Synthesis and characterization of zirconium containing mesoporous silicas I. Hydrothermal synthesis of Zr-MCM-41-type materials

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

92 Scopus citations

Abstract

Zirconium containing MCM-41-type has been synthesized by a near neutral route. Various solids, with Si/Zr molar ratios ranging from 20 to ∞, were prepared. All these solids have high surface area and good crystallinity. Addition of zirconium results in a linear increase of both the Lewis and Brönsted acidities. At least one-third of zirconium is at the surface or near the surface, probably in the form of [(≡Si-O)3Zr-O-] species. As a consequence, introduction of zirconium on the surface results in the appearance of a negative charge, compensated by sodium ions which can be exchanged.

Original languageEnglish (US)
Pages (from-to)269-276
Number of pages8
JournalMicroporous and Mesoporous Materials
Volume42
Issue number2-3
DOIs
StatePublished - Feb 2001
Externally publishedYes

Keywords

  • Acidity
  • Mesoporous silica
  • Zirconium
  • Zirconyl

ASJC Scopus subject areas

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

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