Results 1 to 10 of about 28,704 (278)

Determination of the parameters of thermodynamic stability constants of bromide complexes of rare earth metals for modeling the optimal regimes of hydrometallurgical extraction [PDF]

Arab Journal of Basic and Applied Sciences, 2022
Determination of the thermodynamic parameters of complex compounds of rare earth metals in aqueous solutions is of considerable interest for understanding the hydrometallurgical processes associated with the extraction and separation of yttrium and ...
Fialkovsky Igor Sergeevich, Litvinova Tatiana Evgenievna, Lutsky Denis Sergeevich, Alexeev Andrey Alexandrovich   +3 more
doaj   +3 more sources

18-Crown-6 and Dibenzo-18-crown-6 Assisted Extraction of Cesium from Water into Room Temperature Ionic Liquids and Its Correlation with Stability Constants for Cesium Complexes [PDF]

Molecules, 2009
The pH-profiles of the extraction of Cs+ into four conventional (1-butyl-3-methylimidazolium hexafluorophosphate and bis[trifluoromethyl)sulphonyl]imides of 1-butyl-3-methylimidazolium, 1-hexyl-3-methylimidazolium, and 1-(2-ethylhexyl)-3 ...
Igor Vladimirovich Pletnev, Vladimir Georgyevich Krasovsky, Konstantin Ivanovich Popov, Irina Ivanovna Torocheshnikova, Svetlana Valeryevna Smirnova, Andrey Grigoryevich Vendilo, Dmitry Ivanovich Djigailo   +6 more
doaj   +5 more sources

Distribution of micro-amounts of europium in the two-phase water-HCl-nitrobenzene-N,N'-dimethyl-N,N'-diphenyl-2,6-dipicolinamide-hydrogen dicarbollylcobaltate extraction system [PDF]

Journal of the Serbian Chemical Society, 2009
Extraction of micro-amounts of europium by a nitrobenzene solution of hydrogen dicarbollylcobaltate (H+B-) in the presence of N,N'-dimethyl- -N,N'-diphenyl-2,6-dipicolinamide (MePhDPA, L) was investigated.
Makrlík Emanuel, Vaňura Petr, Selucký Pavel, Babain Vasily A., Smirnov Ivan V.   +4 more
doaj   +5 more sources

Solvent extraction of trivalent europium and americium into nitrobenzene by using hydrogen dicarbollylcobaltate and tetraisopropyl[oxybis(2,1-ethanediyliminocarbonyl)]-bisphosphoramidate [PDF]

Journal of the Serbian Chemical Society, 2018
Solvent extraction of micro-amounts of Eu3+ and Am3+ from water into nitrobenzene by means of a mixture of hydrogen dicarbollylcobaltate (H+B-) and tetraisopropyl[oxybis(2,1-ethanediyliminocarbonyl)]-bisphosphoramidate (L) was studied.
Makrlík Emanuel, Vaňura Petr, Selucký Pavel, Brusko Vasiliy   +3 more
doaj   +3 more sources

Determination of the Stability Constants of Crown Ether Complexes With Protonated Amines by Solvent Extraction [PDF]

Bulletin of the Chemical Society of Japan, 1985
Abstract Stability constants of crown ether complexes with protonated primary amines were determined by the solvent extraction method. Stability constants between protonated amines(AH+) and 18-crown-6(L), logKAHL, were found to be 0.4, 0.15, 0.1, −0.05, and −0.1 for protonated methylamine, ethylamine, propylamine, butylamine, and iso ...
Hideyuki Noguchi, Masaki Yoshio
exaly   +2 more sources

Activation of the Aromatic Core of 3,3'-(Pyridine-2,6-diylbis(1H-1,2,3-triazole-4,1-diyl))bis(propan-1-ol)-Effects on Extraction Performance, Stability Constants, and Basicity. [PDF]

Inorg Chem, 2019
Abstract The “CHON” compatible water-soluble ligand 3,3′-(pyridine-2,6-diylbis(1H-1,2,3-triazole-4,1-diyl))bis(propan-1-ol) (PTD) has shown promise for selectively stripping actinide ions from an organic phase containing both actinide and lanthanide ions, by preferential complexation of the former. Aiming at improving its complexation
Weßling P, Trumm M, Macerata E, Ossola A, Mossini E, Gullo MC, Arduini A, Casnati A, Mariani M, Adam C, Geist A, Panak PJ.   +11 more
europepmc   +6 more sources

Optimization of Ethanolic Extraction of Asiaticoside and Asiatic Acid: A Stability Study and Correlation of Dielectric Constant

Applied Food Research
This study optimized the extraction of asiaticoside and asiatic acid from Centella asiatica using an ultrasonic-assisted extraction method. The research focused on ethanol concentration, extraction temperature, and extraction duration to maximize yield efficiency.
Teerin Chysirichote
exaly   +3 more sources

Solvent extraction of Ca2+, Ba2+, Cu2+, Zn2+, Cd2+, Pb2+, UO22+, Mn2+, Co2+ and Ni2+ into nitrobenzene using strontium dicarbol-lylcobaltate and tetra-tert-butyl p-tert-butylcalix[4]arene tetraacetate [PDF]

Journal of the Serbian Chemical Society, 2008
The exchange extraction constants corresponding to the general equilibrium M2+(aq) + SrL2+(nb) D ML2+ (nb) + Sr2+ (aq) occurring in the two-phase water–nitrobenzene system (M2+ = Ca2+, Ba2+, Cu2+, Zn2+, Cd2+, Pb2+, UO22+, Mn2+, Co2+ or Ni2+; L = tetra ...
E. MAKRLÍK, J. BUDKA, P. VAŇURA, P. SELUCKÝ   +3 more
doaj   +3 more sources

Studies on the separation of some transition metals using trialkylimidazole as selective extractant [PDF]

E3S Web of Conferences, 2017
The possibility of Cu(II) ion separation from an equimolar Cu-Cd-Zn tertiary mixture by solvent extraction was investigated. The process was based on the use of 1,2,4-trimethylimidazole (TMI) and 1- decyl-2,4-dimethylimidazole (DDMI) as extractant ...
Radzyminska-Lenarcik Elzbieta, Witt Katarzyna   +1 more
doaj   +2 more sources

Calcium ionophore I as very effective extraction agent for trivalent europium and americium [PDF]

Journal of the Serbian Chemical Society, 2019
The solvent extraction of microamounts of Eu3+ and Am3+ from water into nitrobenzene by means of a mixture of hydrogen dicarbollylcobaltate (H+B-) and calcium ionophore I (marked as the ligand L) was investigated. The equilibrium data have been explained
Makrlík Emanuel, Vaňura Petr
doaj   +1 more source