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Using synthetic glasses in water treatment / Esmat Mansour Saleh Elfeky ; Supervised Mohamed R. Shehata , Marcus Jopony , Yahia H. Elbashar

By: Contributor(s): Material type: TextTextLanguage: English Publication details: Cairo : Esmat Mansour Saleh Elfeky , 2020Description: 125 P. : charts ; 25cmOther title:
  • أستخدام الزجاج المصنع فى معالجة المياه [Added title page title]
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  • Issued also as CD
Dissertation note: Thesis (Ph.D.) - Cairo University - Faculty of Science - Department of Inorganic Chemistry Summary: The thesis involves the preparation of the binary system of Phosphate Based Glass (PBG) x P₂O₅ - (100 - x) Na₂O mol % and investigates the compositions that form glassy matrix. It is found that x in the range between x = 40 to 60 mole % and divided in to 5 glass samples (x = 40, 45, 50, 55, 60) and for compositions of 40 > x > 60 no glassy matrix is formed. The tabulated data of peak center intensities of IR spectra of sodium phosphate glasses, it is found that the suggested vibrational modes of structural phosphate chains and terminal groups of the absorption bands shifts with increasing the Na₂O mole % content. The amount of bridging phosphorous, shows a maximum value for the glass containing 60 mol % Na₂O due to the depolymerization of the phosphate matrix with increasing Na2O content from 40 to 60 mol % via a breakdown of some terminal bonds (P=O) in the glass network which decreases the bond strength, consequently the peak center is shifted towards lower wave number
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Thesis Thesis قاعة الرسائل الجامعية - الدور الاول المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.12.09.Ph.D.2020.Es.U (Browse shelf(Opens below)) Not for loan 01010110081256000
CD - Rom CD - Rom مخـــزن الرســائل الجـــامعية - البدروم المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.12.09.Ph.D.2020.Es.U (Browse shelf(Opens below)) 81256.CD Not for loan 01020110081256000

Thesis (Ph.D.) - Cairo University - Faculty of Science - Department of Inorganic Chemistry

The thesis involves the preparation of the binary system of Phosphate Based Glass (PBG) x P₂O₅ - (100 - x) Na₂O mol % and investigates the compositions that form glassy matrix. It is found that x in the range between x = 40 to 60 mole % and divided in to 5 glass samples (x = 40, 45, 50, 55, 60) and for compositions of 40 > x > 60 no glassy matrix is formed. The tabulated data of peak center intensities of IR spectra of sodium phosphate glasses, it is found that the suggested vibrational modes of structural phosphate chains and terminal groups of the absorption bands shifts with increasing the Na₂O mole % content. The amount of bridging phosphorous, shows a maximum value for the glass containing 60 mol % Na₂O due to the depolymerization of the phosphate matrix with increasing Na2O content from 40 to 60 mol % via a breakdown of some terminal bonds (P=O) in the glass network which decreases the bond strength, consequently the peak center is shifted towards lower wave number

Issued also as CD

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