naglaa_abdallah

Naglaa Youssef Abdallah

مدرس - Lecturer

كلية العلوم

العنوان: جامعه سوهاج - كليه العلوم- قسم النبات والميكروبيولوجى

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إعجاب

المنشورات و المؤلفات التي تحتوي علي الكلمة المفتاحية: Oxidation


2019-06-12 13:46:42 الكلمات المفتاحية Catalyst, Oxidation, azomethine ligands, metal chelates, H2O2,
Azomethine metal chelates as an efficient catalyst for oxidation of organic compounds
Azomethine ligands and their metal chelates are flexible compounds synthesized from the condensation of an amino compound with carbonyl compounds and extensively used for industrial purposes and also show a broad range of biological efficiencies including antibacterial, antifungal, antiviral, antimalarial, antiproliferative, anti-inflammatory, anticancer, anti-HIV, anthelminthic and antipyretic properties. Azomethine metal chelates show excellent catalytic activity in diversity reactions. Over the ... إقراء المزيد

2018-11-18 11:43:13 الكلمات المفتاحية Temperature, solvent effect, tetra-dentate, Cr (III) complexes, catalytic oxidation, IR, NMR, TGA, aqueous-methanol, Oxidation,
Some New Cr (III)  Mononuclear Complexes encompassing Tri- and Tetra-dentate Imine Ligands: Synthesis, Spectral Characterization and High Selectivity in Catalytic Oxidation of Benzyl alcohol
IN THE PRESENT CONTRIBUTION, SOME NOVEL CR (III) COMPLEXES WERE SYNTHESIZED FROM TRI- AND TETRA-DENTATE IMINE LIGANDS DERIVED FROM 3-ETHOXYSALICYLALDEHYDE OR 2-HYDROXYNAPHTHALDEHYDE WITH 2-AMINOPHENOL OR O-PHENYLENEDIAMINE. ALL THE PREPARED LIGANDS WERE AUTHENTICATED BY 1H, 13C NMR AND IR SPECTRA. INTERACTION OF THE SYNTHESIZED LIGANDS WITH CHROMIUM NITRATE PRODUCED THREE NOVEL CR(III) COMPLEXES. THE STRUCTURE OF THE PREPARED CR (III) COMPLEXES ... إقراء المزيد

2018-11-28 23:06:22 الكلمات المفتاحية Oxidation, kinetic,
Oxidation of Schiff Base Complexes - Kinetic Aspects
Oxidation of Schiff Base Complexes - Kinetic Aspects oxidation of Schiff Base amino acid complexes In this work, the reaction between Fe(II) Schiff base complexes and H2O2 was carried out in aqueous, co-organic media and in the presence of added salts. Moreover the activation parameters were calculated and discussed. The Kinetic measurements confirmed the pseudo 1st – order rate dependence ... إقراء المزيد

2018-11-01 03:07:18 الكلمات المفتاحية Au catalysts, MCM-41, Sulfated zirconia, XPS, Glycerol, Oxidation, Acid-base properties,
Tailoring the selectivity of glycerol oxidation by tuning the acid–base properties of Au catalysts
Supported gold nanoparticles are very effective catalysts for the selective oxidation of glycerol which represents an important bio-derived feedstock. In this paper we report that the acid/base properties, especially the acid site density, of these catalysts are the key factor in tuning the selectivity. A range of supported AuPt catalysts have been prepared by sol immobilization using acidic (H-mordenite, SiO2, ... إقراء المزيد

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