| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Tian, Mi
University of Exeter
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2024Investigation of the Dynamic Behaviour of H 2 and D 2 in a Kinetic Quantum Sieving Systemcitations
- 2024Investigation of the Dynamic Behaviour of H 2 and D 2 in a Kinetic Quantum Sieving Systemcitations
- 2022Manipulation of the crystalline phase diagram of hydrogen through nanoscale confinement effects in porous carbonscitations
- 2022Manipulation of the crystalline phase diagram of hydrogen through nanoscale confinement effects in porous carbonscitations
- 2021Solvent sorption-induced actuation of composites based on a polymer of intrinsic microporositycitations
- 2021Solvent Sorption-Induced Actuation of Composites Based on a Polymer of Intrinsic Microporositycitations
- 2018Enhanced adsorption of cationic and anionic dyes from aqueous solutions by polyacid doped polyanilinecitations
- 2018Enhanced adsorption of cationic and anionic dyes from aqueous solutions by polyacid doped polyanilinecitations
Places of action
| Organizations | Location | People |
|---|
article
Investigation of the Dynamic Behaviour of H 2 and D 2 in a Kinetic Quantum Sieving System
Abstract
Porous organic cages (POCs) are nanoporous materials composed of discrete molecular units that have uniformly distributed functional pores. The intrinsic porosity of these structures can be tuned accurately at the nanoscale by altering the size of the porous molecules, particularly to an optimal size of 3.6 Å, to harness the kinetic quantum sieving effect. Previous research on POCs for isotope separation has predominantly centered on differences in the quantities of adsorbed isotopes. However, nuclear quantum effects also contribute significantly to the dynamics of the sorption process, offering additional opportunities for separating H2 and D2 at practical operational temperatures. In this study, our investigations into H2 and D2 sorption on POC samples revealed a higher uptake of D2 compared to that of H2 under identical conditions. We employed quasi-elastic neutron scattering to study the diffusion processes of D2 and H2 in the POCs across various temperature and pressure ranges. Additionally, neutron Compton scattering was utilized to measure the values of the nuclear zero-point energy of individual isotopic species in D2 and H2. The results indicate that the diffusion coefficient of D2 is approximately one-sixth that of H2 in the POC due to the nuclear quantum effect. Furthermore, the results reveal that at 77 K, D2 has longer residence times compared to H2 when moving from pore to pore. Consequently, using the kinetic difference of H2 and D2 in a porous POC system enables hydrogen isotope separation using a temperature or pressure swing system at around liquid nitrogen temperatures.