Extraction of titanium(IV)-pyrocatechol violet complex with tridodecylethylammonium bromide.
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概要
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The extraction equilibria and the fundamental conditions for extracting the titanium(IV)–Pyrocatechol Volet complex anion in a form of an ionic associate with tridodecylethylammonium bromide into carbon tetrachloride is described. The absorption maxima of the extracted complex occurs at 586 nm, the molar absorptivity and the distribution ratio being 5.17×10<SUP>4</SUP> dm<SUP>3</SUP> mol<SUP>−1</SUP> cm<SUP>−1</SUP> and 2.82×10<SUP>2</SUP>. The optimum pH range for the extraction is 5.1–6.4. The composition of the complex is estimated to be Ti(PV)<SUB>2</SUB>(R<SUB>3</SUB>R′N)<SUB>2</SUB>. The extraction constant would be:<BR><I>K</I><SUB>ex</SUB>=\frac[Ti(PV)<SUB>2</SUB>(R<SUB>3</SUB>R′N)<SUB>2</SUB>]<SUB>0</SUB>[Ti(PV)<SUB>2</SUB><SUP>2−</SUP>][R<SUB>3</SUB>R′N<SUP>+</SUP>]<SUP>2</SUP>,<BR>log<I>K</I><SUB>ex</SUB> obtained is 13.5. The interference of foreign ions is discussed.
- 公益社団法人 日本化学会の論文
著者
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Shimizu Tokuo
Department Of Applied Chemistry Faculty Of Engineering Utsunomiya University
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Sakai Kaoru
Department Of Environmental Chemistry Faculty Of Engineering University Of Utsunomiya
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Shijo Yoshio
Department Of Applied Chemistry Faculty Of Engineering Utsunomiya University
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Shijo Yoshio
Department of Environmental Chemistry, Faculty of Engineering, University of Utsunomiya
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