A5055411627- Zeolite Catalysis and Synthesis
- Advanced NMR Techniques and Applications
- Covalent Organic Framework Applications
- Atomic and Subatomic Physics Research
- Various Chemistry Research Topics
University of Aveiro
2021-2023
Adsorption isotherms obtained through volumetric measurements are widely used to estimate the gas adsorption performance of porous materials. Nonetheless, there is always ambiguity regarding contributions chemi- and physisorption processes overall retained volume. In this work, we propose, for first time, use solid-state NMR (ssNMR) generate CO2 adsorbed onto an amine-modified silica sorbent. This method enables separation six individual physisorbed components, a feat only possible using...
Although spectroscopic investigation of surface chemisorbed CO2 species has been the focus most studies, identifying different domains weakly interacting (physisorbed) molecules in confined spaces is less trivial as they are often indistinguishable resorting to (isotropic) NMR chemical shift or vibrational band analyses. Herein, we undertake for first time a thorough solid-state analysis physisorbed prior and after amine-functionalization silica surfaces; combining 13C anisotropy (CSA)...