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- Pd nanoparticles (4)
- Hexagonal Co3O4 nanoplates (3)
- Hexagonal Ni(OH)2 nanoplates (3)
- Magnetite Fe3O4 nanoparticles (3)
- Microwave synthesis (3)
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- Catalysis (2)
- Dusty gas model (2)
- Hydrogen gas transport (2)
- Hydrogen production (2)
- Hydrogen-hydrocarbon separation (2)
- Membranes (2)
- Selective surface flow (2)
- Acetic acid (1)
- Agricultural applications (1)
- Buildings roofs (1)
- Bulletproof vests/shields. (1)
- CO oxidation (1)
- Carbon monoxide oxidation; copper oxide; nanoparticles; microwave synthesis; catalysis. (1)
- Carbon nanotubes (1)
- Catalysis; Water splitting; Nickel; MWCNTs. (1)
- Characterization (1)
- Copper oxide (1)
- Corrosion (1)
- Cross-coupling (1)
- Cross-linking agent (1)
- Cysteine (1)
- Electrocatalysis (1)
- Electrodeposition (1)
- Ethane (1)
- Ethylene (1)
Articles 1 - 22 of 22
Full-Text Articles in Engineering
Laser Vaporization And Controlled Condensation (Lvcc): Graphene Supported Pd/Fe3o4 Nanoparticles As An Efficient Magnetic Catalyst For Suzuki Cross – Coupling., Hany A. Elazab Dr
Laser Vaporization And Controlled Condensation (Lvcc): Graphene Supported Pd/Fe3o4 Nanoparticles As An Efficient Magnetic Catalyst For Suzuki Cross – Coupling., Hany A. Elazab Dr
Chemical Engineering
A reproducible, reliable, and highly efficient synthetic approach was implemented for synthesis of palladium nanoparticles supported on a binary composite of Fe3O4 and graphene (Pd-Fe3O4/G). This unique catalyst was tested for being used as a highly efficient active catalyst for being used in Suzuki cross – coupling reactions. It was found that this graphene supported Pd/Fe3O4 nanoparticles (Pd-Fe3O4/G) has a remarkable catalytic activity towards Suzuki coupling reactions. This catalyst could be recycled for up to three times with high catalytic activity. The catalyst was prepared using LVCC synthetic approach; the prepared catalyst was found to be highly magnetic which enabled …
Micro Reactor Technology: Flow Chemistry Impact On Applied Catalysis, Hany A. Elazab Dr
Micro Reactor Technology: Flow Chemistry Impact On Applied Catalysis, Hany A. Elazab Dr
Chemical Engineering
The micro reaction technology has emerged over the past two decades as one of the promising synthetic tools that can create new horizons in many industrial and catalysis applications. There are many crucial issues that could simply be solved by adopting the approach of micro reaction technology. Those issues are including harmful environmental impact which could be minimized through integrated separation techniques and reagent recycling used in micro reactors. There are also other issues including kinetic, thermodynamic, and process safety concerns. Moreover, chemical manufacturing has been enhanced through running reactions in continuous mode using flow chemistry. This lead to a …
Cysteine As An Eco-Friendly Corrosion Inhibitor, Hany A. Elazab Dr
Cysteine As An Eco-Friendly Corrosion Inhibitor, Hany A. Elazab Dr
Chemical Engineering
In this paper, the aim was finding the most efficient corrosion inhibitor for mild steel placed in a 0.5M Sulfuric acid. The comparison was implemented between Cysteine (an eco-friendly corrosion inhibitor) and 4 different Ions-Cysteine Inhibitors (Copper- Cysteine, Nickel-Cysteine, Iron-Cysteine, and Cobalt-Cysteine). The solutions were prepared and evaluated while placed with a working electrode of mild steel with a copper rod attached to its end. To determine the best eco-friendly corrosion inhibitors two experiments were implemented: Electrochemical Impedance Spectra, and Linear Polarization. By the end of the experiment it was found that Copper- Cysteine was the most efficient eco-friendly corrosion …
The Flow Reactor Technology As A Modern Synthetic Tool For Preparation Of Pd/Fe3o4 Nanoparticles As A High Efficient Magnetic Catalyst For Co Oxidation, Hany A. Elazab
Chemical Engineering
No abstract provided.
Investigating The Agricultural Applications Of Acryl Amide Based Hydrogel, Hany A. Elazab Dr
Investigating The Agricultural Applications Of Acryl Amide Based Hydrogel, Hany A. Elazab Dr
Chemical Engineering
Hydrogel is classified as one of the most effective materials due to its widely used applications either in tissue or agriculture engineering. This scientific research aims to investigate the potential applications of hydrogels in the field of desert agriculture in dry places. In this research hydrogel was prepared under several conditions in order to evaluate and optimize the conditions. The research included optimiz-ing several factors including cross-linking agent, water temperatures and pH. The potential agricultural applications of hydrogel were also investigated.
Assembling Of Niox/Mwcnts-Gc Anodic Nanocatalyst For Water Electrolysis Applications, Yaser M. Asal Mr., Islam M. Al-Akraa Dr, Saher D. Khamis Eng
Assembling Of Niox/Mwcnts-Gc Anodic Nanocatalyst For Water Electrolysis Applications, Yaser M. Asal Mr., Islam M. Al-Akraa Dr, Saher D. Khamis Eng
Chemical Engineering
Glassy carbon (GC) electrode is intended to be modified with nickel oxide (NiOx) and multiwalled carbon nanotubes (MWCNTs) in the anodic reaction of water electrolysis. NiOx deposition time is optimized and a 5 min was enough to attain the maximum activity. A further modification of the catalyst with MWCNTs could greatly enhance its stability during continuous electrolysis. As an outcome, an energy amount of 21.7 kWh/KgO2 is minimized. Several electrochemical and materials characterization setups will be utilized to test the catalyst activity and to know its geometry and structure.
Kinetic Study Of Hydrolysis Of Ethyl Acetate Using Caustic Soda, Hany A. Elazab Dr
Kinetic Study Of Hydrolysis Of Ethyl Acetate Using Caustic Soda, Hany A. Elazab Dr
Chemical Engineering
We report here, the hydrolysis of ethyl acetate by using caustic soda which is followed by means of conductance measurements which is widely used in chemical industry. The main aim of this research is to study the parameters of production of ethyl acetate by chemical reaction kinetics using an anion ion-exchange acting as a catalyst and acid-base titrations. The reaction of ethyl acetate and sodium hy-droxide (caustic-soda) is done in a plug-flow reactor (steady-state tubular reactor) under the effect of different parameters including tem-perature, concentration and flow-rate, which allows the determination of activation energy and rate constants, due to large …
Preparation Of Insulating Material Based On Rice Straw And Inexpensive Polymers For Different Roofs, Fatma Zakaria, M. A. Radwan, M. A. Sadek, Hany A. Elazab Dr
Preparation Of Insulating Material Based On Rice Straw And Inexpensive Polymers For Different Roofs, Fatma Zakaria, M. A. Radwan, M. A. Sadek, Hany A. Elazab Dr
Chemical Engineering
Fossil fuel saving is part of the 21th century goal. One of the largest sectors that consumes energy is the building sector since it consumes 40% of the total energy in Europe through heating and cooling. Thus, the need of minimizing the energy consumption played an im-portant role in the development of building insulation materials. Selection of a proper material for building insulation differs according to the building surrounding climate and the properties required in the material. Building climate determines the insulating material location whether its internal or external while properties can differ ac-cording to many parameters that affect the …
Insulating Material Based On Shredded Used Tires And Inexpensive Polymers For Different Roofs, Hany A. Elazab Dr
Insulating Material Based On Shredded Used Tires And Inexpensive Polymers For Different Roofs, Hany A. Elazab Dr
Chemical Engineering
Thermal insulation is the ability of the material to prevent or reduce the heat transfer through the insulating material or between thermally contacted objectives. The increasing of the greenhouse effect leads to a continuous rising of the temperature especially in the summer, thus, there is a continuous research that aims to find more effective and environmental friendly insulation materials. Nowadays, a great number of proportions from polyurethane foam are produced every year in order to be used as an insulating material. Polyurethane foam shows an effective heat insulation results, but the price of the polyurethane is getting more expensive each …
Preparation And Characterization Of Decorative And Heat Insulating Floor Tiles For Buildings Roofs, Hany A. Elazab Dr
Preparation And Characterization Of Decorative And Heat Insulating Floor Tiles For Buildings Roofs, Hany A. Elazab Dr
Chemical Engineering
Since the beginning of the 5th century, people felt the urge to construct a sort of heat insulation system to their houses. This research paper focuses on the preparation, development and design of heat insulating tiles using materials like automobile tires powder and rice husk which are materials that are available at almost negligible costs and great amounts. Throughout this paper, experimental work will be provided to document, analyze and compare different insulating materials based on their thermal conductivity factor (K-factor), eco-nomic aspects, contribution to a greener earth, and mechanical properties. The results show that a mixture of used automobile …
Fabrication Of Mnox/Mwcnts-Gc Nanocatalyst For Oxygen Evolution Reaction, Yaser M. Asal Mr, Islam M. Al-Akraa Dr, Amr M. Arafa Eng.
Fabrication Of Mnox/Mwcnts-Gc Nanocatalyst For Oxygen Evolution Reaction, Yaser M. Asal Mr, Islam M. Al-Akraa Dr, Amr M. Arafa Eng.
Chemical Engineering
Manganese oxide (MnOx) and multiwalled carbon nanotubes (MWCNTs) are intended to modify the GC electrode for oxygen evolution reaction (OER). Optimization of MnOx loading is carried out and the deposition of 55 cycles was sufficient to obtain the highest activity toward OER. The stability of the catalyst is enhanced by the addition of MWCNTs. As a result, an amount of 22 kWh/Kg of O2 of energy is saved. Several techniques including cyclic voltammetry, linear sweep voltammetry, chronoamperometry, chronopotentiometry, field-emission scanning electron microscopy, and energy dispersive X-ray spectroscopy will be combined to track the catalyst activity and to determine its …
Preparation And Characterization Of Bullet-Proof Vests Based On Polyamide Fibers, Hany A. Elazab Dr
Preparation And Characterization Of Bullet-Proof Vests Based On Polyamide Fibers, Hany A. Elazab Dr
Chemical Engineering
Fiber reinforced plastics (FRP) is classified as one of the main classes of structural materials. Due to its high strength and light weight, it is considered for being used in a large scale of different applications. Particularly, bullet proof vests are widely used in order to protect the soldiers from being targeted in battle fields, however many modifications are being implemented to enhance the bullet resistivity of the vests for achieving more protection. This scientific paper investigates the enhanced properties of Twaron CT 736 when it is being reinforced with epoxy resin and topped with silicon carbide ceramics. The potential …
Laser Vaporization And Controlled Condensation (Lvcc) Of Graphene Supported Pd/Fe3o4 Nanoparticles As An Efficient Magnetic Catalysts For Suzuki Cross – Coupling, Hany A. Elazab Dr
Laser Vaporization And Controlled Condensation (Lvcc) Of Graphene Supported Pd/Fe3o4 Nanoparticles As An Efficient Magnetic Catalysts For Suzuki Cross – Coupling, Hany A. Elazab Dr
Chemical Engineering
Herein, a reproducible, reliable, and efficient method was reported for the synthesis of palladium nanoparticles dispersed on a composite of Fe3O4 and graphene (Pd-Fe3O4/G) as a highly efficient active catalyst for being used in Suzuki cross–coupling reactions. Graphene supported Pd/Fe3O4 nanoparticles (Pd-Fe3O4/G) exhibit a remarkable catalytic performance towards Suzuki coupling reactions. Moreover, the prepared catalyst could be recycled for up to three times with high catalytic activity. The catalyst was prepared using LVCC synthesis; the prepared catalyst is highly magnetic which provides a platform to facilitate the separation process of the catalyst through applying an external magnetic field using a …
The Catalytic Activity Of Copper Oxide Nanoparticles Towards Carbon Monoxide Oxidation Catalysis: Microwave – Assisted Synthesis Approach, Hany A. Elazab Dr
The Catalytic Activity Of Copper Oxide Nanoparticles Towards Carbon Monoxide Oxidation Catalysis: Microwave – Assisted Synthesis Approach, Hany A. Elazab Dr
Chemical Engineering
In this research, we report a simple, versatile, and reproducible method for the synthesis of copper oxide nanoparticles via microwave assisted synthesis approach. The important advantage of this catalyst is due to its important role not only in the low temperature oxidation of CO but also in potential applications in pharmaceutical and fine chemical synthesis. The results reveal that the copper oxide catalyst has particularly a remarkable high activity for CO oxidation catalysis as it was found that copper oxide (CuO) catalyst has 100% conversion of carbon monoxide into carbon dioxide at 175 oC. This also could be attributed to …
Microwave-Assisted Synthesis Of Palladium Nanoparticles Supported On Copper Oxide In Aqueous Medium As An Efficient Catalyst For Suzuki Cross-Coupling Reaction, Hany A. Elazab, M. A. Sadek, Tamer T. El-Idreesy
Microwave-Assisted Synthesis Of Palladium Nanoparticles Supported On Copper Oxide In Aqueous Medium As An Efficient Catalyst For Suzuki Cross-Coupling Reaction, Hany A. Elazab, M. A. Sadek, Tamer T. El-Idreesy
Chemical Engineering
We report here a reliable green method for the synthesis of palladium nanoparticles supported on copper oxide as a highly active and efficient catalyst for Suzuki cross-coupling reaction. The experimental synthetic approach is based on microwave-assisted chemical reduction of an aqueous mixture of palladium and copper salt simultaneously using hydrazine hydrate as reducing agent. The catalyst was fully characterized using various techniques showing well-dispersed palladium nanoparticles. The catalytic activity and recyclability of the prepared catalyst were experimentally explored in the ligand-free Suzuki cross-coupling reaction with a diverse series of functionalized substrates. The synthesized Pd/CuO catalyst shows many advantages beside its …
Fabrication Of Mnox/Mwcnts-Gc Nanocatalyst For Oxygen Evolution Reaction, Islam M. Al-Akraa Dr., Yaser M. Asal Mr, Amr M. Arafa Eng.
Fabrication Of Mnox/Mwcnts-Gc Nanocatalyst For Oxygen Evolution Reaction, Islam M. Al-Akraa Dr., Yaser M. Asal Mr, Amr M. Arafa Eng.
Chemical Engineering
Manganese oxide (MnOx) and multiwalled carbon nanotubes (MWCNTs) are intended to modify the GC electrode for oxygen evolution reaction (OER). Optimization of MnOx loading is carried out and the deposition of 55 cycles was sufficient to obtain the highest activity toward OER. The stability of the catalyst is enhanced by the addition of MWCNTs. As a result, an amount of 22 kWh/Kg of O2 of energy is saved. Several techniques including cyclic voltammetry, linear sweep voltammetry, chronoamperometry, chronopotentiometry, field-emission scanning electron microscopy, and energy dispersive X-ray spectroscopy will be combined to track the catalyst activity and to determine its morphology …
Partial Oxidation Of Ethane To Acetic Acid Using A Metallic Pd Promoted Movnb Catalyst Supported On Titania, Sulaiman Al-Mayman, Abdulrhman S. Al-Awadi, Yousef S. Al-Zeghayer, Moustafa A. Soliman
Partial Oxidation Of Ethane To Acetic Acid Using A Metallic Pd Promoted Movnb Catalyst Supported On Titania, Sulaiman Al-Mayman, Abdulrhman S. Al-Awadi, Yousef S. Al-Zeghayer, Moustafa A. Soliman
Chemical Engineering
The partial oxidation of ethane to acetic acid on a multi-component Mo16V6.37Nb2.05Pdx oxide catalyst supported on Degussa P25 titania has been investigated. The catalyst was characterized using BET surface area, X ray diffractometer (XRD) and transmission electron microscopy (TEM). The reaction was carried out in a differential reactor in a temperature range of 200-275°C and at a total pressure of 200 psi. The addition of trace amounts of nano-palladium, either as palladium oxides or metallic palladium, enhanced ethane oxidation towards the formation of acetic acid with near-complete depletion of the ethylene intermediate from the reactor effluent. The introduction of nano-Pd …
Assembling Of Niox/Mwcnts-Gc Anodic Nanocatalyst For Water Electrolysis Applications, Islam M. Al-Akraa Dr., Yaser M. Asal Mr, Saher D. Khamis Eng
Assembling Of Niox/Mwcnts-Gc Anodic Nanocatalyst For Water Electrolysis Applications, Islam M. Al-Akraa Dr., Yaser M. Asal Mr, Saher D. Khamis Eng
Chemical Engineering
Glassy carbon (GC) electrode is intended to be modified with nickel oxide (NiOx) and multiwalled carbon nanotubes (MWCNTs) in the anodic reaction of water electrolysis. NiOx deposition time is optimized and a 5 min was enough to attain the maximum activity. A further modification of the catalyst with MWCNTs could greatly enhance its stability during continuous electrolysis. As an outcome, an energy amount of 21.7 kWh/KgO2 is minimized. Several electrochemical and materials characterization setups will be utilized to test the catalyst activity and to know its geometry and structure.
Fabrication Of Cuox-Pd Nanocatalyst Supported On A Glassy Carbon Electrode For Enhanced Formic Acid Electro-Oxidation, Islam M. Al-Akraa Dr., Ahmad M. Mohammad Prof, Mohamed S. El-Deab Prof, Bahgat E. El-Anadouli Prof
Fabrication Of Cuox-Pd Nanocatalyst Supported On A Glassy Carbon Electrode For Enhanced Formic Acid Electro-Oxidation, Islam M. Al-Akraa Dr., Ahmad M. Mohammad Prof, Mohamed S. El-Deab Prof, Bahgat E. El-Anadouli Prof
Chemical Engineering
Formic acid (FA) electro-oxidation (FAO) was investigated at a binary catalyst composed of palladium nanoparticles (PdNPs) and copper oxide nanowires (CuOxNWs) and assembled onto a glassy carbon (GC) electrode. /e deposition sequence of PdNPs and CuOxNWs was properly adjusted in such a way that could improve the electrocatalytic activity and stability of the electrode toward FAO. Several techniques including cyclic voltammetry, chronoamperometry, field-emission scanning electron microscopy, energy dispersive X-ray spectroscopy, and X-ray diffraction were all combined to report the catalyst’s activity and to evaluate its morphology, composition, and structure. /e highest catalytic activity and stability were obtained at the CuOx/Pd/GC …
Performance Of Nanoporous Carbon Membrane For Hydrogen Recovery, Abdulrahman A. Al-Rabiah, Abdelhamid M. Ajbar, Moustafa A. Soliman, Omar Y. Abdelaziz
Performance Of Nanoporous Carbon Membrane For Hydrogen Recovery, Abdulrahman A. Al-Rabiah, Abdelhamid M. Ajbar, Moustafa A. Soliman, Omar Y. Abdelaziz
Chemical Engineering
The aim of this work is to study the performance of nanoporous carbon membrane for hydrogen recovery from off-gas streams. The study is based on a rigorous mathematical model which can predict the performance of nanoporous selective surface flow (SSF) carbon membrane. Basically, the developed model is based on two transport mechanisms: the dusty gas flow through porous media and the surface adsorption-diffusion. The model was employed to simulate the hydrogen recovery from off-gas stream using SSF carbon membrane at different operating conditions. The separation performance of hydrogen-hydrocarbon mixture by nanoporous carbon membrane was evaluated and described. A comparison between …
A Novel Graphical Approach For Mass Exchange Networks Using Composition Driving Force, Nessren Farrag, Dina Kamel, Ayat Ossama, Mamdouh Gadalla, Mai Fouad
A Novel Graphical Approach For Mass Exchange Networks Using Composition Driving Force, Nessren Farrag, Dina Kamel, Ayat Ossama, Mamdouh Gadalla, Mai Fouad
Chemical Engineering
Raw materials are considered as a corner stone for both chemical and process industries. Raw materials efficient utilization and usage within the process saves a lot. Mass integration is the most competent path to minimize the economic and environmental losses, by minimizing both the amounts of external mass separating agents and waste disposal. Mass exchange networks or MENs is the tool used to apply this integration. This article presents a new graphical approach, based on the composition driving force, to analyse the mass integration and exchange networks. The new approach is illustrated graphically, and can be applied on existing and …
Reaction Kinetics Of Ethane Partial Oxidation To Acetic Acid, Sulaiman Al-Mayman, Moustafa A. Soliman, Abdulrhman S. Al-Awadi, Yousef S. Al-Zeghayer
Reaction Kinetics Of Ethane Partial Oxidation To Acetic Acid, Sulaiman Al-Mayman, Moustafa A. Soliman, Abdulrhman S. Al-Awadi, Yousef S. Al-Zeghayer
Chemical Engineering
The partial oxidation of ethane to ethylene and acetic acid on supported MoVNbPd/TiO2 (P25 of Degussa) has been investigated. Pd was added in a nano-metallic form. The catalyst composition was also different from similar studied catalysts. This results in a better selectivity towards acetic acid formation. The reaction was carried out in a tubular reactor at temperature range 225–275 °C, total pressure range 0–200 psig and oxygen percentage in the feed gas of 10–40%. The feed gas contains ethane and oxygen. In this work, we develop a kinetic model for the reaction for the developed catalyst. In this model, we …