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Self-organization in chemistry 1. pH oscillations in a bromate-sulfite-perchloric acid system and 2. infiltration-acidization-deposition dynamics in a ferruginous limestone rock - by Farah Imadeddine El Zaknoun
No full textThesis (M.S.)--American University of Beirut, Dept. of Chemistry, 2009.;"Advisor : Dr. Rabih Sultan, Professor, Chemistry--Member of Committee : Dr. Mazen Al-Ghoul, Associate Professor, Chemistry--Member of Committee : Dr. Houssam El-Rassy, Assistant ProfBibliography : leaves 94-98.The thesis is divided into two parts, both related under the fascinating field o f self- organization in Chemistry. These are: 1) oscillatory chemical reactions, in particular pH oscillations and 2) simulation of geochemical patterns in nat ural rocks,
Effect of some physico-chemical parameters on the morphology and dynamics of Co(OH)2, Ni(OH)2, and Mg(OH)2 Liesegang patterns - by Layla George Badr
No full textThesis (M.S.)--American University of Beirut, Dept. of Chemistry, 2007.;"Advisor: Dr. Rabih Sultan, Professor, Chemistry--Member of Committee: Dr. Mazen Al-Ghoul, Associate Professor, Chemistry--Member of Committee: Dr. Houssam El-Rassy, Assistant ProfessBibliography : leaves 84-88.There is a tendency for systems far from equilibrium to spontaneously form self- organized dissipative structures. One example of chemical self-organization is Liesegang patterns, which consist of rhythmic precipitation zones that arise fro m the interpl
Revert spacing, electric effects and multi-component banding in periodic precipitation - by Tony Eugene Karam.
No full textThesis (M.S.)--American University of Beirut, Department of Chemistry, 2011.;"Advisor : Dr. Rabih Sultan, Professor, Department of Chemistry--Members of Committee: Dr. Houssam El-Rassy, Assistant Professor, Department of Chemistry Dr. Digambara Patra, AsIncludes bibliographical references (leaves 81-84)Periodic precipitation yields beautiful patterns that are similar to some natural self-organization structures, notably the process of rock formation in Geochemistry. In this so-called Liesegang phenomenon, an outer electrolyte diffuses through a gel med
Polyoxometalates immobilized onto mesoporous organically-modified silica aerogels for selective oxidation catalysis of anthracene - by Rami Ghassan Al-Oweini.
No full textThesis (M.S.)--American University of Beirut, Dept. of Chemistry, 2009.;"Advisor : Dr. Houssam El-Rassy, Assistant Professor, Chemistry--Member of Committee : Dr. Rabih Sultan, Professor , Chemistry--Member of Committee : Dr. Faraj Hasanayn, Associate ProBibliography : leaves 170-188.Novel surface organically-modified silica aerogels were synthesized and characte rized by FTIR spectroscopy and nitrogen adsorption-desorption experiments. The s urface modification of the silica aerogels was conducted with the help of a two- step sol-ge
Photoelectrochemical studies of CdSe quantum dots and dye sensitized inverse TiO2 opals for enhancing energy conversion - by Serene Said Bayram.
No full textThesis (M.S.)--American University of Beirut, Department of Chemistry, 2011.;"Advisor : Dr. Lara Halaoui, Professor, Department of Chemistry--Members of Committee: Dr. Tarek Ghaddar, Associate Professor, Department of Chemistry Dr. Houssam El-Rassy, AssiIncludes bibliographical references (leaves 115-122)In one project of this thesis, we studied photonic effects on the harvesting efficiency of Q-CdSe when adsorbed at TiO2 inverse opal photonic crystals. Photonic effects at the blue-edge and the red-edge of the stop band are investigated. Inverse TiO2 o
Preparation of activated carbon from pine cones and needles by chemical activation - by Oussama Abdallah Kobeissi
No full textThesis (M.E.)--American University of Beirut, Dept. of Civil and Environmental Engineering, 2008.;"Advisor : Dr. George Ayoub, Professor , Civil and Environmental Engineering--Member of Committee : Dr. Houssam El-Rassy, Assistant Professor , Chemistry--MeBibliography : leaves 140-144.Several activated carbons were generated by potassium hydroxide, sodium carbonat e, and sodium hydroxide activation (1:1 impregnation ratio) at 800 degrees centi grade from pine cones and needles using different production procedures. The pro ducts were
Photoelectrochemical studies of cadmium sulfide quantum dot assemblies for energy conversion - by Maysaa Adnan El-Harakeh.
No full textThesis (M.A.)--American University of Beirut, Dept. of of Chemistry, 2009.;"Advisor: Dr. Lara Halaoui, Associate Professor, Chemistry Dept.--Member of Committee: Dr. Malek Tabbal, Professor , Physics Dept.--Member of Committee :Dr. Houssam El-Rassy, AssisBibliography : leaves 131-141.In one project of this thesis, we present the photoelectrochemical behavior of C dS quantum dots (Q-CdS) assemblies in the presence of sulfide (S2--OH-) and asco rbic acid as hole scavengers. The quantum dots (Q-dot) have an average diameter of 3.6 nm, a
Surface characterization by nitrogen adsorption of silica aerogels synthesized from various Si(OR)4 and R″Si(OR′)3 precursors
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