Rare earth metal separation with new amide functionalised ionic liquids: understanding species and selectivity

Recycling rare-earth metals from end-of-life products such as hard-drive magnets is of critical importance particularly in the face of growing demand for consumer goods and other applications. Liquid-liquid extraction is the preferred method of separation utilising organic extractants owing to their scalability and commercial potential. The use of volatile diluents is a major safety concern in these large separation processes. Task-specific ionic liquids have been developed in response, benefiting from their negligible vapour pressure offering an alternative for liquid-liquid rare-earth metal separation.<br/><br/>The work presented in this thesis aimed to develop the multifunctional amide ionic liquid, [MAIL][NTf2], for extraction of rare-earth metals from waste magnet feeds, specifically separation of dysprosium(III) and neodymium(III). In addition to designing and synthesising new generations of extractants with the hope of developing superior extractants.<br/>

Name dc:type.qualificationname

Doctor of Philosophy

Level dc:type.qualificationlevel

Doctoral Thesis

Grantor dc:publisher.institution

Queen's University Belfast

Year dc:date.issued

2022

Author dc:creator

• Carroll, Ciaran

Advisors dc:contributor.advisor

• Nockemann, Peter
• Holbrey, John

• Ionic liquids
• rare-earth metals
• lanthanides

Language dc:language

eng

Identifier

oai:pure.qub.ac.uk/portal:studenttheses/8ec30ce9-7017-45b5-a3a1-cb6c3faa42a1

OAI identifier oai:identifier

oai:pure.qub.ac.uk/portal:studenttheses/8ec30ce9-7017-45b5-a3a1-cb6c3faa42a1