Nanoparticles of iron and vanadium oxides supported on iron substituted LDHs: Synthesis, textural characterization and their catalytic behavior in ethylbenzene dehydrogenation

Gabriela Carja, Yoshikazu Kameshima, Kiyoshi Okada

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

Nanostructured catalysts derived from nanoparticles of iron or vanadium oxides supported on the matrices of iron substituted hydrotalcite-like anionic clays (layered double hydroxides, LDHs) have been obtained and tested in the process of ethylbenzene dehydrogenation to styrene. A simple synthesis method based on the LDHs "memory effect" has been used to prepare the new oxides-anionic clay structures. TEM analysis shows that on the typical FeLDH particles (average size equal to 75 nm) smaller nanoparticles are supported; their average size is equal to 7 and 11 nm for Fe/FeLDH and V/FeLDH respectively. XPS analysis indicates the presence of Fe2O3 and V2O3 on the surface of the supported LDHs. N2 adsorption at 77 K reveals that the supported anionic clays have less accentuated mesoporous properties in comparison to the parent FeLDH matrix. The catalytic behavior of the samples is a function of the nature of the supported nanoparticles.

Original languageEnglish
Pages (from-to)541-547
Number of pages7
JournalMicroporous and Mesoporous Materials
Volume115
Issue number3
DOIs
Publication statusPublished - Nov 1 2008
Externally publishedYes

Fingerprint

Hydroxides
Vanadium
Ethylbenzene
vanadium oxides
Dehydrogenation
dehydrogenation
iron oxides
Oxides
clays
hydroxides
Clay
hydrotalcite
Iron
Nanoparticles
iron
nanoparticles
synthesis
Styrene
matrices
styrenes

Keywords

  • Anionic clays
  • Ethylbenzene dehydrogenation
  • Layered double hydroxides
  • Nanostructured catalysts

ASJC Scopus subject areas

  • Catalysis
  • Materials Science(all)

Cite this

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abstract = "Nanostructured catalysts derived from nanoparticles of iron or vanadium oxides supported on the matrices of iron substituted hydrotalcite-like anionic clays (layered double hydroxides, LDHs) have been obtained and tested in the process of ethylbenzene dehydrogenation to styrene. A simple synthesis method based on the LDHs {"}memory effect{"} has been used to prepare the new oxides-anionic clay structures. TEM analysis shows that on the typical FeLDH particles (average size equal to 75 nm) smaller nanoparticles are supported; their average size is equal to 7 and 11 nm for Fe/FeLDH and V/FeLDH respectively. XPS analysis indicates the presence of Fe2O3 and V2O3 on the surface of the supported LDHs. N2 adsorption at 77 K reveals that the supported anionic clays have less accentuated mesoporous properties in comparison to the parent FeLDH matrix. The catalytic behavior of the samples is a function of the nature of the supported nanoparticles.",
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author = "Gabriela Carja and Yoshikazu Kameshima and Kiyoshi Okada",
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T2 - Synthesis, textural characterization and their catalytic behavior in ethylbenzene dehydrogenation

AU - Carja, Gabriela

AU - Kameshima, Yoshikazu

AU - Okada, Kiyoshi

PY - 2008/11/1

Y1 - 2008/11/1

N2 - Nanostructured catalysts derived from nanoparticles of iron or vanadium oxides supported on the matrices of iron substituted hydrotalcite-like anionic clays (layered double hydroxides, LDHs) have been obtained and tested in the process of ethylbenzene dehydrogenation to styrene. A simple synthesis method based on the LDHs "memory effect" has been used to prepare the new oxides-anionic clay structures. TEM analysis shows that on the typical FeLDH particles (average size equal to 75 nm) smaller nanoparticles are supported; their average size is equal to 7 and 11 nm for Fe/FeLDH and V/FeLDH respectively. XPS analysis indicates the presence of Fe2O3 and V2O3 on the surface of the supported LDHs. N2 adsorption at 77 K reveals that the supported anionic clays have less accentuated mesoporous properties in comparison to the parent FeLDH matrix. The catalytic behavior of the samples is a function of the nature of the supported nanoparticles.

AB - Nanostructured catalysts derived from nanoparticles of iron or vanadium oxides supported on the matrices of iron substituted hydrotalcite-like anionic clays (layered double hydroxides, LDHs) have been obtained and tested in the process of ethylbenzene dehydrogenation to styrene. A simple synthesis method based on the LDHs "memory effect" has been used to prepare the new oxides-anionic clay structures. TEM analysis shows that on the typical FeLDH particles (average size equal to 75 nm) smaller nanoparticles are supported; their average size is equal to 7 and 11 nm for Fe/FeLDH and V/FeLDH respectively. XPS analysis indicates the presence of Fe2O3 and V2O3 on the surface of the supported LDHs. N2 adsorption at 77 K reveals that the supported anionic clays have less accentuated mesoporous properties in comparison to the parent FeLDH matrix. The catalytic behavior of the samples is a function of the nature of the supported nanoparticles.

KW - Anionic clays

KW - Ethylbenzene dehydrogenation

KW - Layered double hydroxides

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