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

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

Research output: Contribution to journalArticle

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-SiO 2 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-SiO 2 catalysts prepared by changing the amount of silica produced were almost identical. Accordingly, the Rh particle diameter of Rh-SiO 2 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

Fingerprint

Microemulsions
Silicon Dioxide
Oils
Silica
Water
Catalysts
hydrazine
Hydrazine
Agglomeration
Metals
Ultrafine

All Science Journal Classification (ASJC) codes

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

Cite this

In situ immobilization of ultrafine particles synthesized in a water/oil microemulsion. / Hanaoka, Toshiaki; Hayashi, Hiroki; Tago, Teruoki; Kishida, Masahiro; Wakabayashi, Katsuhiko.

In: Journal of Colloid And Interface Science, Vol. 235, No. 2, 15.03.2001, p. 235-240.

Research output: Contribution to journalArticle

@article{c9121a15a6824a7a87a235dcc1df7452,
title = "In situ immobilization of ultrafine particles synthesized in a water/oil microemulsion",
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-SiO 2 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-SiO 2 catalysts prepared by changing the amount of silica produced were almost identical. Accordingly, the Rh particle diameter of Rh-SiO 2 catalysts could be controlled independently of Rh content by the ME method.",
author = "Toshiaki Hanaoka and Hiroki Hayashi and Teruoki Tago and Masahiro Kishida and Katsuhiko Wakabayashi",
year = "2001",
month = "3",
day = "15",
doi = "10.1006/jcis.2000.7353",
language = "English",
volume = "235",
pages = "235--240",
journal = "Journal of Colloid and Interface Science",
issn = "0021-9797",
publisher = "Academic Press Inc.",
number = "2",

}

TY - JOUR

T1 - In situ immobilization of ultrafine particles synthesized in a water/oil microemulsion

AU - Hanaoka, Toshiaki

AU - Hayashi, Hiroki

AU - Tago, Teruoki

AU - Kishida, Masahiro

AU - Wakabayashi, Katsuhiko

PY - 2001/3/15

Y1 - 2001/3/15

N2 - 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-SiO 2 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-SiO 2 catalysts prepared by changing the amount of silica produced were almost identical. Accordingly, the Rh particle diameter of Rh-SiO 2 catalysts could be controlled independently of Rh content by the ME method.

AB - 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-SiO 2 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-SiO 2 catalysts prepared by changing the amount of silica produced were almost identical. Accordingly, the Rh particle diameter of Rh-SiO 2 catalysts could be controlled independently of Rh content by the ME method.

UR - http://www.scopus.com/inward/record.url?scp=0035866477&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035866477&partnerID=8YFLogxK

U2 - 10.1006/jcis.2000.7353

DO - 10.1006/jcis.2000.7353

M3 - Article

VL - 235

SP - 235

EP - 240

JO - Journal of Colloid and Interface Science

JF - Journal of Colloid and Interface Science

SN - 0021-9797

IS - 2

ER -