All Outputs (513)

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.

Production of syngas by pressurized fluidized bed gasification of German Lignite in a H2O/CO2 atmosphere
Presentation / Conference Contribution
Long, X., Skoulou, V., Paterson, N., & Agorio-Millan, M. (2014, September). Production of syngas by pressurized fluidized bed gasification of German Lignite in a H2O/CO2 atmosphere. Presented at 10th European Conference on Coal Research and its Applications (10th ERCCIA)

The oxyfuel gasification concept enables a N2 free gas to be obtained by fluidised bed gasification (FBG). This process uses CO2 to moderate the bed temperature and thus agglomeration. An alternative cooling medium is steam, which could be employed a... Read More about Production of syngas by pressurized fluidized bed gasification of German Lignite in a H2O/CO2 atmosphere.

Experimental characterization of interfacial wave structure of a falling liquid film in a vertical large pipe diameter
Presentation / Conference Contribution
Hasan, A., Azzopardi, B., Hewakandamby, B., AlAufi, Y., Watson, N., & Mohammed, S. (2016, May). Experimental characterization of interfacial wave structure of a falling liquid film in a vertical large pipe diameter. Presented at 9th International Conference of Multiphase Flow, ICMF, Italy

There is considerable literature on the thicknesses of falling liquid films, much of which is focussed on either flat plates or small diameter pipes. Many studies provide time series data of the film thickness at one or two points on the pipe wall. T... Read More about Experimental characterization of interfacial wave structure of a falling liquid film in a vertical large pipe diameter.

Experimental study of interfacial structure of a falling liquid film in a vertical pipe
Presentation / Conference Contribution
Hasan, A., Azzopardi, B., & Hewakandamby, B. (2015, November). Experimental study of interfacial structure of a falling liquid film in a vertical pipe. Presented at American Physical Society-Fluid Dynamics Fall Meeting

Many studies in the literature provide time series data of the film thickness at one or two points on the pipe wall. Most of these studies focussed on either flat plates or small diameter pipes. The main aim of this paper is to study the characterist... Read More about Experimental study of interfacial structure of a falling liquid film in a vertical pipe.

Taylor bubbles at high viscosity ratios: experiments and numerical simulations
Presentation / Conference Contribution
Hasan, A., Hewakandamby, B., Azzopardi, B., Xie, Z., Pain, C., & Matar, O. (2015, November). Taylor bubbles at high viscosity ratios: experiments and numerical simulations. Presented at 68th Annual Meeting of the APS Division of Fluid Dynamics, USA, Boston

The Taylor bubble is a single long bubble which nearly fills the entire cross section of a liquid-filled circular tube, often occurring in gas-liquid slug flows in many industrial applications, particularly oil and gas production. The objective of th... Read More about Taylor bubbles at high viscosity ratios: experiments and numerical simulations.

Slugs in a large diameter column with air and high viscosity silicone oil
Presentation / Conference Contribution
Hasan, A., & Azzopardi, B. (2014, November). Slugs in a large diameter column with air and high viscosity silicone oil. Presented at 67th Annual Meeting of the APS Division of Fluid Dynamics, San Francisco, USA

Very little information is known about the behaviour of high viscous liquids (> 100 Pa.s) in two phase slug flows. Experiments were carried out to study the behaviour of silicone oil (300 Pa.s) in gas bubble column using electrical capacitance tomogr... Read More about Slugs in a large diameter column with air and high viscosity silicone oil.

Numerical study of Taylor bubbles with adaptive unstructured meshes
Presentation / Conference Contribution
Hasan, A., Xie, Z., Pavlidis, D., Percival, J., Pain, C., Matar, O., & Azzopardi, B. (2014, November). Numerical study of Taylor bubbles with adaptive unstructured meshes. Presented at 67th Annual Meeting of the APS Division of Fluid Dynamics, San Francisco, USA

The Taylor bubble is a single long bubble which nearly fills the entire cross section of a liquid-filled circular tube. This type of bubble flow regime often occurs in gas-liquid slug flows in many industrial applications, including oil-and-gas produ... Read More about Numerical study of Taylor bubbles with adaptive unstructured meshes.

Modelling and measurement of the gas flow rate in vertical annular gas-water flow using a conductance multiphase Venturi meter
Presentation / Conference Contribution
Hasan, A., & Lucas, G. (2009, June). Modelling and measurement of the gas flow rate in vertical annular gas-water flow using a conductance multiphase Venturi meter. Presented at What Where When: Multi-dimensional Advances for Industrial Process Monitoring, University of Leeds, UK

Separated flow in a Venturi meter is highly complex and the application of a homogenous flow model could not reasonably be expected to lead to highly accurate results. If this is the case, a gas volume fraction measurement technique at the throat mus... Read More about Modelling and measurement of the gas flow rate in vertical annular gas-water flow using a conductance multiphase Venturi meter.