Synthesis of mesoporous zeolite catalysts by in situ formation of carbon template over nickel nanoparticles

Jacob Oskar Abildstrøm, Marina Kegnæs, Glen Hytoft, Jerrik Jørgen Mielby, Søren Kegnæs

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Abstract

A novel synthesis procedure for the preparation of the hierarchical zeolite materials with MFI structure based on the carbon templating method with in situ generated carbon template is presented in this study. Through chemical vapour deposition of coke on nickel nanoparticles supported on silica oxide, a carbon-silica composite is obtained and exploited as a combined carbon template/silica source for zeolite synthesis. This approach has several advantages in comparison with conventional carbon templating methods, where relatively complicated preparative strategies involving multistep impregnation procedures and rather expensive chemicals are used. Removal of the carbon template by combustion results in zeolite single crystals with intracrystalline pore volumes between 0.28 and 0.48 cm3/g. The prepared zeolites are characterized by XRD, SEM, TEM and physisorption analysis. The isomerization and cracking of n-octane is chosen as a model test reaction and the mesoporous zeolite catalyst is found to exhibit higher activity than the conventional catalyst.
Original languageEnglish
JournalMicroporous and Mesoporous Materials
Volume225
Pages (from-to)232-237
ISSN1387-1811
DOIs
Publication statusPublished - 2016

Keywords

  • Carbon templating
  • Cracking
  • Hierarchical zeolites
  • Isomerization
  • Metal nanoparticles

Cite this

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title = "Synthesis of mesoporous zeolite catalysts by in situ formation of carbon template over nickel nanoparticles",
abstract = "A novel synthesis procedure for the preparation of the hierarchical zeolite materials with MFI structure based on the carbon templating method with in situ generated carbon template is presented in this study. Through chemical vapour deposition of coke on nickel nanoparticles supported on silica oxide, a carbon-silica composite is obtained and exploited as a combined carbon template/silica source for zeolite synthesis. This approach has several advantages in comparison with conventional carbon templating methods, where relatively complicated preparative strategies involving multistep impregnation procedures and rather expensive chemicals are used. Removal of the carbon template by combustion results in zeolite single crystals with intracrystalline pore volumes between 0.28 and 0.48 cm3/g. The prepared zeolites are characterized by XRD, SEM, TEM and physisorption analysis. The isomerization and cracking of n-octane is chosen as a model test reaction and the mesoporous zeolite catalyst is found to exhibit higher activity than the conventional catalyst.",
keywords = "Carbon templating, Cracking, Hierarchical zeolites, Isomerization, Metal nanoparticles",
author = "Abildstr{\o}m, {Jacob Oskar} and Marina Kegn{\ae}s and Glen Hytoft and Mielby, {Jerrik J{\o}rgen} and S{\o}ren Kegn{\ae}s",
year = "2016",
doi = "10.1016/j.micromeso.2015.12.015",
language = "English",
volume = "225",
pages = "232--237",
journal = "Microporous and Mesoporous Materials",
issn = "1387-1811",
publisher = "Elsevier",

}

Synthesis of mesoporous zeolite catalysts by in situ formation of carbon template over nickel nanoparticles. / Abildstrøm, Jacob Oskar; Kegnæs, Marina; Hytoft, Glen; Mielby, Jerrik Jørgen; Kegnæs, Søren.

In: Microporous and Mesoporous Materials, Vol. 225, 2016, p. 232-237.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Synthesis of mesoporous zeolite catalysts by in situ formation of carbon template over nickel nanoparticles

AU - Abildstrøm, Jacob Oskar

AU - Kegnæs, Marina

AU - Hytoft, Glen

AU - Mielby, Jerrik Jørgen

AU - Kegnæs, Søren

PY - 2016

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N2 - A novel synthesis procedure for the preparation of the hierarchical zeolite materials with MFI structure based on the carbon templating method with in situ generated carbon template is presented in this study. Through chemical vapour deposition of coke on nickel nanoparticles supported on silica oxide, a carbon-silica composite is obtained and exploited as a combined carbon template/silica source for zeolite synthesis. This approach has several advantages in comparison with conventional carbon templating methods, where relatively complicated preparative strategies involving multistep impregnation procedures and rather expensive chemicals are used. Removal of the carbon template by combustion results in zeolite single crystals with intracrystalline pore volumes between 0.28 and 0.48 cm3/g. The prepared zeolites are characterized by XRD, SEM, TEM and physisorption analysis. The isomerization and cracking of n-octane is chosen as a model test reaction and the mesoporous zeolite catalyst is found to exhibit higher activity than the conventional catalyst.

AB - A novel synthesis procedure for the preparation of the hierarchical zeolite materials with MFI structure based on the carbon templating method with in situ generated carbon template is presented in this study. Through chemical vapour deposition of coke on nickel nanoparticles supported on silica oxide, a carbon-silica composite is obtained and exploited as a combined carbon template/silica source for zeolite synthesis. This approach has several advantages in comparison with conventional carbon templating methods, where relatively complicated preparative strategies involving multistep impregnation procedures and rather expensive chemicals are used. Removal of the carbon template by combustion results in zeolite single crystals with intracrystalline pore volumes between 0.28 and 0.48 cm3/g. The prepared zeolites are characterized by XRD, SEM, TEM and physisorption analysis. The isomerization and cracking of n-octane is chosen as a model test reaction and the mesoporous zeolite catalyst is found to exhibit higher activity than the conventional catalyst.

KW - Carbon templating

KW - Cracking

KW - Hierarchical zeolites

KW - Isomerization

KW - Metal nanoparticles

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JO - Microporous and Mesoporous Materials

JF - Microporous and Mesoporous Materials

SN - 1387-1811

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