DIFFUSION THROUGH SINGLE POROUS PARTICLES STUDIED IN A MICROFLUIDIC SYSTEM
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Publication date
2021
Authors
Carnevale, Luca
Gonzalez, Rafael M.
Meirer, F.
Olthuis, Wouter
Weckhuysen, Bert
van den Berg, Albert
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Part of book
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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.
Keywords
closed valve, Effective diffusion, epoxy resin, FCC catalyst, Single-particle, SiO particle, Bioengineering, Chemical Engineering (miscellaneous)
Citation
Carnevale, L, Gonzalez, R M, Meirer, F, Olthuis, W, Weckhuysen, B M & van den Berg, A 2021, DIFFUSION THROUGH SINGLE POROUS PARTICLES STUDIED IN A MICROFLUIDIC SYSTEM. in MicroTAS 2021 - 25th International Conference on Miniaturized Systems for Chemistry and Life Sciences. MicroTAS 2021 - 25th International Conference on Miniaturized Systems for Chemistry and Life Sciences, Chemical and Biological Microsystems Society, pp. 1223-1224, 25th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2021, Palm Springs, Virtual, United States, 10/10/21., conference