Author: William G. ScribnerPublisher:
ISBN:
Category : Acetylacetonate
Languages : en
Pages : 90
Book Description
Solvent Extraction Study of Metal Fluoroacetylacetonates
Author: William G. ScribnerPublisher:
ISBN:
Category : Acetylacetonate
Languages : en
Pages : 90
Book Description
Solvent Extraction Study of Metal Fluoroacetylacetonates
Author: William Quernsey ScribnerPublisher:
ISBN:
Category : Acetylacetonate
Languages : en
Pages : 104
Book Description
The solvent extraction properties of 1,1,1-trifluoro-2,4-pentanedione (H(tfa)), 1,1,1,5,5,5-hexafluoro-2,4-pentanedione (H(hfa)), 1,1,1,2,2,6,6,6-octafluoro-3,5-hexanedione (H(ofhd)), 1,1,1,2,2,3,3,7,7,7-decafluoro-4,6-heptanedione (H(dfhd)), and 1,1,1,2,2,3,3-heptafluoro-7,7-dimethyl-4,6-octanedione (H(fod)) are described. Distribution ratio-pH curves or percent extracted-pH curves are presented for the extraction of copper, iron, beryllium, cobalt, zinc or other metal ions employing chloroform or benzene solutions of each ligand, and for the effective extraction of divalent and trivalent metals with butanol-H(tfa). Marked enhancement of extraction efficiency of divalent metal ions into chloroform or benzene via isobutylamine adduct formation is also described for most systems. The effect of increasing fluorocarbon chain length resulting in increasing ability to extract the divalent metals zinc and cobalt into chloroform or benzene without the aid of adduct formation is discussed, and extraction systems with the optimum ligand, H(dfhd), are characterized. Syntheses of H(dfhd), H(ofhd), and other ligands are reported, and the physical properties of these and various other fluorine-containing beta-diketones and certain toxicity studies are reviewed. Preliminary work on the direct reaction of ligands with metals in hydrocarbons is presented. (Author).
Solvent Extraction Study of Metal Fluoroacetylacetonates
Author: William G. ScribnerSolvent Extraction Study of Metal Fluoroacetylacetonates
Author: William G. ScribnerPublisher:
ISBN:
Category :
Languages : en
Pages : 113
Book Description
Results of a program to study the solvent extraction properties of trifluoroacetylacetone and hexafluoroacetylacetone are described. Log distribution-pH curves are presented for the extraction of iron(III), copper, beryllium, zinc, and cobalt with benzene-hexafluoroacetylacetone and with chloroform-hexafluoroacetylacetone; for the extraction of beryllium with benzene, chloroform, and toluene containing trifluoroacetylacetone; for the extraction of copper, cobalt, and beryllium with butanol-trifluoroacetylacetone; and for the extraction of chromium(III) with toluene-trifluoroacetylacetone. A survey of various solvent systems for the extraction of calcium with trifluoroacetylacetone and hexafluoroacetylacetone is also presented. For most systems, equilibration time studies and anion interference studies are described to aid in the establishment of analytically useful procedures. Acute toxicity studies on trifluoroacetylacetone and 2,2,6,6-tetramethylheptane-3,5-dione are described and permit the assignment of the rating 'toxic' to trifluoroacetylacetone and 'not toxic' to the other beta-diketone. (Author).
A Systematic Study of Solvent Extraction with Acetylacetone
Author: Anoop KrishenPublisher:
ISBN:
Category : Ketones
Languages : en
Pages : 146
Book Description
Acetylacetone as an Analytical Extraction Agent (thesis)
Author: John Franklin SteinbachPublisher:
ISBN:
Category : Chemistry
Languages : en
Pages : 130
Book Description
Solvent Extraction, Gas Chromatographic, and Spectroscopic Studies of Some Metal Fluoroacetylacetonates
Author: Gerald Prescott MoriePublisher:
ISBN:
Category : Chromatographic analysis
Languages : en
Pages : 524
Book Description
Solvent Extraction and Gas Chromatography of Metal Fluoroacetylacetonates
Author: James Royal StokelySymposium on Solvent Extraction in the Analysis of Metals
Author: Solvent Extraction
Author: Vladimir S KislikPublisher: Elsevier
ISBN: 0444537791
Category : Technology & Engineering
Languages : en
Pages : 573
Book Description
The main challenge in modern solvent extraction separation is that most techniques are mainly empirical, specific and particular for narrow fields of practice and require a large degree of experimentation. This concise and modern book provides a complete overview of both solvent extraction separation techniques and the novel and unified competitive complexation/solvation theory. This novel and unified technique presented in the book provides a key for a preliminary quantitative prediction of suitable extraction systems without experimentation, thus saving researchers time and resources. - Analyzes and compares both classical and new competitive models and techniques - Offers a novel and unified competitive complexation / solvation theory that permits researchers to standardize some parameters, which decreases the need for experimentation at R&D - Presents examples of applications in multiple disciplines such as chemical, biochemical, radiochemical, pharmaceutical and analytical separation - Written by an outstanding scientist who is prolific in the field of separation science