Amine-functionalized metal-organic frameworks for direct air capturing of Carbon dioxide
Main funder
Funds granted by main funder (€)
- 20 000,00
Funding program
Project timetable
Project start date: 01/07/2020
Project end date: 30/06/2021
Summary
Humankind is already experiencing the consequences of global mean surface temperature increase through extreme weather events, rising sea level, dying coral reefs, diminishing Arctic ice area, and other disastrous effects. Still, global warming is likely to reach 1.5 °C between 2030 and 2052 if it continues to increase at a current rate. To limit global warming to 1.5 °C, the energy system has to be decarbonized to reach zero greenhouse gas (GHG) emissions, and carbon dioxide removal (CDR) of about 100 – 1000 Gt CO2 must be employed over the 21st century. Direct air capture (DAC) of CO2 is one of the CDR technologies that has a potential of removing 0.5 – 5 Gt CO2 yearly in 2050 at a cost range of 100 – 300 USD per tonne of CO2 or less, clearly placing DAC as a core technology for 21st-century challenges. DAC is a key technology for decarbonizing the energy system, in particular for synthetic fuels and chemicals, and for CDR. Today, it is also widely recognized that both flue gas and DAC approaches are not alternatives to each other but necessary in indispensable manner. Project aims to develop an adsorbent-coated extended heat transfer surface (henceforth intensified sorbent) that is based on amine functionalized three-dimensional metal-organic frameworks (MOFs). The novelty in the project is in the framework design of new functionalized-MOFs, wherein the bridging ligands of the framework will be functionalized by amino groups. Amino groups can act as selective capture site for CO2 via chemical reaction to carbamate. Furthermore, by including auxiliary halogen or hydrogen bond donor-acceptor moieties, such as pyridines into the MOF linkers, dynamic “breathing” MOFs that are able to respond to external chemical and physical stimuli by reversible change in their topological properties can be developed. Implemented chemical selectivity along with dynamic responsiveness allow more selective extraction of CO2 due the adaptive structural changes of the pore volume inducing additional size selectivity along with chemical affinity.
