Size control of rhodium particles of silica-supported catalysts using water-in-oil microemulsion

Masahiro Kishida, Toshiaki Hanaoka, Won Young Kim, Hideo Nagata, Katsuhiko Wakabayashi

研究成果: Contribution to journalArticle査読

30 被引用数 (Scopus)

抄録

Effects of components of water-in-oil microemulsions on rhodium particle sizes of silica-supported rhodium catalysts were investigated in the catalyst preparation method using microemulsion. In the case of the microemulsion of polyoxyethylene(23)dodecyl ether/n-alcohols/RhCl 3 aq., the rhodium particle size increased from 3.4 to 5.0 nm as the specific permittivity of the organic solvent increased. The chain length of hydroghilic group of polyoxyethylene-p-nonylphenyl ether (n = 5 to 15) employed as surfactants had an effect on the rhodium particle size where the rhodium size ranged between 2.0 and 3.6 nm. The rhodium particle size was 1.5 nm in the case of sodium bis(2-ethylhexyl) sulfocuccinate and this value was found to be the smallest. These results could be interpreted in terms of the adsorption of the surfactant on rhodium-hydrazine particle surface.

本文言語英語
ページ(範囲)347-350
ページ数4
ジャーナルApplied Surface Science
121-122
DOI
出版ステータス出版済み - 11 1997

All Science Journal Classification (ASJC) codes

  • 化学 (全般)
  • 凝縮系物理学
  • 物理学および天文学(全般)
  • 表面および界面
  • 表面、皮膜および薄膜

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