Solvent Extraction and Separation of Palladium(II) from Hydrochloric Acid Medium with N-Benzothiazolylazo Butyl Imide

2011 ◽  
Vol 287-290 ◽  
pp. 1626-1631
Author(s):  
Li Li Chen ◽  
Zu Min Qiu ◽  
Juan Huang
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Solvent Extraction ◽  
Magnetic Resonance ◽  
Hydrochloric Acid ◽  
Elemental Analysis ◽  
High Efficiency ◽  
Stoichiometric Ratio ◽  
Loading Capacity ◽  
Extraction And Separation ◽  
Hydrochloric Acid Medium

A new extractant,N-benzothiazolylazo Butyl Imide(BBI),was synthesized and identified by elemental analysis,infrared spectrum and nuclear magnetic resonance (NMR).The extraction of Pd(II) using BBI diluted with CHCl3 show high efficiency in 0-0.4M HCl medium.The dependence of the extraction percentages of Pd(II),Pt(IV)and base metal ions (Fe(III),Cu(II),and Zn(II)) on the HCl and BBI concentrations demonstrate that the idea condition for Pd(II) extraction is 0-0.4M HCl, 0.01-0.05M BBI.The stoichiometric ratio of Pd(II)-BBI complex is 1:2.The loading capacity of Pd(II) is about 0.5g/L using 0.1M BBI,which is comparable to that using DBSO.Complete stripping of Pd(II),Pt(IV) from loaded organic was proposed with 0.5M thiourea and 0.1M HCl.The Pd(II)-BBI-Cl complex has been characterized by elemental analysis,IR and 1HNMR spectra.

Enhanced extraction and separation of zirconium(IV) and hafnium(IV) with 3-phenyl-4-benzoyl-5-isoxazolone in presence of various neutral organophosphorus extractants

2007 ◽  
Vol 95 (5) ◽  
Author(s):  
K. Janardhan Reddy ◽  
A. Varada Reddy ◽  
B. S. Shaibu ◽  
M. L. P. Reddy
Keyword(s):  
Solvent Extraction ◽  
Hydrochloric Acid ◽  
Acid Solutions ◽  
Extraction And Separation ◽  
Extraction Behavior ◽  
Hydrochloric Acid Solutions ◽  
Organophosphorus Extractants

Various 3-phenyl-4-aroyl-5-isoxazolones, namely, 3-phenyl-4-benzoyl-5-isoxazolone (HPBI), 3-phenyl-4-(4-fluorobenzoyl)-5-isoxazolone (HFBPI) and 3-phenyl-4-(4-toluoyl)-5-isoxazolone (HTPI) were synthesized and examined with regard to the solvent extraction behavior of Zr(IV) and Hf(IV) from hydrochloric acid solutions. The results demonstrated that Zr(IV) and Hf(IV) extracted into chloroform with 3-phenyl-4-aroyl-5-isoxazolones (HA), as ZrOA

Regioselective synthesis of new 7,8-dichlorobenzofuro[3,2-c]quinoline-6,9,10(5H)-triones from reactions of 4-hydroxy-2-quinolones with 3,4,5,6-tetrachloro-1,2-benzoquinone

2020 ◽  
Vol 44 (7-8) ◽  
pp. 388-392
Author(s):  
Ashraf A Aly ◽  
Alaa A Hassan ◽  
Nasr K Mohamed ◽  
Lamiaa E Abd El-Haleem ◽  
Stefan Bräse
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Elemental Analysis ◽  
Mass Spectra ◽  
Regioselective Synthesis ◽  
Two Dimensional ◽  
New Compounds ◽  
Nuclear Magnetic

A novel series of 7,8-dichlorobenzofuro[3,2- c]quinoline-6,9,10(5 H)-triones was obtained regioselectively in good yields. The products were formed by the reactions of the 4-hydroxy-2(1 H)-quinolinones with 3,4,5,6-tetrachloro-1,2-benzoquinone in tetrahydrofuran as the solvent. Infrared, nuclear magnetic resonance (two-dimensional nuclear magnetic resonance), mass spectra and elemental analysis were used to elucidate the structures of new compounds.

The Liquefaction Mechanism Research of Straw Fiber in Polyhydric Alcohol

2012 ◽  
Vol 518-523 ◽  
pp. 3546-3551
Author(s):  
Qiu Ling Chen ◽  
Ke Wei Sun ◽  
Chun Hong Zhang
Keyword(s):  
Mass Spectrometry ◽  
Nuclear Magnetic Resonance ◽  
Solvent Extraction ◽  
Magnetic Resonance ◽  
Organic Solvent ◽  
Liquid Mixture ◽  
Mechanistic Studies ◽  
Plant Fibers ◽  
Organic Solvent Extraction ◽  
Mechanism Research

Two key products were isolated and purified from liquid mixture composition of wheat straw, by means of a combination of organic solvent extraction and column chromatography. Their structures were identified on basis of nuclear magnetic resonance (1H-NMR, 13C-NMR, DEPT), mass spectrometry (MS), and infrared (IR). The mechanism of liquefaction of straw was inferred from the structures of products and changes of hydroxyl value and liquefaction residue, which make up the lack of mechanistic studies of overall utilization of plant fibers.

scholarly journals Highly Efficient Micro-Scale Liquid-Liquid In-Flow Extraction of 99mTc from Molybdenum

Molecules ◽  
2021 ◽  
Vol 26 (18) ◽  
pp. 5699
Author(s):  
Petra Martini ◽  
Licia Uccelli ◽  
Adriano Duatti ◽  
Lorenza Marvelli ◽  
Juan Esposito ◽  
...  
Keyword(s):  
Solvent Extraction ◽  
High Efficiency ◽  
Specific Activity ◽  
Flow Chemistry ◽  
Extraction Process ◽  
Lab On Chip ◽  
Micro Scale ◽  
Extraction And Separation ◽  
On Chip ◽  
First Time

The trend to achieve even more compact-sized systems is leading to the development of micro-scale reactors (lab-on-chip) in the field of radiochemical separation and radiopharmaceutical production. Technetium-99m extraction from both high and low specific activity molybdenum could be simply performed by MEK-driven solvent extraction if it were not for unpractical automation. The aim of this work is to develop a solvent extraction and separation process of technetium from molybdenum in a micro-scale in-flow chemistry regime with the aid of a capillary loop and a membrane-based separator, respectively. The developed system is able to extract and separate quantitatively and selectively (91.0 ± 1.8% decay corrected) the [99mTc]TcO4Na in about 20 min, by using a ZAIPUT separator device. In conclusion, we demonstrated for the first time in our knowledge the high efficiency of a MEK-based solvent extraction process of 99mTc from a molybdenum-based liquid phased in an in-flow micro-scale regime.

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