Solvent extraction separation of cobalt(II) with hexaacetatocalix(6)arene

Gupta, Anita; Khopkar, S. M.

doi:10.1016/0039-9140(95)01600-g

Cited by 21 publications

(27 citation statements)

References 5 publications

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“…10 5,11,17,23,29,35-Hexa-t-butyl-37,38,39,40,41,42, hexahydroxycalix (6)arene was prepared by dissolving about 10 g (0.666 mol) of p-t-butylphenol in 6 ml of 5 M KOH and 9.70 g of a 37% formaldehyde solution. The mixture was heated to 110 -120˚C for 2 h to give a light-yellow taffy-like precursor.…”

Section: Synthesis Of the Ligandmentioning

confidence: 99%

Solvent-Extraction Separation of Manganese(II) with Calixarene Substituted with an Acetyl Group at the Lower Rim

1999

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Section: Synthesis Of the Ligandmentioning

confidence: 99%

Solvent-Extraction Separation of Manganese(II) with Calixarene Substituted with an Acetyl Group at the Lower Rim

1999

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“…p-terc-butilcalix [6]areno/HTTA e (B) acetatocalix [6]areno/HTTA em clorofórmio 154 Figura 5.36 Influência do pH na extração do Eu(III) nos sistemas (A) pterc-butilcalix [8]areno/HTTA e (B) acetatocalix [8] Influência do pH na extração do U(VI) nos sistemas (A) p-terc-butilcalix [4]areno e (B) acetatocalix [4]areno em clorofórmio…”

Section: Influência Do Ph Na Extração Do Eu(iii) Nos Sistemas (A)unclassified

“…Espectro de absorção na região do UV-Vis do p-t-butilcalix [8]areno e do p-t-butilcalix [8] Espectro de absorção na região do UV-Vis do acetatocalix [4]areno e do acetatocalix [4]areno-HTTA em CHCl 3 (5,0x10 -3 mol/L)…”

unclassified

“…Influência do pH na extração do Eu(III) nos sistemas (A) p-terc-butilcalix [4]areno e (B) acetatocalix [4]areno em clorofórmio Figura 5.29 Influência do pH na extração do Eu(III) nos sistemas (A) p-terc-butilcalix [6]areno e (B) acetatocalix [6] …”

unclassified

“…Influência do pH na extração do U(VI) nos sistemas (A) p-terc-butilcalix [8]areno e (B) acetatocalix [8] Espectros no infravermelho das membranas 1,2 μm impregnadas com (A) p-terc-butilcalix [4]areno e (B) acetatocalix [4]areno 164 Figura 5.47 Espectros no infravermelho das membranas 1,2 μm impregnadas com (A) p-terc-butilcalix [6]areno e (B) acetatocalix [6]areno 164 Figura 5.48 Espectros no infravermelho das membranas 1,2 μm impregnadas com (A) p-terc-butilcalix [8]areno e (B) acetatocalix [8] Micrografias obtidas por AFM da membrana com tamanhos de poros 1,2 μm impregnada com p-terc-butilcalix [6]areno; (A) imagem tridimensional e (B) imagem topográfica…”

unclassified

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Recuperação de Eu(III) e U(VI) de efluentes aquosos utilizando a técnica de membranas líquidas suportadas (MLS) e macrocíclicos como agentes extratores

Santos¹

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Synergistic Extraction of Cobalt (II) by β Hydroxy Naphthaldoxime and Neutral Donors

Banerjee¹,

Basu²

2004

Annali di Chimica

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Liquid - liquid extraction of Cobalt (II) from aqueous hydrochloric acid medium by the use of oxime derivative of beta-hydroxy naphthaldehyde in o-xylene medium is being reported. The ligand was synthesized and characterized in our laboratory. The typical pH range of extraction of Co (II) by the ligand - donor combination was seen to be between 8 - 9. The effect of different donors like dimethyl sulphoxide (DMSO), trioctyl phosphine oxide (TOPO) and bis(2-ethylhexyl) phosphonate and the effect of various diluents on the extraction of Co(II) by the present method were studied in detail. The binary adduct formation constant (log kex) in the organic phase was found to be 3.182. The overall equilibrium constant (log K) for the ternary species [Co(A)(DMSO)(Cl)], [Co(A)(TOPO)(Cl)] and [Co(A)(phosphonate)(Cl)] were estimated to be 6.42, 6.22 and 6.25 respectively. The trend in equilibrium constants were in accordance with their basic character, i.e., (DMSO > or = TOPO approximately/= phosphonate). The results were extrapolated in the determination of Cobalt in pharmaceutical drugs and cobalt bearing ore samples.

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Solvent extraction separation of cobalt(II) with hexaacetatocalix(6)arene

Cited by 21 publications

References 5 publications

Solvent-Extraction Separation of Manganese(II) with Calixarene Substituted with an Acetyl Group at the Lower Rim

Solvent-Extraction Separation of Manganese(II) with Calixarene Substituted with an Acetyl Group at the Lower Rim

Recuperação de Eu(III) e U(VI) de efluentes aquosos utilizando a técnica de membranas líquidas suportadas (MLS) e macrocíclicos como agentes extratores

Synergistic Extraction of Cobalt (II) by β Hydroxy Naphthaldoxime and Neutral Donors

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