| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Connolley, Thomas
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (38/38 displayed)
- 2024A micromechanical study of heat treatment induced hardening in α -brasscitations
- 2024Revealing per-grain and neighbourhood stress interactions of a deforming ferritic steel via three-dimensional X-ray diffractioncitations
- 2024Investigating grain-resolved evolution of lattice strains during plasticity and creep using 3DXRD and crystal plasticity modellingcitations
- 2024In-Situ synchrotron investigation of elastic and tensile properties of oxide dispersion strengthened EUROFER97 steel for advanced fusion reactorscitations
- 2023The effect of porosity on strain evolution and failure of soldered, small-diameter, thin-walled metallic pipescitations
- 2023Correlative full field X-ray compton scattering imaging and X-ray computed tomography for in situ observation of Li ion batteriescitations
- 2023In situ correlative observation of humping-induced cracking in directed energy deposition of nickel-based superalloys
- 2023Grain-level effects on in-situ deformation-induced phase transformations in a complex-phase steel using 3DXRD and EBSDcitations
- 2023Per-grain and neighbourhood stress interactions during deformation of a ferritic steel obtained using three-dimensional X-ray diffractioncitations
- 20223D correlative imaging of lithium ion concentration in a vertically oriented electrode microstructure with a density gradientcitations
- 2022Mechanical characterisation of V-4Cr-4Ti alloy:Tensile tests under high energy synchrotron diffractioncitations
- 2022Mechanical characterisation of V-4Cr-4Ti alloycitations
- 2021Time-resolved in-situ X-ray diffraction study of CaO and CaO:Ca3Al2O6 composite catalysts for biodiesel productioncitations
- 2021Time-resolved in-situ X-ray diffraction study of CaO and CaO:Ca3Al2O6 composite catalysts for biodiesel productioncitations
- 2021Time-resolved in-situ X-ray diffraction study of CaO and CaO:Ca 3 Al 2 O 6 composite catalysts for biodiesel productioncitations
- 2021Correlative synchrotron X-ray imaging and diffraction of directed energy deposition additive manufacturingcitations
- 2021Estimating single-crystal elastic constants of polycrystalline β metastable titanium alloy: A Bayesian inference analysis based on high energy X-ray diffraction and micromechanical modelingcitations
- 2020In situ measurement of elastic and total strains during ambient and high temperature deformation of a polygranular graphitecitations
- 2020Unifying the effects of in and out-of-plane constraint on the fracture of ductile materialscitations
- 2020A novel electromagnetic apparatus for in-situ synchrotron X-ray imaging study of the separation of phases in metal solidificationcitations
- 2019Validating 3D two-parameter fracture mechanics models for structural integrity assessmentscitations
- 2019Localised prior strain-hardening increases the tearing resistance of ductile steelcitations
- 2019Application of neutron imaging to detect and quantify fatigue crackingcitations
- 2019Understanding the Highly Dynamic Phenomena in Ultrasonic Melt Processing by Ultrafast Synchrotron X-ray Imaging
- 2018In-situ synchrotron X-ray radiography observation of primary Al2Cu intermetallic growth on fragments of aluminium oxide filmcitations
- 2018Revealing internal flow behaviour in arc welding and additive manufacturing of metalscitations
- 2018Revealing internal flow behaviour in arc welding and additive manufacturing of metalscitations
- 20183D characterisation of the Fe-rich intermetallic phases in recycled Al alloys by synchrotron X-ray microtomography and skeletonisationcitations
- 2018In-situ synchrotron X-ray radiography observation of primary Al 2 Cu intermetallic growth on fragments of aluminium oxide filmcitations
- 2017In-situ observation of ultrasonic cavitation-induced fragmentation of the primary crystals formed in Al alloyscitations
- 2017In-situ synchrotron X-ray radiography observation of primary Al2Cu intermetallic growth on fragments of aluminium oxide filmcitations
- 2017A synchrotron X-radiography study of the fragmentation and refinement of primary intermetallic particles in an Al-35 Cu alloy induced by ultrasonic melt processingcitations
- 2017In situ observation of ultrasonic cavitation-induced fragmentation of the primary crystals formed in Al alloys
- 2016Direct observation of elastic and plastic strain fields during ductile tearing of a ferritic steelcitations
- 2016A refining mechanism of primary Al3Ti intermetallic particles by ultrasonic treatment in the liquid statecitations
- 2016A refining mechanism of primary Al 3 Ti intermetallic particles by ultrasonic treatment in the liquid statecitations
- 2015Transgranular liquation cracking of grains in the semi-solid state
- 2001Initiation and growth of short cracks in u-notch bend specimens of superalloy IN718 during high temperature low cycle fatigue.
Places of action
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article
Time-resolved in-situ X-ray diffraction study of CaO and CaO:Ca3Al2O6 composite catalysts for biodiesel production
Abstract
Alternative and sustainable waste sources are receiving increasing attention as they can be used to produce biofuels with a low carbon footprint. Waste fish oil is one such example and can be considered an abundant and sustainable waste source to produce biodiesel.Ultimately this could lead to fishing communities having their own "off-grid" source of fuel for boats and vehicles. At the industrial level biodiesel is currently produced by homogeneous catalysis because of the high catalyst activity and selectivity. In contrast, heterogeneous catalysis offers several advantages such as improved reusability, reduced waste and lower processing costs.Here we investigate the phase evolution of two heterogeneous catalysts, CaO and a Ca<sub>3</sub>Al<sub>2</sub>O<sub>6</sub>:CaO ('C3A:CaO') composite, under in-situ conditions for biodiesel production from fish oil.A new reactor was designed to monitor the evolution of the crystalline catalyst during the reaction using synchrotron powder X-ray diffraction (PXRD).The amount of calcium diglyceroxide (CaDG) began to increase rapidly after approximately 30 minutes, for both catalysts. This rapid increase in CaDG could be linked to ex-situ NMR studies which showed that the conversion of fish oil to biodiesel rapidly increased after 30 minutes.The key to the difference in activity of the two catalysts appears to be that the Ca<sub>3</sub>Al<sub>2</sub>O<sub>6</sub>:CaO composite maintains a high rate of calcium diglyceroxide formation for longer than CaO, although the initial formation rates and reaction kinetics are similar. Overall this specialised in-situ set-up has been shown to be suitable to monitor the phase evolution of heterogeneous crystalline catalysts during the triglycerides transesterification reaction, offering the opportunity to correlate the crystalline phases to activity, deactivation and stability.