Results 1 to 10 of about 19,763 (236)

Contribution to the termodynamics of 1-(2-thiazolylazo)-2-naphthol in the water-nitrobenzene extraction system [PDF]

Journal of the Serbian Chemical Society, 2000
General relations among thermodynamic parameters characterizing chemical equilibria including species Н2А+, HA, H+ and A- in both phases of a two-phase water-nitrobenzene extraction system have been derived. From the extraction measurements, the
Makrlik Emanuel, Vaňura Petr
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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
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Contribution to the thermodynamics of 1-(2-thiazolylazo)-2-naphthol in the water-nitrobenzene extraction system [PDF]

Journal of the Serbian Chemical Society, 2000
General relations among thermodynamic parameters characterizing chemical equilibria including species H2A+, HA, H+ and A- in both phases of a two-phase water-nitrobenzene extraction system have been derived.
PETR VANURA, EMANUEL MAKRLIK
doaj   +1 more source

Extraction of Alkali-Metal Picrates by Calixarene Esters in the Water–Nitrobenzene Solvent System. The Medium Effect on the Partition and Extraction Processes

Supramolecular Chemistry, 2006
Based on distribution data involving alkali-metal (Na+, K+, Rb+ and Cs+) picrates in the presence and in the absence of calix[n]arene (n = 4, 6) esters, the extraction ability of these macrocycles in the water-nitrobenzene solvent system is established. Thus, partition and distribution constants in the mutually saturated solvents and ion-pair formation
Maria A. Pugliese, Maria Teresa Goitia, Mirta Montero, Alberto R. Casal, Angela F. Danil de Namor   +4 more
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Interfacial Behavior of Cs+, K+, Na+, and Rb+ Extraction in the Presence of Dibenzo-18-Crown‑6 from the Nitrobenzene–Water Biphasic System: Experimental, Quantum Chemical, and Molecular Dynamic Studies

ACS Omega, 2018
Rima Biswas, Pallab Ghosh, Tamal Banerjee, Sk. Musharaf Ali, Ashish Kumar Singha Deb   +4 more
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Solvent extraction of Ca2+, Ba2+, Cu2+, Zn2+, Cd2+, Pb2+, UO22+, Mn2+, Co2+ and Ni2+ into nitrobenzene using strontium dicarbollylcobaltate 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) ← →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 ...
Makrlík E., Budka J., Vaňura P., Selucký P.   +3 more
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Extraction of calcium from water into nitrobenzene using strontium dicarbollylcobaltate in the presence of 18-crown-6 [PDF]

Journal of the Serbian Chemical Society, 2000
From extraction experiments and g-activity measurements, the extraction constant corresponding to the equilibrium Ca2+(aq) + SrL2+(nb) « CaL2+(nb) + Sr2+(aq) taking place in the two-phase water-nitrobenzene system (L = 18-crown-6, aq = aqueous phase, nb =
EMANUEL MAKRLIK, PETR VANURA, MARCELA DANKOVA   +2 more
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Stability of the barium–benzo-15-crown-5 complex in nitrobenzene saturated with water [PDF]

Journal of the Serbian Chemical Society, 2006
From extraction experiments and g-activity measurements, the exchange extraction constant corresponding to the equilibrium Ba2+(aq) + SrL22+(nb) D BaL22+(nb) + Sr2+(aq) occurring in the two-phase water–nitrobenzene system (L =benzo-15-crown-5; aq ...
E. MAKRLÍK, P. VAŃURA
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Contribution to the thermodynamics of sc3+, y3+, la3+ and trivalent lanthanide cations in the two-phase water-nitrobenzene extraction system.

Acta chimica Slovenica, 2011
From the exchange extraction constants corresponding to the general equilibrium M3+(aq) + 3H+(nb) M3+(nb) + 3H+(aq) occurring in the two-phase water-nitrobenzene system (M3+ = Sc3+, Y3+, La3+, Ce3+, Pr3+, Nd3+, Sm3+, Eu3+, Gd3+, Tb3+, Dy3+, Ho3+, Er3+, Tm3+, Yb3+, Lu3+; aq = aqueous phase, nb = nitrobenzene phase), the individual extraction constants ...
Emanuel Makrlík, Petr Vaňura
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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