Effect of the matrix in niobium-based aerogel catalysts for the selective oxidation of olefins with hydrogen peroxide

  • Somma F
  • Canton P
  • Strukul G
  • 2

    Readers

    Mendeley users who have this article in their library.
  • N/A

    Citations

    Citations of this article.

Abstract

The preparation of a series of mobium-based aerogel samples under acidic and basic conditions is reported. The effect of the matrix (SiO2, Al2O3, ZrO2) and of the gelation conditions (acidic or basic) on the surface area, the porosity, and the catalytic activity of the solids in the oxidation of different substrates with hydrogen peroxide is investigated. The amount of niobium is constant in all samples. The oxidation of unsubstituted (cyclooctene) and substituted (geraniol, nerol, and trans-2-pentene-1-ol) olefins is studied. The catalysts are moderately active but produce epoxides in good yields. The latter are influenced by the matrix properties (surface acidity and surface area). The preparation method makes it possible to prepare catalysts that are resistant to leaching and can be recycled several times without appreciable loss of activity. (C) 2004 Elsevier Inc. All rights reserved.

Author-supplied keywords

  • cyclohexene
  • cyclopentene
  • epoxidation
  • ft-ir
  • glutaraldehyde
  • hydrogen peroxide
  • liquid-phase oxidation
  • n2o5 catalysts
  • olefins
  • oxidation
  • silica mixed oxides
  • sol-gel
  • wo3/sio2
  • xerogels

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Authors

  • F Somma

  • P Canton

  • G Strukul

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free