Towards the application of large mordenite particles as Positron Emission Particle Tracking tracers

Research output: Contribution to journalArticlepeer-review


Colleges, School and Institutes


In this study, we report developments towards the application of large zeolite particles, with diameter ca. 40 μm, as tracers in Positron Emission Particle Tracking (PEPT) imaging using 68 Ga. The influence of intrapore Na + and TEA + (tetraethylammonium) cation concentrations and framework Si/Al ratio on the morphology of mordenite particles has been investigated, advancing understanding of the relationship between these factors. Moreover, the influence of ethanol concentration in the gel during aging on intrapore cation concentration, Si/Al ratio and particle morphology has also been investigated. Additionally, facile ion-exchange between aqueous Ga3+ and intrapore H + in mordenite has been demonstrated. The influence of pH and gallium speciation on ion-exchange has been investigated to determine favourable conditions for 68 Ga 3+ uptake by the zeolite.


Original languageEnglish
Pages (from-to)21-26
Number of pages6
JournalMRS Advances
Issue number1
Early online date11 Dec 2018
Publication statusPublished - 1 Jan 2019


  • Ga, hydrothermal, ion-exchange material, zeolite