Diffusion through single porous particle studied in a microfluidic system

Luca Carnevale*, Rafael M. Gonzalez, Florian Meirer, Wouter Olthuis, Bert M. Weckhuysen, Albert van den Berg

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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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.
Original languageEnglish
Title of host publication25th International Conference on Miniaturized Systems for Chemistry and Life Sciences
Subtitle of host publication10 - 14 October 2021, Palm Springs, CA, USA
Pages1223-1224
Publication statusPublished - 11 Oct 2021
Event25th International Conference on Miniaturized Systems for Chemistry and Life Sciences, µTAS 2021 - Palm Springs, United States
Duration: 10 Oct 202114 Oct 2021
Conference number: 25
https://microtas2021.org/

Conference

Conference25th International Conference on Miniaturized Systems for Chemistry and Life Sciences, µTAS 2021
Abbreviated titleMicroTAS 2021
Country/TerritoryUnited States
CityPalm Springs
Period10/10/2114/10/21
Internet address

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