عنوان المقالة:A new route synthesis of immobilized-polysiloxane iminodiacetic acid ligand system, its characterization and applications
أ.د نظام محمود الأشقر | Prof. Nizam M. El-Ashgar | 13399
- نوع النشر
- مجلة علمية
- المؤلفون بالعربي
- Nizam M El-Ashgar, Issa M El-Nahhal, Mohamed M Chehimi, Florence Babonneau, Jacques Livage
- الملخص العربي
- A new route for the synthesis of immobilized-polysiloxane ligand system bearing iminodiacetic acid chelating ligand of the general formula P-(CH2)3N-(CH2COOEt)2, (where P represents [Si–O]n polysiloxane network) was accomplished. The preparation of the immobilized iminodiethylacetate was achieved by the reaction of 3-aminopropyltrimethoxysilane with ethyl chloroacetate followed by hydrolytic polycondensation of the diethyliminodiacetate silane agent and tetraethylorthosilicate via the sol–gel process. The immobilized iminodiacetic acid P-(CH2)3N-(CH2COOH)2 was obtained by hydrolysis of the ethyl acetate groups using diluted hydrochloric acid. The new functionalized ligand system exhibits high capacities for uptake of the metal ions (Co2+, Ni2+, Cu2+ and Zn2+), and forms 1:1 metal to ligand ratio complexes in the case of Ni2+ and Cu2+.
- تاريخ النشر
- 30/09/2007
- الناشر
- Materials Letters
- رابط DOI
- https://do
- رابط خارجي
- http://www.sciencedirect.com/science/article/pii/S0167577X07002054
- الكلمات المفتاحية
- Metal uptakeIminodiacetic acidEthyl chloroacetateSol–gel process polysiloxanesPolysiloxane-immobiliz