Au(III)担持MIBKからの金超微粒子の還元析出反応機構

DOI Web Site Web Site 被引用文献1件

書誌事項

タイトル別名
  • Mechanism of Reductive Stripping-Precipitation of Ultrafine Au Particles from Au(III)-Loaded MIBK
  • Au(3)担持MIBKからの金超微粒子の還元析出反応機構
  • Au 3 タンジ MIBK カラ ノ キン チョウ ビリュウシ ノ カンゲン

この論文をさがす

抄録

Experimental studies were conducted to elucidate a possible mechanism for the reductive stripping-precipitation of ultrafine particulates of Au from Au(III)-loaded MIBK. The principal findings are as follows: (1) Under the irradiation of day light, the yellow color of Au(III)-loaded MIBK fades gradually at the same time, the equilibrium potential shifts towards the noble direction, suggesting the decomposition of (H+MIBKAuCl4−)o into (H+MIBKAuCl2(OH)2−)o or (H+MIBKAuCl2−)o via a photochemical route. (2) Water acts as a reductant of Au(III)-loaded MIBK under the catalytic action of a small amount of a suitable reducing agent to precipitate ultrafine particulates of Au. (3) The role of H+ or Cl− on the reductive stripping-precipitation reactions was also studied. The rate of reductive stripping-precipitation of Au increases with the increase in temperature under the presence of NaCl, exhibiting an activation energy of 43.7 kJ·mol−1.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 57 (6), 645-651, 1993

    公益社団法人 日本金属学会

被引用文献 (1)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ