scholarly journals SYNERGISTIC EXTRACTION OF COBALT(II) WITH MIXTURE OF ACYL-PYRAZOLON AND CROWN-ETHER IN STRONSIUM(II) ENVIRONMENT

2010 ◽  
Vol 7 (1) ◽  
pp. 43-48
Author(s):  
Bambang Rusdiarso
Keyword(s):  
Crown Ether ◽  
Extraction Constant ◽  
Synergistic Extraction

Synergistic extraction of cobalt(II) with mixture of acyl-pyrazolon (HL) and crown-ether (E) in the Sr(NO3)2 environment has been studied. In this research, HPMBP (phenyl-1-methyl-3-benzoil-4-pyrazolon-5) was used, with three different kinds of  crown-ether, i.e. (benzo-15-crown-5), DB18C6 (dibenzo-18-crown-6) and DB24C8 (dibenzo-24-crown-8), in chloroform. In the bulk environment  of stronsium,  a cobalt coextraction and stronsium occured with species ESrNO3+,Co(PMBP)3-, and E = B15C5,    while Co(PMBP)2E and ESr,Co(PMBP3)2, with E = DB18C6. There was no  coextraction when using crown-ether DB24C8, with the extracted species Co(PMBP)2E. Values of extraction constant presented in log Kex were -6.08 (B15C5), - 4.51,  -12.55 (DB18C6), and - 4.57 (DB24C8), respectively.   Keywords: synergistic, cobalt (II), strontium (II), coextraction.

The extraction of alkali metal picrates by polyurethane foam using crown ether

1981 ◽  
Vol 59 (10) ◽  
pp. 1490-1496 ◽  
Author(s):  
Anjum S. Khan ◽  
W. G. Baldwin ◽  
A. Chow
Keyword(s):  
Crown Ether ◽  
Alkali Metal ◽  
Polyurethane Foam ◽  
Dissociation Constants ◽  
Extraction Constant ◽  
Ion Pair ◽  
Constant Sequence ◽  
Extraction Constants ◽  
The Stability ◽  
Ether Complex

The distribution of alkali metal picrates between water and polyurethane foam was studied in the presence of dicyclohexyl 18-crown-6 (DCHC-6). The extraction constants and dissociation constants for the ion pair (MCrA) in polyurethane foam were determined. The extraction constant sequence of the alkali metal ions with DCHC-6 is K+ > Rb+ > Cs+ > Na+ and mainly depends on the stability of the alkali metal – crown ether complex.

scholarly journals SOLVENT EFFECT ON SYNERGISTIC EXTRACTION OF AMERICIUM (III)/2-TIIENOYLTRIFLUORCACETONE/CROWN ETHER

1991 ◽  
Vol 7 (Supple) ◽  
pp. 51-54 ◽  
Author(s):  
YOSHIHIRO MEGURO ◽  
HIROSHI MUTO ◽  
ZENKO YOSHIDA
Keyword(s):  
Crown Ether ◽  
Solvent Effect ◽  
Synergistic Extraction

Crown ether as size selective synergist in the solvent extraction of thorium(IV) and uranium(VI) with 3-phenyl-4-(4-fluorobenzoyl)-5-isoxazolone

2001 ◽  
Vol 89 (7) ◽  
Author(s):  
M.L.P. Reddy ◽  
R. Meera
Keyword(s):  
Nitric Acid ◽  
Solvent Extraction ◽  
Crown Ether ◽  
Metal Ions ◽  
Synergistic Extraction ◽  
Acid Solutions ◽  
Nitric Acid Solutions

The synergistic extraction of thorium(IV) and uranium(VI) from nitric acid solutions has been investigated using mixtures of 3-phenyl-4-(4-fluorobenzoyl)-5-isoxazolone (HFBPI) and dicyclohexano-18-crown-6 (DC18C6), dibenzo-18-crown-6 (DB18C6) or benzo-15-crown-5 (B15C5). The results demonstrate that these metal ions are extracted into chloroform as Th(FBPI)

scholarly journals Synergistic Extraction of Copper(II) and Zinc(II) with Tributyl Phosphate and Crown Ether

1986 ◽  
Vol 59 (10) ◽  
pp. 3003-3006 ◽  
Author(s):  
Yuko Hasegawa ◽  
Hirofumi Miyata ◽  
Satoshi Yoshida
Keyword(s):  
Crown Ether ◽  
Tributyl Phosphate ◽  
Synergistic Extraction

Preparation and Gas Sensitivity of Crown Ether Metal Complex Film Gas Sensor

2020 ◽  
Vol 2 (1) ◽  
pp. 1-12
Author(s):  
Gulgina Mamtimin ◽  
Halisa Arkin ◽  
Patima Nizamidin ◽  
Erkin Tursun ◽  
Abliz Yimit
Keyword(s):  
Crown Ether ◽  
Metal Complex ◽  
Gas Sensor ◽  
Gas Sensitivity ◽  
Complex Film
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