All Outputs (482)

Synthesis of manganese oxide/carbon nanotube nanocomposites using wet chemical method (2007)
Journal Article
Zein, S. H. S., Yeoh, L. C., Chai, S. P., Mohamed, A. R., & Mahayuddin, M. E. M. (2007). Synthesis of manganese oxide/carbon nanotube nanocomposites using wet chemical method. Journal of Materials Processing Technology, 190(1-3), 402-405. https://doi.org/10.1016/j.jmatprotec.2007.03.104

Novel material with peculiar properties can be obtained by introducing foreign materials into the inner cavity of carbon nanotubes. It has been suggested that the materials encapsulated into the hollow regions of carbon nanotubes could result in a si... Read More about Synthesis of manganese oxide/carbon nanotube nanocomposites using wet chemical method.

The design and photoreaction kinetic modeling of a gas-phase titania foam packed bed reactor (2007)
Journal Article
Ibhadon, A. O., Arabatzis, I. M., Falaras, P., & Tsoukleris, D. (2007). The design and photoreaction kinetic modeling of a gas-phase titania foam packed bed reactor. Chemical Engineering Journal, 133(1-3), 317-323. https://doi.org/10.1016/j.cej.2007.02.018

The design and testing as well as theoretical and experimental study involving kinetic modeling and photooxidation reactions of a gas-phase photocatalytic packed bed reactor (PBR) based on a porous titania foam is reported. The photoreactor was desig... Read More about The design and photoreaction kinetic modeling of a gas-phase titania foam packed bed reactor.

Synthesizing carbon nanotubes and carbon nanofibers over supported-nickel oxide catalysts via catalytic decomposition of methane (2007)
Journal Article
Chai, S. P., Zein, S. H. S., & Mohamed, A. R. (2007). Synthesizing carbon nanotubes and carbon nanofibers over supported-nickel oxide catalysts via catalytic decomposition of methane. Diamond and related materials, 16(8), 1656-1664. https://doi.org/10.1016/j.diamond.2007.02.011

Supported-NiO catalysts were tested in the synthesis of carbon nanotubes and carbon nanofibers by catalytic decomposition of methane at 550 °C and 700 °C. Catalytic activity was characterized by the conversion levels of methane and the amount of carb... Read More about Synthesizing carbon nanotubes and carbon nanofibers over supported-nickel oxide catalysts via catalytic decomposition of methane.

Activated carbon from olive kernels in a two-stage process: industrial improvement (2007)
Journal Article
Zabaniotou, A., Stavropoulos, G., & Skoulou, V. (2008). Activated carbon from olive kernels in a two-stage process: industrial improvement. Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies, 99(2), 320-326. https://doi.org/10.1016/j.biortech.2006.12.020

Activated carbons have been prepared from olive kernels and their adsorptive characteristics were investigated. A two stage process of pyrolysis-activation has been tested in two scales: (a) laboratory scale pyrolysis and chemical activation with KOH... Read More about Activated carbon from olive kernels in a two-stage process: industrial improvement.

Study of hydrogen storage by carbonaceous material at room temperature (2007)
Journal Article
Hassan, N. H. A., Mohamed, A. R., & Zein, S. H. S. (2007). Study of hydrogen storage by carbonaceous material at room temperature. Diamond and related materials, 16(8), 1517-1523. https://doi.org/10.1016/j.diamond.2006.12.042

Recently, many studies have been reported about a variety of carbon materials in adsorbing hydrogen. Regarding that, hydrogen adsorption in different carbonaceous materials was investigated at room temperature, 298 K and three different pressures whi... Read More about Study of hydrogen storage by carbonaceous material at room temperature.

Investigation study for technological application of alternative methods for the energy exploitation of biomass/agricultural residues in Northern Greece (2007)
Journal Article
Zabaniotou, A., Skoulou, V., Koufodimos, G., & Samaras, Z. (2007). Investigation study for technological application of alternative methods for the energy exploitation of biomass/agricultural residues in Northern Greece. Thermal science Society of Heat Transfer Engineers of Serbia and Montenegro, 11(3), 115-123. https://doi.org/10.2298/tsci0703115z

Biomass energy potential is addressed to be the most promising among the renewable energy sources, due to its spread and availability worldwide. Apart form that, biomass has the unique advantage among the rest of renewable energy sources, to be able... Read More about Investigation study for technological application of alternative methods for the energy exploitation of biomass/agricultural residues in Northern Greece.

COx-Free Hydrogen and Carbon Nanofibers Produced from Direct Decomposition of Methane on Nickel-Based Catalysts (2006)
Journal Article
Chai, S. P., Zein, S. H. S., & Mohamed, A. R. (2006). COx-Free Hydrogen and Carbon Nanofibers Produced from Direct Decomposition of Methane on Nickel-Based Catalysts. Journal of natural gas chemistry / Chengdu Institute of Organic Chemistry, the Chinese Academy of Sciences, 15(4), 253-258. https://doi.org/10.1016/S1003-9953%2807%2960002-4

Direct decomposition of methane was carried out using a fixed-bed reactor at 700 °C for the production of CO x -free hydrogen and carbon nanofibers. The catalytic performance of NiO-M/SiO 2 catalysts (where M=AgO, CoO, CuO, FeO, MnO x and MoO) in met... Read More about COx-Free Hydrogen and Carbon Nanofibers Produced from Direct Decomposition of Methane on Nickel-Based Catalysts.

Production of High Purity Multi-Walled Carbon Nanotubes from Catalytic Decomposition of Methane (2006)
Journal Article
Hong, K. B., Ismail, A. A. B., Mahayuddin, M. E. B. M., Mohamed, A. R., & Zein, S. H. S. (2006). Production of High Purity Multi-Walled Carbon Nanotubes from Catalytic Decomposition of Methane. Journal of natural gas chemistry / Chengdu Institute of Organic Chemistry, the Chinese Academy of Sciences, 15(4), 266-270. https://doi.org/10.1016/S1003-9953%2807%2960004-8

Acid-based purification process of multi-walled carbon nanotubes (MWNTs) produced via catalytic decomposition of methane with NiO/TiO 2 as a catalyst is described. By combining the oxidation in air and the acid refluxes, the impurities, such as amorp... Read More about Production of High Purity Multi-Walled Carbon Nanotubes from Catalytic Decomposition of Methane.

Moderate temperature synthesis of single-walled carbon nanotubes on alumina supported nickel oxide catalyst (2006)
Journal Article
Chai, S. P., Zein, S. H. S., & Mohamed, A. R. (2007). Moderate temperature synthesis of single-walled carbon nanotubes on alumina supported nickel oxide catalyst. Materials letters, 61(16), 3519-3521. https://doi.org/10.1016/j.matlet.2006.11.108

A simple nickel oxide catalyst has been developed in synthesizing single-walled carbon nanotubes (SWNTs) at moderate temperature. The catalyst used in the experiment was without a preceding reduction in hydrogen flow. The synthesis of SWNTs was perfo... Read More about Moderate temperature synthesis of single-walled carbon nanotubes on alumina supported nickel oxide catalyst.

From biomass to electricity through integrated gasification/SOFC system-optimization and energy balance (2006)
Journal Article
Athanasiou, C., Coutelieris, F., Vakouftsi, E., Skoulou, V., Antonakou, E., Marnellos, G., & Zabaniotou, A. (2007). From biomass to electricity through integrated gasification/SOFC system-optimization and energy balance. International Journal of Hydrogen Energy, 32(3), 337-342. https://doi.org/10.1016/j.ijhydene.2006.06.048

In this paper the integrated process of biomass gasification and a solid oxide fuel cell (SOFC) was studied in terms of thermodynamics. The study is based on an ongoing project intending to develop an innovative sustainable technology with high effic... Read More about From biomass to electricity through integrated gasification/SOFC system-optimization and energy balance.

Formation of Y-junction carbon nanotubes by catalytic CVD of methane (2006)
Journal Article
Chai, S. P., Zein, S. H. S., & Mohamed, A. R. (2006). Formation of Y-junction carbon nanotubes by catalytic CVD of methane. Solid state communications, 140(5), 248-250. https://doi.org/10.1016/j.ssc.2006.08.006

Y-junction carbon nanotubes were grown by catalytic CVD of methane at 700 {ring operator} C on NiO-CuO-MoO(7:2:1) (w/w/w)/SiO 2 catalyst. For comparison, NiO-CuO(8:2) (w/w)/SiO 2 and NiO-MoO(8:2) (w/w)/SiO 2 catalysts were tested for carbon nanotube... Read More about Formation of Y-junction carbon nanotubes by catalytic CVD of methane.

Preparation of carbon nanotubes over cobalt-containing catalysts via catalytic decomposition of methane (2006)
Journal Article
Chai, S. P., Zein, S. H. S., & Mohamed, A. R. (2006). Preparation of carbon nanotubes over cobalt-containing catalysts via catalytic decomposition of methane. Chemical Physics Letters, 426(4-6), 345-350. https://doi.org/10.1016/j.cplett.2006.05.026

Decomposition of methane into carbon nanotubes over CoO catalysts supported on various catalyst supports at 550 °C and 700 °C was investigated. The effect of catalyst promoters on the supported CoO catalysts at 700 °C was also examined. Electron micr... Read More about Preparation of carbon nanotubes over cobalt-containing catalysts via catalytic decomposition of methane.

Investigation of agricultural and animal wastes in Greece and their allocation to potential application for energy production (2006)
Journal Article
Skoulou, V., & Zabaniotou, A. (2007). Investigation of agricultural and animal wastes in Greece and their allocation to potential application for energy production. Renewable & sustainable energy reviews, 11(8), 1698-1719. https://doi.org/10.1016/j.rser.2005.12.011

Agricultural and animal wastes constitute a high proportion of biomass in Greece, and are able to play an important role towards the satisfaction of heat and/or energy and related material supply, with respect to the environmental protection targets.... Read More about Investigation of agricultural and animal wastes in Greece and their allocation to potential application for energy production.

Screening of metal oxide catalysts for carbon nanotubes and hydrogen production via catalytic decomposition of methane (2006)
Journal Article
Zein, S. H., Mohamed, A. R., & Chai, S. P. (2006). Screening of metal oxide catalysts for carbon nanotubes and hydrogen production via catalytic decomposition of methane. Studies in surface science and catalysis, 159, 725-728. https://doi.org/10.1016/S0167-2991%2806%2981699-X

A number of catalysts prepared from transition metals such as copper (Cu), iron (Fe), nickel (Ni), cobalt (Co) and manganese (Mn) on TiO 2 support were tested for the decomposition of methane into hydrogen and carbon. These catalysts were used in the... Read More about Screening of metal oxide catalysts for carbon nanotubes and hydrogen production via catalytic decomposition of methane.

Mn/Ni/TiO2 catalyst for the production of hydrogen and carbon nanotubes from methane decomposition (2004)
Journal Article
Zein, S. H. S., & Mohamed, A. R. (2004). Mn/Ni/TiO2 catalyst for the production of hydrogen and carbon nanotubes from methane decomposition. Energy and Fuels, 18(5), 1336-1345. https://doi.org/10.1021/ef0340864

The decomposition of methane into carbon and hydrogen over 15 mol % MnO x /20 mol %NiO/ TiO 2 catalysts was investigated. The effects of catalyst synthesis and pretreatment of 15 mol % MnO x /20 mol % NiO/TiO 2 catalysts for the activity and morpho... Read More about Mn/Ni/TiO2 catalyst for the production of hydrogen and carbon nanotubes from methane decomposition.

Kinetic studies on catalytic decomposition of methane to hydrogen and carbon over Ni/TiO2catalyst (2004)
Journal Article
Zein, S. H. S., Mohamed, A. R., & Sai, P. S. T. (2004). Kinetic studies on catalytic decomposition of methane to hydrogen and carbon over Ni/TiO2catalyst. Industrial & engineering chemistry research, 43(16), 4864-4870. https://doi.org/10.1021/ie034208f

Experiments were conducted in a fixed-bed catalytic reactor to study the decomposition of methane to hydrogen and carbon over 13 wt % Ni/TiO 2 -based catalyst. The variables include the volumetric flow rate of reactant (relative partial pressures of... Read More about Kinetic studies on catalytic decomposition of methane to hydrogen and carbon over Ni/TiO2catalyst.

Crystallization Regimes and Reptation in Polypropylene Molecular Weight Fractions (1999)
Journal Article
Ibhadon, A. O. (1999). Crystallization Regimes and Reptation in Polypropylene Molecular Weight Fractions. Journal of Applied Polymer Science, 71(4), 579-584. https://doi.org/10.1002/%28sici%291097-4628%2819990124%2971%3A4%3C579%3A%3Aaid-app9%3E3.0.co%3B2-6

Crystal growth rate data based on the kinetic nucleation theory of chain folding and the effect of reptation, have been used to predict the rate of crystal growth at moderate to high supercoolings in iPP molecular weight fractions. Growth rate data o... Read More about Crystallization Regimes and Reptation in Polypropylene Molecular Weight Fractions.

Fracture mechanics of polypropylene: effect of molecular characteristics, crystallisation conditions, and annealing on morphology and impact performance (1998)
Journal Article
Ibhadon, A. O. (1998). Fracture mechanics of polypropylene: effect of molecular characteristics, crystallisation conditions, and annealing on morphology and impact performance. Journal of Applied Polymer Science, 69(13), 2657-2661. https://doi.org/10.1002/%28SICI%291097-4628%2819980926%2969%3A13%3C2657%3A%3AAID-APP16%3E3.0.CO%3B2-R

Fracture mechanics study of polypropylene samples of various molecular weight, obtained under different crystallizations conditions, is reported. Fracture toughness values obtained at high speed of impact as well as at low temperatures increased with... Read More about Fracture mechanics of polypropylene: effect of molecular characteristics, crystallisation conditions, and annealing on morphology and impact performance.

Physical aging in isotactic polypropylene (1996)
Journal Article
Ibhadon, A. O. (1996). Physical aging in isotactic polypropylene. Journal of Applied Polymer Science, 62(11), 1843-1846. https://doi.org/10.1002/%28SICI%291097-4628%2819961212%2962%3A11%3C1843%3A%3AAID-APP8%3E3.0.CO%3B2-Q

Physical aging studies were made using commercial and laboratory samples of isotactic polypropylene. Linear and nonlinear viscoelastic responses were measured after quenching the glass from above the glass transition temperatures to below the glass t... Read More about Physical aging in isotactic polypropylene.

Separation of chromium ions through supported liquid membranes and membrane reactors (1994)
Journal Article
Scott, K., & Ibhadon, A. (1994). Separation of chromium ions through supported liquid membranes and membrane reactors. Developments in chemical engineering and mineral processing, 2(4), 195-201. https://doi.org/10.1002/apj.5500020402

The use of supported liquid membranes (SLM) for the selective separation of chromium ions from aqueous solutions is described. Flat‐sheet microporous polypropylene membranes loaded with Aliquat 336 in o‐xylene are used. The use of liquid membranes in... Read More about Separation of chromium ions through supported liquid membranes and membrane reactors.