Generation of iron active species in MCM-41 materials

M. Trejda, K. Lázár, P. Decyk, Z. Fojud, S. Jurga, M. Ziolek

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

A new method, the immobilisation of ferroceneacetic acid (FAA) on various MCM-41 mesoporous molecular sieves (containing Si or Si+Al) followed by calcination at 773 K has been applied for the formation of iron active species. The structural, surface and catalytic properties of these materials, characterised by N2 adsorption/desorption, XRD, 27Al NMR, ESR, and Mössbauer spectroscopy as well as test reactions, were compared with those of materials prepared via commonly used impregnation methods. Contrary to Fe-impregnated samples, Fe oxides species were only slightly detected in the solids modified by FAA followed by calcination. It is evidenced that the new technique applied for Fe-modification gives rise to the significantly higher activity (in isopropanol decomposition and acetonylacetone cyclization) reached thanks to a better isolation and/or dispersion of Fe 3+ species. The presence of Al in the sample influences the Fe 3+ reduction under vacuum.

Original languageEnglish
Pages (from-to)829-836
Number of pages8
JournalStudies in Surface Science and Catalysis
Volume158 A
Publication statusPublished - 2005

Fingerprint

Multicarrier modulation
Calcination
roasting
Iron
iron
acids
Acids
2-Propanol
Cyclization
Molecular sieves
absorbents
immobilization
Impregnation
Oxides
surface properties
Paramagnetic resonance
Desorption
isolation
Thermodynamic properties
desorption

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Catalysis

Cite this

Trejda, M., Lázár, K., Decyk, P., Fojud, Z., Jurga, S., & Ziolek, M. (2005). Generation of iron active species in MCM-41 materials. Studies in Surface Science and Catalysis, 158 A, 829-836.

Generation of iron active species in MCM-41 materials. / Trejda, M.; Lázár, K.; Decyk, P.; Fojud, Z.; Jurga, S.; Ziolek, M.

In: Studies in Surface Science and Catalysis, Vol. 158 A, 2005, p. 829-836.

Research output: Contribution to journalArticle

Trejda, M, Lázár, K, Decyk, P, Fojud, Z, Jurga, S & Ziolek, M 2005, 'Generation of iron active species in MCM-41 materials', Studies in Surface Science and Catalysis, vol. 158 A, pp. 829-836.
Trejda M, Lázár K, Decyk P, Fojud Z, Jurga S, Ziolek M. Generation of iron active species in MCM-41 materials. Studies in Surface Science and Catalysis. 2005;158 A:829-836.
Trejda, M. ; Lázár, K. ; Decyk, P. ; Fojud, Z. ; Jurga, S. ; Ziolek, M. / Generation of iron active species in MCM-41 materials. In: Studies in Surface Science and Catalysis. 2005 ; Vol. 158 A. pp. 829-836.
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