Extraction of iron, cobalt, nickel and copper with dibenzyl sulfoxide solution in toluene

The dependence of the distribution ratio of the metal on the concentration of hydrochloric of nitric acid was examined for Fe, Co, Ni and Cu extraction with 0.05M solution of dibenzylsulfoxide in toluene. Iron is extracted considerably more than the other metals, and is better extracted from hydrochloric acid than from nitric acid. The separation factor αFe/M (for 8M-HCl) is of the order of 104; this is not sufficient for a separation of trace quantities of iron from Co, Ni and Cu, but even at lower concentrations of HCl (e.g., 5M) the values is high enough for extraction chromatographic separation. The composition of the iron solvate extracted from HCl or LiCl medium was determined to be HFeCl4.2 B (B = dibenzyl sulfoxide).

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Metal complexes of 1,10-Phenanthroline derivatives. III. Complexes of 1,10-Phenanthroline-2-amidoxime

Australian Journal of Chemistry ◽

10.1071/ch9701545 ◽

1970 ◽

Vol 23 (8) ◽

pp. 1545 ◽

Cited By ~ 12

Author(s):

HA Goodwin ◽

FE Smith

Keyword(s):

Metal Complexes ◽

The Other ◽

Copper Salts ◽

Iron Cobalt ◽

Cobalt Nickel ◽

Binuclear Structure ◽

Paramagnetic Complexes

Complexes of 1,l0-phenanthroline-2-amidoxime with iron, cobalt, nickel, and copper salts are described. Bis-ligand, six-covalent complexes were obtained with all metals. The iron(11) complex is spin-paired while the cobalt(11) and nickel(11) complexes are spin-free. Two series of mono-ligand complexes were obtained with copper(11). One of these consists of green, paramagnetic complexes of the uncharged ligand, and the other of brown, diamagnetic complexes of the deprotonated ligand. Salts of the two series are readily interconvertible. A binuclear structure is proposed for the cation in both series. Deprotonation of the bis-ligand cobalt(11) complex is accompanied by oxidation and cobalt(111) complexes of both the uncharged and the deprotonated ligand were obtained.

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Turnover and Distribution of 131Iodine-Labelled Human Fibrinogen

Thrombosis and Haemostasis ◽

10.1055/s-0038-1654837 ◽

1964 ◽

Vol 11 (02) ◽

pp. 404-422 ◽

Cited By ~ 10

Author(s):

Annemarie Amris ◽

C. J Amris

Keyword(s):

Body Weight ◽

Cancer Patient ◽

Distribution Ratio ◽

Half Life ◽

Fibrinolytic Activity ◽

The Other ◽

Turnover Rates ◽

Human Fibrinogen ◽

Coagulation Defects ◽

Fractional Turnover

Summary14 patients (5 diabetics with arteriosclerotic complications, 4 patients with thrombo-embolic disease, 4 with cirrhosis, coagulation defects and increased fibrinolytic activity, and 1 cancer patient) and 3 control patients were subjected to turnover studies with 13iodine labelled human fibrinogen.Half-life times in the control patients were found to be 4 days, the fractional turnover rates 19–23 per cent, of intravascular fibrinogen per day, and the absolute turnover 0.02 to 0.06 gm per day per kg. body weight. The other patient’s half-life times and turnover rates varied considerably from 0.9–5.5 days, 13–160 per cent, per day of intravascular fibrinogen and 0.02–0.4 gm per day per kg. body weight respectively.As fibrinogen unlike other proteins subjected to turnover studies, is converted to fibrin, it is not possible to measure the true intra-extravascular distribution ratio of fibrinogen. But intravascular fibrinogen could be approximated to constitute 68–99 per cent, of the total fibrinogen. There is justification in believing that fibrinogen is degradated through a continuous coagulation in equilibrium with fibrinolysis, and that the organism contains a greater mass of fibrin, the “fibrin pool”. Considerations of the turnover mechanism can however only be hypothetical.

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Extraction of rare earth metals from trichloroacetate solutions in the presence of linear polyoxonium compounds

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19911585 ◽

1991 ◽

Vol 56 (8) ◽

pp. 1585-1592 ◽

Cited By ~ 2

Author(s):

Petr Vaňura

Keyword(s):

Rare Earth ◽

Nonionic Surfactant ◽

Separation Factor ◽

Rare Earth Metals ◽

Extraction Constants ◽

Distribution Constants ◽

Factor Α

Extraction of rare earth metals from lithium trichloroacetate solutions ( 1.20-2.88 mol l-1) with solutions of the commercial nonionic surfactant Slovafol 909 (p-nonylphenylnonaethylene glycol) in chloroform and dichloromethane was investigated. The extraction constants as well as the Slovafol 909 distribution constants were determined in the water-dichloromethane and water-chloroform systems. The lanthanide distribution ratios decrease with their atomic numbers first rather rapidly (approximately to Sm): the separation factor αSmLa = 1.54 and 1.87 in dichloromethane and in chloroform, respectively; for lanthanides with higher atomic numbers the drop is less pronounced (αLuLa = 2.42 and 2.85 in the two solvents, respectively).

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Extraction Kinetics of Nitric Acid from the Nitric Acid-Hydrochloric Acid-Potassium Chloride Solution by Tributyl Phosphate

Separation and Purification Technology ◽

10.1016/j.seppur.2021.118984 ◽

2021 ◽

pp. 118984

Author(s):

Lei Su ◽

Baicheng Pan ◽

Ze Sun ◽

Ping Song ◽

Xingfu Song

Keyword(s):

Nitric Acid ◽

Hydrochloric Acid ◽

Potassium Chloride ◽

Tributyl Phosphate ◽

Chloride Solution ◽

Potassium Chloride Solution ◽

Extraction Kinetics ◽

Kinetics Of

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ChemInform Abstract: CARBENE COMPLEXES. PART 12. ELECTRON-RICH OLEFIN-DERIVED NEUTRAL MONO- AND BIS-(CARBENE) COMPLEXES OF LOW-OXIDATION-STATE MANGANESE, IRON, COBALT, NICKEL, AND RUTHENIUM

Chemischer Informationsdienst ◽

10.1002/chin.197807296 ◽

1978 ◽

Vol 9 (7) ◽

Author(s):

M. F. LAPPERT ◽

P. L. PYE

Keyword(s):

Oxidation State ◽

Iron Cobalt ◽

Carbene Complexes ◽

Cobalt Nickel ◽

Low Oxidation State

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On the Dissolution of Metals in Ionic Liquids 1. Iron, Cobalt, Nickel, Copper, and Zinc

Sustainable Chemistry ◽

10.3390/suschem2010005 ◽

2021 ◽

Vol 2 (1) ◽

pp. 63-73

Author(s):

Jéssica D. S. Vicente ◽

Domingas C. Miguel ◽

Afonso M. P. Gonçalves ◽

Diogo M. Cabrita ◽

José M. Carretas ◽

...

Keyword(s):

Ionic Liquids ◽

Redox Potential ◽

Final State ◽

Iron Cobalt ◽

Influence Of Temperature ◽

Dissolution Reaction ◽

Cobalt Nickel ◽

Iron Metal ◽

Copper And Zinc ◽

Nickel Copper

Ionic liquids are critical reagents for science and technical processes nowadays. Metals are the most used reagents in the industry. It is crucial to have a deeper understanding of how ionic liquids and metals could interact. In this article the interaction of those two families of compounds is accessed. The dissolution (reaction) of metals with ionic liquids is studied, namely the influence of temperature, redox potential, and availability of an oxidant in the process. The final state achieved by the iron metal samples was also addressed by Mössbauer spectroscopy.

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IX. The electric conductivity of nitric acid

Philosophical Transactions of the Royal Society of London. Series A, Containing Papers of a Mathematical or Physical Character ◽

10.1098/rsta.1898.0009 ◽

1898 ◽

Vol 191 ◽

pp. 365-398 ◽

Cited By ~ 6

Keyword(s):

Nitric Acid ◽

Physical Properties ◽

Nitrous Acid ◽

Internal Resistance ◽

The Other ◽

Reasonable Degree ◽

Mineral Acids ◽

Artificial Illumination ◽

The Subject ◽

Deep Green

Of the commoner mineral acids the chemical changes of Nitric Acid, from their evident complexity, have formed the subject of numerous memoirs, while those of sulphuric acid, from their assumed simplicity, have been to some degree neglected; on the other hand, the physical properties of the latter have been studied with considerable elaboration, while those of the former have been passed over, doubtless on account of the corrosive nature of the acid and the difficulty of preparing and preserving it in a reasonable degree of purity. Further, with certain exceptions, the alterations in physical properties induced by the products of reduction, be they nitrogen peroxide or nitrous acid, either singly or conjointly, have attracted but little attention, though it is a common matter of observation that the current intensity of a Grove’s or other cell containing nitric acid remains constant, even though the fuming acid, originally colourless or red, has become of a deep green tint. It is more than probable that of the factors of Ohm’s law, both the E. M. F. and internal resistance are continually varying. At the earliest stages of the enquiry it was found that the passage of a few bubbles of nitric oxide gas into a considerable volume of nitric acid produced an alteration of one percent, in the resistance, and the same result could be effected to a less degree by exposure to sunlight, and to a still less degree by exposure to artificial illumination. Therefore, we determined to investigate the alterations of conductivity produced by changes of concentration and temperature in samples of acid purified with necessary precautions, more especially as former workers upon the subject have either used samples of acid confessedly impure, or have been silent as to any method of purification, or have adopted no special care in dealing with a substance so susceptible of polarisation.

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