W imieniu Polskiego Towarzystwa Chemicznego o/Katowice zapraszamy na wykład Dr. Craig Brown pt. „Neutron Scattering to Characterize Adsorbents and Their Hosts”
Kiedy? 24 marca 2023 r. godz. 13.00
Gdzie: Katowice ul. Bankowa 14 sala nr 213 (Aula Kopernika)
O wykładowcy: Dr. Craig Brown
U. Delaware Chemical Engineering & Team Lead, Structure & Dynamics of Materials
Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
O wykładzie: Neutron Scattering to Characterize Adsorbents and Their Hosts
Adsorption of molecules in functionalized and high surface area metal-organic frameworks (MOFs) is of emergent technological importance in a multitude of areas ranging from chemical separations to energy storage. We have been studying the properties of MOFs and other porous materials for storage and separations of industrially important small molecules such as hydrogen, oxygen, carbon dioxide, noble gases, and short chain organics. Besides the geometrical and porosity control available in MOF chemistry, the properties of the frameworks can be tweaked to elevate electrostatic interactions by exposing open metal cation sites or through enhanced van der Waals contacts via functionalizing ligands and introducing flexibility. We will highlight some of the most recent results on optimized interactions of hydrogen with open metal sites to obtain room temperature adsorption and a range of dynamic frameworks pore binding in MOF-like materials that optimize hydrogen-bonding for adsorption using close-contacts. The potential utility for MOFs in other energy-efficient chemical separations and carbon-capture technologies will be discussed. These results illustrate the governing characteristics of these material properties and the interactions with the guest molecules.