Preparation and characterization of zirconium containing mesoporous silicas. II. Grafting reaction of tetraneopentyl zirconium on MCM-41 and characterization of the grafted species and of the resulting materials

Xu Xu Wang, Laurent Veyre, Frédéric Lefebvre*, Joël Patarin, Jean Marie Basset

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

Hydroxyl groups of MCM-41 dehydroxylated under vacuum at 500 °C react with tetraneopentyl zirconium, leading to the evolution of neopentane and the formation of organometallic species with the mean formula (?Si?O)2ZrNp2 which were fully characterized by physicochemical methods such as solid-state NMR, infrared spectroscopy, quantification of evolved gases and microanalysis. Decomposition of the resulting materials under vacuum, oxygen, water and hydrogen has been studied. The acid properties of the Zr-MCM-41 solids obtained by this way compare well to those of Zr-MCM-41 materials obtained by direct synthesis.

Original languageEnglish (US)
Pages (from-to)169-179
Number of pages11
JournalMicroporous and Mesoporous Materials
Volume66
Issue number2-3
DOIs
StatePublished - Dec 5 2003
Externally publishedYes

Keywords

  • Acidity
  • Mesoporous silica
  • Organometallic complex
  • Solid-state NMR
  • Zirconium

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials

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