The synthesis, design and study of new Type 3 porous liquids

  • John Cahir

Student thesis: Doctoral ThesisDoctor of Philosophy


This thesis details the synthesis of over 100 new Type 3 porous liquids based on a broad range of microporous solids dispersed in electrically neutral solvents. These new porous liquids were successfully characterised and their physical properties including viscosity, density, disperision stability and their gas uptake capabilities explored. A particular porous liquid was highlighted as a potential drop in replacement for the upgrading of biogas to biomethane and further studies were carried out on this new porous liquid where it was found to perform over three times better than the current industrial scrubber in the upgrading of biogas. This thesis also discusses some interesting MOF based chemistry where the use of mechanochemistry allowed for the formation of defects which led to the MOFs having increased gas capacity and selectivity. The process of drug inclusion in MOFs were also investigated and the effects of using a size excluded solvent in the loading process cf. a standard wetting solvent was found to approximately double the amount of drug being loaded into the MOF. Lastly, new materials in the form of liquids with high compressibility were proposed and studied. These liquids exhibit high compressibility and the reasons for the compressibility along with investigating some surrounding factors were explored.
Date of AwardJul 2021
Original languageEnglish
Awarding Institution
  • Queen's University Belfast
SupervisorStuart James (Supervisor) & Johan Jacquemin (Supervisor)


  • Porous liquids
  • MOFs
  • holey liquids
  • zeolites
  • biogas upgrading
  • compressible liquids

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