Selective Liquid-Liquid Extraction of Iron with 2-Thenoyltifluoroacetone-Xylene.  Application to Homogeneous Reactor Solutions

Moore, F. L.; Fairman, William D.; Ganchoff, J. G.; Surak, John G.

doi:10.1021/ac60151a023

Cited by 30 publications

(8 citation statements)

References 19 publications

(3 reference statements)

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“…Erratic behavior of tracer niobium in the TTA extraction has been reported, especially at low acidity (12). As shown by Moore (10), and substantiated in this laboratory, the addition of peroxide greatly decreases the extraction of niobium.…”

supporting

confidence: 50%

Correction- Iron Exchange Chromatography of Amino Acids. Analysis of Diffusion(Mass Transfer) Mechanisms

Hamilton¹,

Bogue²,

Anderson³

1961

Anal. Chem.

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supporting

confidence: 50%

Correction- Iron Exchange Chromatography of Amino Acids. Analysis of Diffusion(Mass Transfer) Mechanisms

Hamilton¹,

Bogue²,

Anderson³

1961

Anal. Chem.

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“…Iron was separated from 100-L aliquots of whole blood and dissolved in 1% (by vol) HCl:H 2 O to bring the analyzed iron concentration to 2 g/mL (27,28). The 58 Fe: 54 Fe and 57 Fe: 54 Fe ratios of the dilute HCl solutions were determined by using inductively coupled plasma mass spectrometry (PlasmaQuad3 with PlasmaScreen option; Thermo Elemental, Franklin, MA).…”

Section: Analysis Of Isotopic Composition Of Blood Samplesmentioning

confidence: 99%

Determination of iron absorption from intrinsically labeled microencapsulated ferrous fumarate (sprinkles) in infants with different iron and hematologic status by using a dual-stable-isotope method

Tondeur

Schauer

Christofides

et al. 2004

The American Journal of Clinical Nutrition

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“…Extraction results are shown in Table II for BPHA which was used by Alimarin and Petrukhin (1962) for the analytical extraction of Nb from chlorideand fluoride-free H2SO4 solutions. The table also gives results for TTA which was reported by Moore et al (1959) to extract micro amounts of Nb from chlorideand fluoride-free HNOs solutions. Although these extractants were reported to function well in analytical separations at low metal concentrations and high Nb/Ti ratios, these results indicate low Nb extraction from solutions having high Ti concentrations and low Nb/Ti ratios.…”

Section: Resultsmentioning

confidence: 99%

Extraction of Trace Niobium from Titanium Sulfate Solutions

Bonsack¹

1971

Product R&D

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Niobium, a trace impurity that adversely affects the electrical properties of high purity titanium dioxide and titanates, was removed by liquid-liquid extraction from concentrated, industrial titanium sulfate solutions containing 30 to 70 grams of Ti per liter and 50 to 115 mg of Nb per liter. Addition of HCI or HF was necessary to obtain high niobium extractions and high Nb/Ti separation factors. Data for 10 organic extractants are reported. Cyclohexanone was the most efficient extractant for H2SO4-HF solutions; one extraction removed 98% of the niobium with a titanium loss of less than 2%. Diisobutyl carbinol was the most efficient extractant for the H2SO4-HCI system; one extraction removed 92% of the niobium with a titanium loss of 10%.Ilmenite ore is used as a raw material in the commercial production of titanium dioxide by the "sulfate" process. Many impurities in the ore are removed from the titanium dioxide during processing, but the Nb/Ti ratio remains unchanged. The niobium content of titanium dioxide produced from ilmenite will therefore contain about 0.1 wt % Nb depending on the source of ilmenite. Company, "Baker" CHO Cyclohexanone J. T. Baker Chemical Company, reagent DBBP Dibutyl butylphosphonate Mobil Chemical Co. DIBC Diisobutyl carbinol (2,6-dimethyl-4-heptanol) J. T. Baker Chemical Company, "Baker" DIBK Diisobutyl ketone (2,6-dimethyl-4-heptanone) J. T. Baker Chemical Company, practical EHPA D i (2-ethy lhexyl) phosphoric acid Union Carbide Corp. LA-1 AT-dodecenyl (trialkylmethyl) amine Rohm and Haas Co. MIBK Methyl isobutyl ketone J. T. Baker Chemical Company, reagent TBP Tributyl phosphate J. T. Baker Chemical Company, practical TOPO Trioctylphosphine oxide Eastman Kodak Co., Eastman grade TTA 2-Thenoyltrifluoro acetone [4,4,4-trifluoro-l-(2-thienyl) 1,3-but anedione ] J. T. Baker ChemicalCompany, reagent 20 minutes were used to ensure near-equilibrium, especially for the more highly concentrated and viscous systems. The Nb content in the aqueous phase was determined for several extraction systems after shaking for 5, 20, and 40 minutes.In each case, no further extraction occurred after 20 minutes.

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Selective Liquid-Liquid Extraction of Iron with 2-Thenoyltifluoroacetone-Xylene. Application to Homogeneous Reactor Solutions

Cited by 30 publications

References 19 publications

Correction- Iron Exchange Chromatography of Amino Acids. Analysis of Diffusion(Mass Transfer) Mechanisms

Correction- Iron Exchange Chromatography of Amino Acids. Analysis of Diffusion(Mass Transfer) Mechanisms

Determination of iron absorption from intrinsically labeled microencapsulated ferrous fumarate (sprinkles) in infants with different iron and hematologic status by using a dual-stable-isotope method

Extraction of Trace Niobium from Titanium Sulfate Solutions

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