fe
Type
Research Article
Information
Clays and Clay Minerals , Volume 55 , Issue 2 , April 2007 , pp. 165 - 176
Copyright
Copyright © 2007, The Clay Minerals Society

References

Belver, C. Banares-Munoz, M.A. and Vicente, M.A., (2004) Fe-saponite pillared and impregnated catalysts. I. Preparation and characterisation Applied Catalysis B — Environmental 50 101–112 10.1016/j.apcatb.2004.01.010.CrossRefGoogle Scholar
Belver, C. Vicente, M.A. Martinez-Arias, A. and Fernandez-Garcia, M., (2004) Fe-saponite pillared and impregnated catalysts II. Nature of the iron species active for the reduction of NOx with propene Applied Catalysis B — Environmental 50 227–234 10.1016/j.apcatb.2004.01.009.CrossRefGoogle Scholar
Belver, C. Vicente, M.A. Fernandez-Garcia, M. and Martinez-Arias, A., (2004) Supported catalysts for DeNO(x) reaction based on iron clays Journal of Molecular Catalysis A — Chemical 219 309–313 10.1016/j.molcata.2004.05.025.CrossRefGoogle Scholar
Cañizares, P. Valverde, J.L. Sun Kou, M.R. and Molina, C.B., (1999) Synthesis and characterization of PILCs with single and mixed oxide pillars prepared from two different bentonites. A comparative study Microporous and Mesoporous Materials 29 267–281 10.1016/S1387-1811(98)00295-9.CrossRefGoogle Scholar
Čapek, L. Kreibich, V. Dědeček, J. Grygar, T. Wichterlová, B. Sobalík, Z. Martens, J.A. Brosius, R. and Tokarová, V., (2005) Analysis of Fe species in zeolites by UV-VIS-NIR, IR spectra and voltammetry. Effect of preparation, Fe loading and zeolite type Microporous and Mesoporous Materials 80 279–289 10.1016/j.micromeso.2004.12.014.CrossRefGoogle Scholar
Cases, J.M. Bérend, I. François, M. Uriot, J.P. Michot, L.J. and Thomas, F., (1997) Mechanism of adsorption and desorption of water vapor by homoionic montmorillonite: 3. Mg2+, Ca2+, Sr2+, and Ba2+ exchanged forms Clays and Clay Minerals 45 8–22 10.1346/CCMN.1997.0450102.CrossRefGoogle Scholar
Chen, J.P. Hausladen, M.C. and Yang, R.T., (1995) Delaminated Fe2O3-pillared clay, its preparation, characterization, and activities for selective catalytic reduction of NO by NH3 Journal of Catalysis 151 135–146 10.1006/jcat.1995.1016.CrossRefGoogle Scholar
Cornell, R.M. and Schwertmann, U., (2003) The Iron Oxides, Structure, Properties, Reactions, Occurrences and Uses Weinheim, Germany Wiley-VCH 152–160.CrossRefGoogle Scholar
Doff, D.H. Gangas, N.H.J. Allan, J.E.M. and Coey, J.M.D., (1988) Preparation and characterization of iron oxide pillared montmorillonite Clay Minerals 23 367–377 10.1180/claymin.1988.023.4.04.CrossRefGoogle Scholar
Doménech, A. Pérez-Ramírez, J. Ribera, A. Kapteijn, F. Mul, G. and Moulijn, J.A., (2002) Characterization of iron species in ex-framework FeZSM-5 by electrochemical methods Catalysis Letters 78 303–312 10.1023/A:1014937424671.CrossRefGoogle Scholar
Dramé, H., (2005) Cation exchange and pillaring of smectites by aqueous Fe nitrate solutions Clays and Clay Minerals 53 335–347 10.1346/CCMN.2005.0530402.CrossRefGoogle Scholar
García-Sanchez, A. Alvarez-Ayuso, E. and Rodriguez-Martin, F., (2002) Sorption of As(V) by some oxyhydroxides and clay minerals. Application to its immobilization in two polluted mining soils Clay Minerals 37 187–194 10.1180/0009855023710027.CrossRefGoogle Scholar
Grygar, T. Bezdička, P. Hradil, D. Hrušková, M. Novotná, K. Kadlec, J. Pruner, P. and Oberhänsli, H., (2005) Characterization of expandable clay minerals in Lake Baikal sediments by thermal dehydration and cation exchange Clays and Clay Minerals 53 389–400 10.1346/CCMN.2005.0530407.CrossRefGoogle Scholar
Izumi, Y. Masih, D. Aika, K. and Seida, Y., (2005) Characterization of intercalated iron(III) nanoparticles and oxidative adsorption of arsenite on them monitored by X-ray absorption fine structure combined with fluorescence spectrometry Journal of Physical Chemistry B 109 3227–3232 10.1021/jp047571o.CrossRefGoogle ScholarPubMed
Lenoble, V. Bouras, O. Deluchat, V. Serpaud, B. and Bollinger, J.C., (2002) Arsenic adsorption onto pillared clays and iron oxides Journal of Colloid and Interface Science 255 52–58 10.1006/jcis.2002.8646.CrossRefGoogle Scholar
Lopes, L. de Laat, J. and Legube, B., (2002) Charge transfer of iron(III) monomeric and oligomeric aqua hydroxo complexes: Semiempirical investigation into photoactivity Inorganic Chemistry 41 2505–2517 10.1021/ic011029m.CrossRefGoogle ScholarPubMed
Maes, N. and Vansant, E.F., (1995) Study of Fe2O3-pillared clays synthesized using the trinuclear Fe(III)-acetato complex as pillaring precursor Microporous Materials 4 43–51 10.1016/0927-6513(94)00080-F.CrossRefGoogle Scholar
Meier, L.P. and Kahr, G., (1999) Determination of the cation exchange capacity (CEC) of clay minerals using the complexes of copper(II) ion with triethylenetetramine and tetraethylenepentamine Clays and Clay Minerals 47 386–388 10.1346/CCMN.1999.0470315.CrossRefGoogle Scholar
Meites, L., (1963) Handbook of Analytical Chemistry New York-Toronto-London McGraw Hill Book Company 45 section 1.Google Scholar
Novoveská, K. Bulánek, R. and Wichterlová, B., (2005) Oxidation of propane with oxygen, nitrous oxide and oxygen/nitrous oxide mixture over Co- and Fe-zeolites Catalysis Today 100 315–319 10.1016/j.cattod.2004.10.019.CrossRefGoogle Scholar
Pérez-Ramírez, J. and Gallardo-Llamas, A., (2005) Impact of the preparation method and iron impurities in Fe-ZSM-5 zeolites for propylene production via oxidative dehydrogenation of propane with N2O Applied Catalysis A: General 279 117–123 10.1016/j.apcata.2004.10.020.CrossRefGoogle Scholar
Scheinost, A.C. Chavernas, A. Barron, V. and Torrent, J., (1998) Use and limitations of second-derivative diffuse reflectance spectroscopy in the visible to near-infrared range to identify and quantify Fe oxide minerals in soils Clays and Clay Minerals 46 528–536 10.1346/CCMN.1998.0460506.CrossRefGoogle Scholar
Sherman, D.M., (1985) The electronic structures of Fe3+ coordination sites in iron oxides; Applications to spectra, bonding, and magnetism Physics and Chemistry of Minerals 12 161–175 10.1007/BF00308210.CrossRefGoogle Scholar
Zak, T., (1999) CONFIT for Windows 95® Mössbauer Spectroscopy in Materials Science, Series III: High Technology 66 385–390 10.1007/978-94-011-4548-0_35.CrossRefGoogle Scholar
Zhao, D.Y. Wang, G.J. Yang, Y.S. Guo, X.X. Wang, Q.B. and Ren, J.Y., (1993) Preparation and characterization of hydroxy-FeAl pillared clays Clays and Clay Minerals 41 317–327 10.1346/CCMN.1993.0410306.CrossRefGoogle Scholar