الفهرس 
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Abstract
The thesis consists of Three Chapters are concerned with the synthesis of mesoporous silica (MCM-41), anchoring N-(3-(trimethoxysilyl)propyl) ethylenediamine on MCM-41 (MCM-41-N), its Schiff-base derivative with 4-dihydroxysalicylidene (MCM-41-N-Hdhba) and palladium(II) complex, [Pd(MCM-41-N-(Hdhba)2-(dhba)Cl(H2O)]. Chapter I: Introduction This chapter concerned with literature survey on the mesoporous silica (MCM-41) and its importance in catalytic reactions and adsorption process, functionalize MCM-41, especially, MCM-41 Schiff-base complex with palladium(II). Palladium Schiff-base complex as catalytic oxidants and the catalytic epoxidation of alkenes in presence of hydrogen peroxide as co-oxidant were also reported. Moreover, the removal of Cu(II) ions from aqueous media via adsorption onto modified silica have been recorded.Chapter II: Experimental
This chapter is concerned with synthetic procedures and experimental details of catalytic epoxidation of (cyclooctene, n-octene and styrene) and the batch adsorption studies of Cu(II) onto (MCM-41-N) and (MCM-41-N-Hdhba) in aqueous media. Also, this part includes the instrumentals and tools applied in this study.Chapter III: Results and Discussion It is concerned with the characterization of mesoporous silica (MCM-41), (MCM-41-N), (MCM-41-N-Hdhba) and [Pd(MCM-41-N-(Hdhba)2-(dhba)Cl(H2O)].Applications 1-The oxidation of olefins, (cyclooctene, n-octene and styrene), in presence of 50 mg of [Pd(MCM-41-N-(Hdhba)2-(dhba)Cl(H2O)], using 30% H2O2 – 0.2M NaHCO3 as co-oxidant at 353 K, yields the corresponding epoxyalkane as the main products.2- The effectiveness of functionalized mesoporous silica (MCM-41) with N-(3-(trimethoxysilyl)propyl)ethylenediamine (MCM-41-NH2), and its Schiff-base derivative (MCM-41-N-Hdhba) as adsorbent for the removal and recovery of copper(II) ions from aqueous media was studied.