Do you want to publish a course? Click here

Synthesis of N2O2S2-Schiff base Ligand and Using it to Transport Cu2+ Through Bulk Liquid Membrane

اصطناع مرتبطة أساس شيف- N2O2S2 و استخدامه لنقل أيونات النحاس عبر الأغشية السائلة

1194   0   13   0 ( 0 )
 Publication date 2011
  fields Chemistry
and research's language is العربية
 Created by Shamra Editor




Ask ChatGPT about the research

New Schiff base (H2L) containing nitrogen-sulfur-oxygen atoms was synthesized by reaction of α,α'-bis(5- Bromo-2-carboxyaldehyde phenoxy)-1.4- xylene with aminothiophenol. Transport of copper ion across a bulk chloroform membrane containing Schiff base ligand (H2L) as carrier has been studied. The parameters influencing the transport efficiency such as composition of receiving phase, pH of the feed phase, carrier concentration in the membrane, EDTA concentration in the receiving phase, effect of temperature and time dependency of the process were studied and discussed. The amount of copper transport through the liquid membrane after 48 min., arrived to 100% at temperature 58°C.



References used
Jonsson, J. A and Matiasson, L. (1992). Supported liquid membrane techniques for sample preparation and enrichment in environmental and biological analysis. TrAC, 11, 106
Safavi, A and shams, E. (1999). Selective transport of silver ions through bulk liquid membrane using Victoria blue as carrier . Talanta, 48, 1167
Chaudry, M. A. Amin, S. and Malik, M. T. (1996). Tri-n-octylamine- Xylene-Based Supported Liquid Membranes and Transport of Ce (IV) Ions Sep. Sci. Technol, 31, 1309
rate research

Read More

In this research we have synthesized a new macrocyclic Schiff base containing N2O5 donor atomes which was prepared by reaction of 1,7- bis (6- methoxy - 2 - formyl phenyl)-1,4,7,10,13-penta oxa tridecane with 4',4- oxy dianiline.
Separation with solvent extraction of Cu(II), Hg(II), and Cr(III) from aqueous solution using the ligend (HL) as a new extractant has been studied. The new acyclic Schiff Base (HL) was synthesized by reaction of 5-bromosalicylaldehyde with 2-(2-Am inoethyl)pyridine. The structure of the new compound (HL) was confirmed by using FT-IR spectra, 1H-NMR and 13CNMR spectra and mass spectra (MS). The effect of chloroform and dichloromethan as organic solvents in the metal extractions was investigated at 20oC by using UV-visible Spectrometry. The influence of pH, ligand concentration, shaking time and ratio of aqueous-to-organic phases on extraction yield was tested at 20oC. The extractability of the tested metal ions were evaluated.
A new acyclic Schiff Base(II), containing nitrogen-oxygen donor atoms was synthesized by reaction of 1,2-Bis (5-bromo-2-formyl-phenoxy) ethane with 2- (2-Aminoethyl)pyridine and characterized. The liquid-liquid extraction of transition metals such as Cu+2, Cr+3 and Uranyl-picrate (UO2)+2 from aqueous phase to the organic phase was carried out using the novel ligand. The effect of chloroform and nitrobenzene as organic solvents on the metal extractions was investigated at 20oC by using Atomic Absorption and UV-visible Spectrophotometry. The influence of pH, ligand concentration, ionic strength, shaking time and ratio of aqueous-to-organic phases on extraction yield was tested at 20oC. The extractability of the tested metal ions were valuated.
In this research we have synthesized a new macrocyclic Schiff base (II) containing nitrogen- oxygen donor atoms which was designed and synthesized by reaction of: 1,4– bis (6',6'- methoxy -3- formyl phenyl)-1,4- dioxa butane (I). Identification of this macrocyclic schiff base: (II) 1,16- Diaza–[3,6;11,14-di (6',6'- methoxy phenyl)]-7,10,19,22 - tetraoxa cyclo tetra icozane-15,1dien was determined by (LC-MS) and spectroscopy (IR). The liquid- liquid extraction of metal such as Zn2+, Pb2+ and Ni2+ from aqueous phase to organic phase which doesn't in water. The effect of chloroform and dichloromethane as organic solvents over the metal extractions was investigated at 25± 0.10C by using atomic absorption Spectrometer and extraction percentage was calculated.
This work was focused on the synthesis of tetradentate Schiff bases which were prepared by condensation of salicylaldehyde with 1,4-diaminobenzene and 1,3-diaminobenzene. The Schiff base ligands were checked by different spectral technique (GC-MS, 1H-NMR, IR). The influences of shaking time on the extraction of Cu (II) using solvent extraction technique was studied. Then the Kinitic parameters were calculated from schemes which give best line through drawing log (a-x) vs time or 1/(a-x) vs time or [Cu2+] vs time, whereas (a-x) represents Cu(II) concentration in water phase and from it (n) reaction order, (K) reaction rate constant (t1/2) reaction half between prepared ligand and Cu (II) were calculated.
comments
Fetching comments Fetching comments
Sign in to be able to follow your search criteria
mircosoft-partner

هل ترغب بارسال اشعارات عن اخر التحديثات في شمرا-اكاديميا