Abstract
The understanding of diffusion through porous materials is a crucial aspect for designing superior catalysts.
Their performance is often influenced by inter-particle inhomogeneities, which are barely attainable with bulk analytical
methods. To overcome this problem, a microfluidic system has been designed and fabricated to perform a
mass transfer study at a single-particle level using fluorescence microscopy. This was done by trapping a porous
particle and applying a concentration gradient over it. The system allows us to obtain the true value of the diffusion
coefficient of a single particle, which is not averaged over many particles and influenced by inter-particle porosity.
The diffusion was studied for a Fluid Catalytic Cracking (FCC) and a porous SiO2 particle, the latter well-known
material used as a commercial support material.
Their performance is often influenced by inter-particle inhomogeneities, which are barely attainable with bulk analytical
methods. To overcome this problem, a microfluidic system has been designed and fabricated to perform a
mass transfer study at a single-particle level using fluorescence microscopy. This was done by trapping a porous
particle and applying a concentration gradient over it. The system allows us to obtain the true value of the diffusion
coefficient of a single particle, which is not averaged over many particles and influenced by inter-particle porosity.
The diffusion was studied for a Fluid Catalytic Cracking (FCC) and a porous SiO2 particle, the latter well-known
material used as a commercial support material.
| Original language | English |
|---|---|
| Title of host publication | 25th International Conference on Miniaturized Systems for Chemistry and Life Sciences |
| Subtitle of host publication | 10 - 14 October 2021, Palm Springs, CA, USA |
| Pages | 1223-1224 |
| Publication status | Published - 11 Oct 2021 |
| Event | 25th International Conference on Miniaturized Systems for Chemistry and Life Sciences, µTAS 2021 - Palm Springs, United States Duration: 10 Oct 2021 → 14 Oct 2021 Conference number: 25 https://microtas2021.org/ |
Conference
| Conference | 25th International Conference on Miniaturized Systems for Chemistry and Life Sciences, µTAS 2021 |
|---|---|
| Abbreviated title | MicroTAS 2021 |
| Country/Territory | United States |
| City | Palm Springs |
| Period | 10/10/21 → 14/10/21 |
| Internet address |