In situ immobilization of ultrafine particles synthesized in a water/oil microemulsion

Toshiaki Hanaoka, Hiroki Hayashi, Teruoki Tago, Masahiro Kishida, Katsuhiko Wakabayashi

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14 Citations (Scopus)

Abstract

We investigated the in situ immobilization of ultrafine particles synthesized in a water/oil (w/o) microemulsion to silica for its possible application to supported metal catalysts. ZnS particles immobilized to silica by the ME method were consistent with those synthesized in a w/o microemulsion. Therefore, ZnS particles in a w/o microemulsion could be immobilized to silica without aggregation by this method. The relationship between the method of synthesizing Rh ultrafine particles in a w/o microemulsion and the diameter and diameter distribution of Rh particles immobilized to silica was studied. Rh-SiO2 catalysts with a sharp diameter distribution could be prepared by immobilizing Rh-hydrazine complex particles because these complex particles would be very stable in a w/o microemulsion. The Rh particle diameters of Rh-SiO2 catalysts prepared by changing the amount of silica produced were almost identical. Accordingly, the Rh particle diameter of Rh-SiO2 catalysts could be controlled independently of Rh content by the ME method.

Original languageEnglish
Pages (from-to)235-240
Number of pages6
JournalJournal of Colloid And Interface Science
Volume235
Issue number2
DOIs
Publication statusPublished - Mar 15 2001

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry

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