Document Details

Document Type : Thesis 
Document Title :
A Study of Nanosized Layered Hydrotalcites for Fine Chemical Applications
دراسة الهيدروتالسيتات الطبقية النانونية في تطبيقات الكيماويات الدقيقة
 
Subject : Faculty of Sciences 
Document Language : Arabic 
Abstract : Nickel and copper hydrotalcitecatalysts were synthesized by a coprecipitation method. The author studied the effect of cation substitution in the cationic sheets on their catalytic activity for the Hantzsch and Ullmann reactions, respectively.The chemical formulas of the prepared catalysts were determined using ICP-AES, TG and EDX techniques. The structure of the as-synthesized sample, and the presence of the anions in the interlayer galleries of hydrotalcites, has been determined by X-ray diffraction and FTIR spectroscopy. The pore structure and the BET-surface area were determined from N2 physisorption at 77 K. The as-synthesized Mg-Al-hydrotalcite catalyst was found to be the most efficient for the Hantzsch reaction relative to the Ni-hdrotalcite solid catalysts tested. The high performance of this catalyst was attributed to its cooperative contribution of acidic and basic sites. On the other side, copper containing hydrotalcite catalysts have higher catalytic efficiency than MgAl-hydrotalcite ones. The present work shown that this microwave assisted reaction provides an eco-friendly alternative to the conventional syntheses where soluble bases are used. Furthermore, the reaction was performed over a considerably shorter time scale and generated significantly higher yields than traditional methods. 
Supervisor : prof.Sulaiman Nasir Basahel 
Thesis Type : Doctorate Thesis 
Publishing Year : 1432 AH
2011 AD 
Co-Supervisor : Dr.Mohamed Mokhtar Mohamed Mostafa 
Added Date : Saturday, July 2, 2011 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
ابتسام عبد الله الصبانAl-Sabban, Ebtisam AbdullahResearcherDoctorate 

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