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Articles 1 - 10 of 10
Full-Text Articles in Engineering
Green Synthesis Of Copper Oxide Nanoparticles In Aqueous Medium As A Potential Efficient Catalyst For Catalysis Applications, Hany A. Elazab Dr
Green Synthesis Of Copper Oxide Nanoparticles In Aqueous Medium As A Potential Efficient Catalyst For Catalysis Applications, Hany A. Elazab Dr
Chemical Engineering
In this research, we have developed a reliable green method for the synthesis of copper oxide nanoparticles as a potential efficient catalyst for several catalysis applications. In our experimental approach, microwave-assisted synthesis technique was used in order to perform chemical reduction of copper salt using hydrazine hydrate as a strong reducing agent. The prepared catalyst was characterized using various techniques showing the formation of well dispersed copper oxide nanoparticles. The synthesized Copper oxide catalyst shows many advantages including the use of environmentally benign solvent systems,
Copper Oxide Nanoparticles As A Highly Efficient Catalyst For Catalysis Applications, Hany A. Elazab Dr
Copper Oxide Nanoparticles As A Highly Efficient Catalyst For Catalysis Applications, Hany A. Elazab Dr
Chemical Engineering
In this research, we have developed a reliable green method for the synthesis of copper oxide nanoparticles as a potential efficient catalyst for several catalysis applications. In our experimental approach, microwave-assisted synthesis technique was used in order to perform chemical reduction of copper salt using hydrazine hydrate as a strong reducing agent. The prepared catalyst was characterized using various techniques showing the formation of well dispersed copper oxide nanoparticles. The synthesized Copper oxide catalyst shows many advantages including the use of environmentally benign solvent systems, green synthetic approach, and mild reaction conditions.
Mechanical Characteristics For Different Composite Materials Based On Commercial Epoxy Resins And Different Fillers, Marwa Mohamed, M. A. Radwan, M. A. Sadek, Hany A. Elazab
Mechanical Characteristics For Different Composite Materials Based On Commercial Epoxy Resins And Different Fillers, Marwa Mohamed, M. A. Radwan, M. A. Sadek, Hany A. Elazab
Chemical Engineering
The bulletproof jacket and the cassette shields of reactive armors are formed from different layers containing polymeric composite material of low density but with high resistance to penetration of high kinetic energy projectiles. Composites based on epoxies are very rigid and can resist bullet penetration specially when made with other layers of carbon fibers or Kevlar. In this work different composites based on epoxy resins were prepared and all mechanical properties were determined including resistance to high kinetic energy by falling steel ball to reach the optimum composition, which may be used in the production of the bulletproof jackets and …
Bulletproof Vests/Shields Prepared From Composite Material Based On Strong Polyamide Fibers And Epoxy Resin, Hany A. Elazab Dr
Bulletproof Vests/Shields Prepared From Composite Material Based On Strong Polyamide Fibers And Epoxy Resin, Hany A. Elazab Dr
Chemical Engineering
Fiber reinforced plastics (FRP) have arisen as a main class of structural materials having high strength and light weight implemented in a large scale of different applications. This paper performs a comparison between the enhanced properties of Kevlar 49 fiber and Twaron CT 704 reinforced with epoxy resin to obtain an efficient, light weight and slim body armor capable of resisting high speed projectiles (9mm bullets). Reinforcing the fabrics adds extra strength to the fabrics instead of using several unreinforced fabrics which increases the weight, thickness and the cost of the final product. The response of the prepared composite material …
The Continuous Synthesis Of Pd Supported On Fe3o4 Nanoparticles: A Highly Effective And Magnetic Catalyst For Co Oxidation, Hany A. Elazab
The Continuous Synthesis Of Pd Supported On Fe3o4 Nanoparticles: A Highly Effective And Magnetic Catalyst For Co Oxidation, Hany A. Elazab
Chemical Engineering
We report a facile approach used for the simultaneous reduction and synthesis of a well dispersed magnetically separable palladium nanoparticle supported on magnetite (Pd/Fe3O4 nanoparticles) via continuous flow synthesis under microwave irradiation conditions, using a Wave Craft’s microwave flow reactor commercially known as ArrheniusOne, which can act as a unique process for the synthesis of highly active catalysts for carbon monoxide (CO) oxidation catalysis. The prepared catalysts are magnetic, which is an advantage in the separation process of the catalyst from the reaction medium. The separation process is achieved by applying a strong external magnetic field which makes the separation …
Preparation Of Hydrogel Based On Acryl Amide And Investigation Of Different Factors Affecting Rate And Amount Of Absorbed Water, Hany A. Elazab Dr
Preparation Of Hydrogel Based On Acryl Amide And Investigation Of Different Factors Affecting Rate And Amount Of Absorbed Water, Hany A. Elazab Dr
Chemical Engineering
Hydrogel is considered as an important material in our world nowadays as it is used in many important and significant applications such as in tissue engineering and agriculture. There are hundreds of types of such materials, where most of them can be easily prepared. The main objective of this work is to prepare one of the hydrogel types which could be very useful in the agriculture of deserts where plants in dry places require water in order to grow up. There are many places around the world where raining occurs only once or twice a year. There are also places …
The Effect Of Graphene On Catalytic Performance Of Palladium Nanoparticles Decorated With Fe3o4, Co3o4, And Ni (Oh)2: Potential Efficient Catalysts Used For Suzuki Cross—Coupling, Hany A. Elazab Dr
Chemical Engineering
In this research, we report a scientific investigation of an efficient method used for the synthesis of highly active Palladium Nanoparticles decorated with Fe3O4, Co3O4, and Ni (OH)2 Supported on Graphene as Potential Efficient Catalysts for Suzuki Cross—Coupling. Pd/Fe3O4 nanoparticles supported on graphene nanosheets (Pd/ Fe3O4/G) showed an excellent catalytic activity for Suzuki coupling reactions and recycled for up to four times without loss of catalytic activity. An efficient magnetic catalyst has been successfully synthesized using a simple, reproducible fast and reliable method using microwave irradiation conditions. The prepared catalysts are magnetic as in case of iron and cobalt oxides …
Platinum Nanoparticles-Cobalt Oxide Nanostructures As Efficient Binary Catalyst For Ethylene Glycol Electro-Oxidation, Ghada El-Nowihy
Platinum Nanoparticles-Cobalt Oxide Nanostructures As Efficient Binary Catalyst For Ethylene Glycol Electro-Oxidation, Ghada El-Nowihy
Chemical Engineering
An enhanced electrocatalytic activity towards ethylene glycol oxidation reaction (EGO) in alkaline medium is observed at a glassy carbon (GC) electrode modified with a nanoparticle-based binary catalyst composed of Pt (nano-Pt) and cobalt oxide (nano-CoOx). The electrocatalytic activity of the modified electrodes towards EGO depends on the loading level as well as the composition of the catalyst layer atop the GC electrode surface. Several techniques including cyclic voltammetry (CV), field-emission scanning electron microscopy (FE-SEM) and energy dispersive X-ray spectroscopy (EDS) are used to address the catalytic activity of the proposed catalyst and to reveal their surface morphology and composition, respectively. …
Investigating A Sequentially Assembled Mnox/Pt Nanocatalyst As A Potential Anode For Ethylene Glycol Fuel Cells, Ghada El-Nowihy
Investigating A Sequentially Assembled Mnox/Pt Nanocatalyst As A Potential Anode For Ethylene Glycol Fuel Cells, Ghada El-Nowihy
Chemical Engineering
Aiming at a better electrocatalytic enhancement of ethylene glycol (EG) electrooxidation (EGO) in an alkaline medium for EG fuel cells (EGFCs), a MnOx/Pt anode was developed. A sequential layer-by-layer electrodeposition technique was employed to assemble first platinum nanoparticles (nano-Pt) directly onto the surface of a glassy carbon (GC) electrode then manganese oxide nanoparticles (nano-MnOx) were next immobilized. Field emission scanning electron microscopy (FE-SEM) and energy dispersive X-ray spectroscopy (EDS) were employed to evaluate the surface morphology and the bulk composition of the proposed catalyst in addition to the relative ratio of the catalyst’s ingredients. On the other hand, the catalyst …
Co-Gasification Of Coal And Biomass Wastes In An Entrained Flow Gasifier: Modelling, Simulation And Integration Opportunities, Dalia A. Ali Eng, Mamdouh A. Gadalla Prof., Omar Y. Abdelaziz, Christian P. Hulteberg, Fatma H. Ashour Prof.
Co-Gasification Of Coal And Biomass Wastes In An Entrained Flow Gasifier: Modelling, Simulation And Integration Opportunities, Dalia A. Ali Eng, Mamdouh A. Gadalla Prof., Omar Y. Abdelaziz, Christian P. Hulteberg, Fatma H. Ashour Prof.
Chemical Engineering
Gasification processes convert carbon-containing material into syngas through chemical reactions in the presence of gasifying agents such as air, oxygen, and steam. Syngas mixtures produced from such processes consist mainly of carbon monoxide (CO), hydrogen (H2), carbon dioxide (CO2), and methane (CH4); this gas can be directly utilised as a fuel to produce electricity or steam. Besides, it is regarded as a basic feedstock within the petrochemical and conventional refining industries, producing various useful products like methanol, hydrogen, ammonia, and acetic acid. In this work, a rigorous process model is developed to simulate the co-gasification of coal-biomass blends through an …