Disputation: Gurpreet Kaur
Msc. Gurpreet Kaur at the Department of Chemistry, Faculty of Mathematics and Natural Sciences, is defending the thesis «Optimization of UiO-67 type Metal-Organic Frameworks for Catalysis» for the degree of Philosophiae Doctor.
The University of Oslo is closed at the moment due to the Corona Pandemic. The Disputation will therefore be live streamed using Zoom.
The Chair of Defense will lead the Disputation and the Defense technician will solve technical issues.
Ex auditorio questions: The Chair of Defense will invite the audience to ex auditorio questions. These can be asked orally, by clicking "Participants - Raise hand" in the Zoom menu. The Zoom-host will grant you to speak in the meeting.
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Title: "Ion-absorption, exchange and separation in zeolites and MOFs a comparative study"
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I avhandlingen min har jeg forsøkt å svare på fundamentale spørsmål angående det zirkoniumbaserte metallorganiske rammeverket UiO-67. Dets syntese og fundamentale egenskaper har blitt grundig undersøkt for å få en innsikt i hvordan man best kan utvikle nye katalysatorer for viktige reaksjoner som CO2-hydrogenering og oligomerisering av eten.
Materials with pores of controlled size and connectivity are of fundamental importance in chemical industry and research. The pores in microporous materials, which have the same dimensions as individual molecules, can be used for the immobilisation of active sites to develop these materials into catalysts. Zeolites and metal-organic frameworks (MOFs) are two such widely studied materials in this aspect.
The main objective of my work has been to synthesize MOFs with specific catalytically active sites. As basis of the study, the Zr-biphenyl MOF UiO-67 was chosen, due to its high stability and demonstrated abilities to harbor a wide range of catalytic sites. UiO MOFs (Universitetet i Oslo) were discovered at the Department of Chemistry in 2008 and is now prominent in the MOF literature but its synthesis and fundamental properties has been poorly understood. Therefore, it is necessary to develop a deep understanding to control the properties of the materials by atomic scale manipulation. In this thesis a thorough study is done to refine, understand the synthesis and its effects for a stable, reproducible and reliable development of a desired material. Furthermore, the optimized protocols were implemented to develop UiO-67 type catalysts by anchoring different metals in the pores to serve as active sites. This work has helped to have a better understanding of MOF catalysts for important reactions such as CO2 hydrogenation and ethene oligomerization.