Synthesis and characterization of spherical mesoporous MCM-41 materials containing transition metals

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Abstract

Copper, cobalt, aluminum and Cu/Fe bimetallic spherical mesoporous MCM-41 materials have been synthesized by the modified Stöber's method and characterized by different methods (XRD, N2 adsorption-desorption, TPR, FTIR measurements). The results showed that these ions can be incorporated into the MCM-41 structure. With increasing metal content the crystallinity and the BET surface of the samples decreased indicating the limitations of the procedure. FTIR measurements revealed the presence of Lewis acid sites in all types of our materials while in case of Al-MCM-41and Cu/Fe-MCM-41 also Broensted acidity. Only copper containing and the bimetallic Cu/Fe sample showed redox behavior, Co containing samples even with higher metal content can be reduced over 970 K.

Original languageEnglish
Pages (from-to)813-819
Number of pages7
JournalStudies in Surface Science and Catalysis
Volume154 A
Publication statusPublished - 2004

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Multicarrier modulation
Transition metals
transition metals
Copper
synthesis
Metals
Lewis Acids
copper
Cobalt
Aluminum
Acidity
acidity
metals
crystallinity
Desorption
cobalt
desorption
Ions
aluminum
Adsorption

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Catalysis

Cite this

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title = "Synthesis and characterization of spherical mesoporous MCM-41 materials containing transition metals",
abstract = "Copper, cobalt, aluminum and Cu/Fe bimetallic spherical mesoporous MCM-41 materials have been synthesized by the modified St{\"o}ber's method and characterized by different methods (XRD, N2 adsorption-desorption, TPR, FTIR measurements). The results showed that these ions can be incorporated into the MCM-41 structure. With increasing metal content the crystallinity and the BET surface of the samples decreased indicating the limitations of the procedure. FTIR measurements revealed the presence of Lewis acid sites in all types of our materials while in case of Al-MCM-41and Cu/Fe-MCM-41 also Broensted acidity. Only copper containing and the bimetallic Cu/Fe sample showed redox behavior, Co containing samples even with higher metal content can be reduced over 970 K.",
author = "A. Szegedi and P{\'a}ł, {Borb{\'e}ly G.} and E. Meretei and Z. K{\'o}nya and Z. Horv{\'a}th and L. B{\'i}r{\'o} and I. Kiricsi",
year = "2004",
language = "English",
volume = "154 A",
pages = "813--819",
journal = "Studies in Surface Science and Catalysis",
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TY - JOUR

T1 - Synthesis and characterization of spherical mesoporous MCM-41 materials containing transition metals

AU - Szegedi, A.

AU - Páł, Borbély G.

AU - Meretei, E.

AU - Kónya, Z.

AU - Horváth, Z.

AU - Bíró, L.

AU - Kiricsi, I.

PY - 2004

Y1 - 2004

N2 - Copper, cobalt, aluminum and Cu/Fe bimetallic spherical mesoporous MCM-41 materials have been synthesized by the modified Stöber's method and characterized by different methods (XRD, N2 adsorption-desorption, TPR, FTIR measurements). The results showed that these ions can be incorporated into the MCM-41 structure. With increasing metal content the crystallinity and the BET surface of the samples decreased indicating the limitations of the procedure. FTIR measurements revealed the presence of Lewis acid sites in all types of our materials while in case of Al-MCM-41and Cu/Fe-MCM-41 also Broensted acidity. Only copper containing and the bimetallic Cu/Fe sample showed redox behavior, Co containing samples even with higher metal content can be reduced over 970 K.

AB - Copper, cobalt, aluminum and Cu/Fe bimetallic spherical mesoporous MCM-41 materials have been synthesized by the modified Stöber's method and characterized by different methods (XRD, N2 adsorption-desorption, TPR, FTIR measurements). The results showed that these ions can be incorporated into the MCM-41 structure. With increasing metal content the crystallinity and the BET surface of the samples decreased indicating the limitations of the procedure. FTIR measurements revealed the presence of Lewis acid sites in all types of our materials while in case of Al-MCM-41and Cu/Fe-MCM-41 also Broensted acidity. Only copper containing and the bimetallic Cu/Fe sample showed redox behavior, Co containing samples even with higher metal content can be reduced over 970 K.

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