Chromium(VI) Complexation with Triisooctylamine in Organic Solvents.

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概要

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• Liquid–liquid extraction of chromium(VI) from chromic acid solutions with triisooctylamine (tris(6-methylheptyl)amine, abbrev. to TIOA) dissolving in various organic solutions has been studied. The reaction between chromium(VI) and TIOA in <I>o</I>-xylene has been discussed in detail. It has been found that dichromate ion and hydrogen chromate ion coexist in the system, based on the extraction data and the IR and UV-visible spectra of the TIOA-chromium salt. The chromium extraction equilibria can be expressed as:<BR>‾TIOA+H<SUP>+</SUP>+HCrO<SUB>4</SUB><SUP>−</SUP>\rightleftarrows‾(TIOAH)HCrO<SUB>4</SUB><BR>2‾TIOA+2H<SUP>+</SUP>+CR<SUB>2</SUB>O<SUB>7</SUB><SUP>2</SUP>\rightleftarrows‾(TIOAH)<SUB>2</SUB>CR<SUB>2</SUB>O<SUB>7</SUB><BR>The extraction constants are obtained.

• 公益社団法人 日本化学会の論文

著者

• Kuo Jen-feng

  Department Of Chemical Engineering National Cheng-kung University

• Chen Chuh-Yung

  Department of Chemical Engineering, National Cheng Kung University

• Huang Yaou-Huei

  Department of Chemical Engineering, National Cheng Kung University

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• Extraction of chromium(VI) from acid solutions by tri-iso-octylamine.
• Chromium(VI) Complexation with Triisooctylamine in Organic Solvents.

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