A5027714932- Magnetic Properties of Alloys
- Hydrogen Storage and Materials
- Extraction and Separation Processes
- Advancements in Battery Materials
- Metallurgical and Alloy Processes
- Metal-Organic Frameworks: Synthesis and Applications
- Rare-earth and actinide compounds
- Ammonia Synthesis and Nitrogen Reduction
- Recycling and Waste Management Techniques
- Covalent Organic Framework Applications
- Hybrid Renewable Energy Systems
- Membrane Separation and Gas Transport
- Advanced Battery Materials and Technologies
- Metallic Glasses and Amorphous Alloys
- Advanced Battery Technologies Research
- Advanced Chemical Physics Studies
- Chemical Synthesis and Characterization
- Magnetic Properties and Applications
- Superconducting Materials and Applications
- Zeolite Catalysis and Synthesis
- Magnetic properties of thin films
- Nuclear Materials and Properties
- Metallurgy and Material Forming
- Geomagnetism and Paleomagnetism Studies
- Electric Motor Design and Analysis
University of Birmingham
2015-2024
The Faraday Institution
2019-2024
Engineering and Physical Sciences Research Council
2022
Institute of Metallurgy
2004-2021
Energy Institute
2019-2021
Rutherford Appleton Laboratory
2007
University of Oxford
2007
University of Glasgow
2007
University of Edinburgh
2006
National Microelectronics Institute
2006
Three structurally diverse polymers of intrinsic microporosity reversibly adsorb significant quantities hydrogen (1.4–1.7 % by mass at 77 K) and represent the first examples a new type purely organic storage material, which can be tailored to meet specific requirements physisorption. A major technical obstacle widespread use (H2) as nonpolluting fuel for cars is lack safe efficient system on-board storage.1 Of many potential solutions being investigated,2 an attractive possibility based on...
We report the synthesis and properties of network polymers intrinsic microporosity (network−PIMs) derived from triptycene monomers that possess alkyl groups attached to their bridgehead positions. Gas adsorption can be controlled by length branching chains so apparent BET surface area materials tuned within range 618−1760 m2 g−1. Shorter (e.g., methyl) or branched isopropyl) provide greatest microporosity, whereas longer appear block created rigid organic framework. The enhanced in...
Neodymium is one of the more critical rare earth elements with respect to current availability and most often used in high performance magnets. In this paper, we compare virgin production route these magnets two hypothetical recycling processes terms environmental impact. The first process looks at manual dismantling computer hard disk drives (HDDs) combined a novel hydrogen based process. second assumes HDDs are shredded. Our life cycle assessment both on up date literature our own...
A novel triptycene-based polymer of intrinsic microporosity (Trip-PIM) displays enhanced surface area (1065 m2 g(-1)) and reversibly adsorbs 1.65% hydrogen by mass at 1 bar/77 K 2.71% 10 K.
We demonstrate, through structural refinement from synchrotron X-ray diffraction data, that the mechanism of transformation between lithium amide and imide during hydrogen cycling in important Li−N−H storage system is a bulk reversible reaction occurs non-stoichiometric manner within cubic anti-fluorite-like structure.
The challenge of storing hydrogen at high volumetric and gravimetric density for automotive applications has prompted investigations into the potential cryo-adsorption on internal surface area microporous organic polymers. A range Polymers Intrinsic Microporosity (PIMs) been studied, best PIM to date (a network-PIM incorporating a triptycene subunit) taking up 2.7% H2 by mass 10 bar/77 K. HyperCrosslinked (HCPs) also show promising performance as storage materials, particularly pressures >10...
The rare earth metals have been identified by the European Union and United States as being at greatest supply risk of all materials for clean energy technologies. Of particular concern are neodymium dysprosium, both which employed in neodymium–iron–boron based magnets. Recycling magnets on these contained within obsolete electronic equipment, could provide an additional secure supply. In present work, hydrogen has a processing agent to decrepitate sintered hard disk drives into...
Quick on the uptake: Following its identification during a targeted search, intriguing crystal structure of 3,3',4,4'-tetra(trimethylsilylethynyl)biphenyl was investigated. Simple removal included solvent provides an organic with open microporous that has striking similarity to zeolite A (see picture). Reversible adsorption nitrogen and hydrogen gases at 77 K confirms microporosity is permanent.
Caging cages: Crystals of a metal-organic framework, MOF-123 [Zn7O2(NBD)5(DMF)2] have three-dimensional porous structure in which DMF ligands (see picture, pink) protrude into small channels. Removal these triggers the transformation this MOF to doubly interpenetrating form, MOF-246 [Zn7O2(NBD)5]. Moreover, addition reverse give MOF-123. NBD=2-nitrobenzene-1,4-dicarboxylate.
Structural adhesives are commonly used to join dissimilar materials and of particular interest in complex technological devices but their use makes recycling difficult.
Abstract Over the past 150 years, our ability to produce and transform engineered materials has been responsible for current high standards of living, especially in developed economies. However, we must carefully think effects addiction creating using at this fast rate will have on future generations. The way currently make use detrimentally affects planet Earth, many severe environmental problems. It next generations by putting danger economy, energy, climate. We are point where something...
A “toolbox” of processes is highlighted to recycle metals from energy storage and renewable devices.
We report the discovery of a new, chemical route for 'activating' hydrogen store MgH2, that results in highly effective uptake/release characteristics, comparable to those obtained from mechanically-milled material.
Porous materials adsorb H2 through physisorption, a process which typically has rather low enthalpy of adsorption (e.g. ca. 4 to 7 kJ mol(-1) for MOFs), thus requiring cryogenic temperatures hydrogen storage. In this paper, we consider some the issues associated with accurate characterisation properties microporous materials. We present comparative gravimetric sorption data over range different including an activated carbon, zeolite, two MOFs and organic polymer. Hydrogen isotherms were used...
Drei strukturell diverse Polymere mit intrinsischer Mikroporosität (PIMs) adsorbieren erhebliche Mengen Wasserstoff (1.4–1.7 Gew.-% bei 77 K). Sie bilden eine neue Klasse von organischen Wasserstoffspeichermaterialien, die an spezifische Anforderungen für Wasserstoffphysisorption angepasst werden können.
The hydrogenation disproportionation desorption recombination (HDDR) process has been investigated as a possible means of producing bonded magnets from used NdFeB-type sintered with compositions, Nd13.4Dy0.8Al0.7Nb0.3Fe78.5B6.3 and Nd12.5Dy1.8Al0.9Nb0.6Co5.0Fe72.8B6.4 (atomic%). It shown that by increasing the processing temperature, an increase in equilibrium pressure for overall reaction time was observed. magnetic properties lower Dy content magnet were affected significantly change...
The polymeric binder of bonded NdFeB magnets can be dissolved in ionic liquids with strongly coordinating anions and the magnetic powder reused for manufacturing new magnets.
Rare Earths (RE) permanent magnets are essential components for Europe's successful green and digital transition However, the entire value chain of RE magnetic materials depends on imports, which highly vulnerable in current global supply models. To mitigate this situation, EU Regulation plans that at least 15 % EU's annual consumption should be covered by recycling capacities 2030. Researchers H2020 project SUSMAGPRO consortium have shown hydrogen can used as a very efficient method to...
In the drive to reduce critical Heavy Rare Earth (HRE) content of magnets for green technologies, HRE-free Nd-Fe-B has become an attractive option. HRE is added enhance high temperature performance magnets. To produce similar properties without HRE, a crystallographically textured nanoscale grain structure ideal; and this conventionally requires expensive "die upset" processing routes. Here, Flash Spark Plasma Sintering (FSPS) process been applied Dy-free Nd30.0Fe61.8Co5.8Ga0.6Al0.1B0.9 melt...