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http://hdl.handle.net/20.500.12358/26356
TitleComplexation and thermodynamic studies of polysiloxane iminobis (N-diethylenediamineacetamide) ligand system with some transition metal ions
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Abstract

Many research concerning the synthesis of insoluble polysiloxane immobilized ligand systems, have been reported [1-21]. These functionalized polysiloxanes have been prepared by two methods. The first method; using the sol-gel process by hydrolytic polycondensation of tetraethylorthosilicate (TEOS) and the appropriate silane coupling agent (RO) 3 SiX, where X= ligand group)[1, 2]. The second method is by modification of a pre-prepared polysiloxane with a silane coupling agent containing the appropriate functional group [13-21]. These hybrid materials show high thermal, hydrolytic and mechanical stability over the organic polymers [5, 6]. These polysiloxane immobilized ligand systems have several applications such as extraction, recovery and separation of metal ions [13-21]. They also used as supports for heterogeneous catalysis and chromatography [2, 11, 22]. These materials have been characterized recently by many techniques including high-resolution solid state NMR [23-26], XPS analysis and thermal analysis [27-35]. In this work iminobis (N-diethylenediamineacetamide) polysiloxane-immobilized ligand system was prepared as previously reported [36] and complexed with Co2+, Ni2+ and Cu2+ metal ions from aqueous solutions. This study may be useful because the selection and separation of the chelating functionalized ligand system closely related to the stability of the complexes formed.

Authors
El-Ashgar, Nizam M.
Yasseen, Zeyad J.
TypeJournal Article
Date2009
Published inPCAIJ
SeriesVolume: 4, Number: 2
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The institutional repository of the Islamic University of Gaza was established as part of the ROMOR project that has been co-funded with support from the European Commission under the ERASMUS + European programme. This publication reflects the views only of the author, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

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The institutional repository of the Islamic University of Gaza was established as part of the ROMOR project that has been co-funded with support from the European Commission under the ERASMUS + European programme. This publication reflects the views only of the author, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

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