Disputation
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.
Order the Dissertation as PDF from this email address with the name of the Candidate: a.c.gartner@kjemi.uio.no
Trial lecture
8th. of May 10:15 AM, Zoom
"State-of-the-art in high-throughput experimentation for catalyst synthesis and evaluation"
Conferral summary
I denne avhandlingen har platina-innholdene metall-organiske rammeverk blitt undersøkt som katalysator for foredling av CO2 gjennom hydrogenering. Effektiv foredling av CO2 til metanol kan blant annet bidra til å løse utfordringer innenfor energilagring og transport i et bærekraftig samfunn. Dette arbeidet har gitt innsikt i mekanismen til reaksjonen mellom CO2 og hydrogen, og i sammenhengen mellom katalysatorens egenskaper og dens ytelse.
Turning CO2 into value
Hydrogenation of CO2 is receiving attention as a sustainable way of producing value-added products that are today produced from fossil fuels. The overall aim of this thesis has been to gain fundamental insights into the reaction between CO2 and H2 using a catalyst consisting of platinum nanoparticles inside a UiO-67 metal-organic framework (MOF). Metal-organic frameworks is a class of highly porous inorganic-organic hybrid materials and are attractive as catalysts much due to their potential in controlled design at the molecular level. MOFs are typically regarded as unstable under the reaction conditions needed for the CO2 hydrogenation reaction. However, in this work, the structural and catalytic stability of the catalyst were assessed after treatments under various reaction conditions and was found to be largely unaffected. CO is the main product of reaction but substantial amounts of methanol under favorable conditions of low temperatures and elevated pressures. Through catalyst performance tests coupled to parallel infrared spectroscopy measurements, we found that the product distribution is affected by the properties of the interface between the platinum nanoparticles and the metal-organic framework. In total, the thesis work provides insights into the reaction mechanism and the role of the metal-organic framework in the reaction.