693.932 PEOPLE
| 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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Andreasen, Jens Wenzel
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (55/55 displayed)
- 2024Perpendicular crossing chains enable high mobility in a noncrystalline conjugated polymercitations
- 2023Remarkable conductivity enhancement in P-doped polythiophenes via rational engineering of polymer-dopant interactionscitations
- 2022Macroscopic mapping of microscale fibers in freeform injection molded fiber-reinforced composites using X-ray scattering tensor tomographycitations
- 2022Enabling roll-processed and flexible Organic Solar Cells based on PffBT4T through temperature-controlled slot-die coating.citations
- 2021Lifetime Study of Organic Solar Cells with O-IDTBR as Non-Fullerene Acceptorcitations
- 2020Scalable fabrication of organic solar cells based on non-fullerene acceptorscitations
- 2020Scalable fabrication of organic solar cells based on non-fullerene acceptorscitations
- 2018Towards Molecular Dynamics Modelling of Mesoscale Bulk Heterojunction Morphologies
- 2017High throughput in situ scattering of roll-to-roll coated functional polymer films
- 2017Unique Crystal Orientation of Poly(ethylene oxide) Thin Films by Crystallization Using a Thermal Gradientcitations
- 2017Combined Scattering and Fluorescence Mapping of Kesterite Precursors at the NanoMAX Beamline
- 2017Mechanical properties of biaxially strained poly(L-lactide) tubes: Strain rate and temperature dependencecitations
- 2017First Combined Scattering and Fluorescence Scanning Transmission Microscopy at the NanoMAX Beam Line at MAX IV
- 2016Novel micro-reactor flow cell for investigation of model catalysts using in situ grazing-incidence X-ray scatteringcitations
- 2016Elucidating Batch-to-Batch Variation Caused by Homocoupled Side Products in Solution-Processable Organic Solar Cellscitations
- 2016Elucidating Batch-to-Batch Variation Caused by Homocoupled Side Products in Solution-Processable Organic Solar Cellscitations
- 2016In situ X-ray scattering of perovskite solar cell active layers roll-to-roll coated on flexible substratescitations
- 2016In situ X-ray scattering of perovskite solar cell active layers roll-to-roll coated on flexible substratescitations
- 2016Characterization Of Biaxial Strain Of Poly(L-Lactide) Tubescitations
- 2015Significant Electronic Thermal Transport in the Conducting Polymer Poly(3,4‐ethylenedioxythiophene)citations
- 2015Quantitative 3D X-ray imaging of densification, delamination and fracture in a micro-composite under compressioncitations
- 2015Quantitative 3D X-ray imaging of densification, delamination and fracture in a micro-composite under compressioncitations
- 2014Structural instability and electrical properties in epitaxial Er 2 O 3 -stabilized Bi 2 O 3 thin filmscitations
- 2014Morphology Changes of Co Catalyst Nanoparticles at the Onset of Fischer-Tropsch Synthesiscitations
- 2014In situ monitoring of structure formation in the active layer of polymer solar cells during roll-to-roll coatingcitations
- 2014Semi-metallic polymerscitations
- 2014Structure–property relationships of oligothiophene–isoindigo polymers for efficient bulk-heterojunction solar cellscitations
- 2014Structural instability and electrical properties in epitaxial Er2O3-stabilized Bi2O3 thin filmscitations
- 2012High-throughput roll-to-roll X-ray characterization of polymer solar cell active layerscitations
- 2012Dynamical Properties of a Ru/MgAl2O4 Catalyst during Reduction and Dry Methane Reformingcitations
- 2012Simultaneous multilayer formation of the polymer solar cell stack using roll-to-roll double slot-die coating from watercitations
- 2012Simultaneous multilayer formation of the polymer solar cell stack using roll-to-roll double slot-die coating from watercitations
- 2011Aqueous Processing of Low-Band-Gap Polymer Solar Cells Using Roll-to-Roll Methodscitations
- 2011Aqueous Processing of Low-Band-Gap Polymer Solar Cells Using Roll-to-Roll Methodscitations
- 2011Generation of native polythiophene/PCBM composite nanoparticles via the combination of ultrasonic micronization of droplets and thermocleaving from aqueous dispersioncitations
- 2011Generation of native polythiophene/PCBM composite nanoparticles via the combination of ultrasonic micronization of droplets and thermocleaving from aqueous dispersioncitations
- 2011Thermally reactive Thiazolo[5,4-d]thiazole based copolymers for high photochemical stability in polymer solar cellscitations
- 2011Thermally reactive Thiazolo[5,4-d]thiazole based copolymers for high photochemical stability in polymer solar cellscitations
- 2011Roll-to-Roll Processing of Inverted Polymer Solar Cells using Hydrated Vanadium(V)Oxide as a PEDOT:PSS Replacementcitations
- 2010Combined in situ small and wide angle X-ray scattering studies of TiO2 nano-particle annealing to 1023 Kcitations
- 2009Biaxially Oriented CdSe Nanorodcitations
- 2009Crystallization in diblock copolymer thin films at different degrees of supercoolingcitations
- 2008Organic thin film transistors with polymer brush gate dielectrics synthesized by atom transfer radical polymerizationcitations
- 2008A simple nanostructured polymer/ZnO hybrid solar cell - preparation and operation in aircitations
- 2007Influence of 1,2-PB matrix cross-linking on structure and properties of selectively etched 1,2-PB-b-PDMS block copolymerscitations
- 2007Nanoscale structural characterization of Mg(NH 3 ) 6 Cl 2 during NH 3 desorption:An in situ small angle X-ray scattering studycitations
- 2007Nanoscale structural characterization of Mg(NH3)6Cl2 during NH3 desorptioncitations
- 2006Enhancement of charge-transport characteristics in polymeric films using polymer brushescitations
- 2006Molecular-weight dependence of interchain polaron delocalization and exciton bandwidth in high-mobility conjugated polymerscitations
- 2006Designing solution-processable air-stable liquid crystalline crosslinkable semiconductorscitations
- 2006Activation of a Cu/ZnO catalyst for methanol synthesiscitations
- 2006Oxygen release and exchange in niobium oxide MEHPPV hybrid solar cellscitations
- 2005Effects of packing structure on the optoelectronic and charge transport properties in poly(9,9-di-n-octylfluorene-alt-benzothiadiazole)citations
- 2005Effects of Packing Structure on the Optoelectronic and Charge Transport Properties in Poly(9,9-di- n -octylfluorene- alt -benzothiadiazole)citations
- 2003An in situ cell for small-angle scattering experiments on nano-structured catalystscitations
Places of action
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article
Morphology Changes of Co Catalyst Nanoparticles at the Onset of Fischer-Tropsch Synthesis
Abstract
Cobalt nanoparticles play an important role as catalysts for the Fischer-Tropsch synthesis, which is an attractive route for production of synthetic fuels. It is of particular interest to understand the varying conversion rate during the first hours after introducing synthesis gas (H-2 and CO) to the system. To this end, several in situ characterization studies have previously been done on both idealized model systems and commercially relevant catalyst nanoparticles, using bulk techniques, such as X-ray powder diffraction and X-ray absorption spectroscopy. Since catalysis takes place at the surface of the cobalt particles, it is important to develop methods to gain surface-specific structural information under realistic processing conditions. We addressed this challenge using small-angle X-ray scattering (SAXS), a technique exploiting the penetrating nature of X-rays to provide information about particle morphology during in situ experiments. Simultaneous wide-angle X-ray scattering was used for monitoring the reduction from oxide to catalytically active metal cobalt, and anomalous SAXS was used for distinguishing the cobalt particles from the other phases present. After introducing the synthesis gas, we found that the slope of the scattered intensity in the Porod region increased significantly, while the scattering invariant remained essentially constant, indicating a change in the shape or surface structure of the particles. Shape- and surface change models are discussed in light of the experimental results, leading to an improved understanding of catalytic nanoparticles.