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Register a new userPreparation of Macrocyclic Schiff Base and using it in Extraction of some Transition Metals
تحضير أساس شيف حلقي أساسه اتيلين ثنائي أوكسي بيس اتيل أمين و استخدامه في استخلاص بعض كاتيونات المعادن الانتقالية
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Damascus University ورقة بحثية
Publication date
2011
fields
Chemistry
and research's language is
العربية
Authors
نديم المهنا( باحث )
Created by
Shamra Editor
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اصطنع في هذا البحث أساس شيف حلقي يحتوي على ذرات مانحة من تفاعل تكاثف ثنائي الالدهيد: (I (1,4 بيس (6 -ميتوكسي-3 -فورميل فينيل) -1,4 -ثنائي أوكسا بوتان مع ثنائي الأمين 2,2 -اتيلين ثنائي اوكسي بيس اتيل أمين. و عينت هوية أساس شيف الحلقي (II (1,16 -ثنائي آزا-[3,6 ;11,14- 6,6 ميتوكسي فنيل)] 7,10,19,22 -رباعي أوكسا حلقي رباعي ايكوزان1,15 -ديئن بمطيـافيتي ' ثنائي ( ,++Ni) ++, MS-LC (و(IR .(استخدم أساس شيف المحضر في استخلاص بعض العناصر الانتقالية Zn من طور مائي إلى طور عضوي لايمتزج مع الماء. درس تأثير المحلات المستخدمة (كلوروفورم، ++Pb C و حسبت تراكيز الكاتيونات 0 ثنائي كلور الميتان) في النسبة المئوية للاستخلاص. عند الدرجة 1.0±25 في الطور المائي باستخدام جهاز الامتصاص الذري.
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.
References used
Chaudhary A., Bansal N., Ga Jraj A., Singh R. V. (2003). J. Inorg. Biochem. 93, 393
Baars M., Meijer E. (1997). Hydroxyoximes and copper hydrometaurgy, Polym. Mater. Sci. Eng,2 (183), 120-132
Habibi D., Izadkhan V. (2004). Phosphorus, Sulfur and silicon, 179,1197
rate research
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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.
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.
macrocyclic hydrazone Schiff base was synthesized by reaction of
succinicdihydrazide, Adipicdihydrazide with acetylacetone, adipicdihydrazide
with terephtaldialdehide and sebacicdihydrazide with terephtaldialdehide.
In this research project, the EPON 828 /Hardener 2512 epoxy resin coating
has been prepared at the ambient laboratory temperature with different epoxy/
hardener ratio.
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.
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