Characterization of a convection‐based support microstructure through a flow resistance parameter

Modern convection‐based supports differ substantially in pore size, porosity, and microstructure topology. Due to such variability, it is challenging to evaluate the contribution of a particular microstructure topology on flow resistance. We demonstrated that the flow resistance parameter (ϕ$\phi $)...

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Bibliographic Details
Published in:Journal of separation science 2022-06, Vol.45 (12), p.1984-1996
Main Author: Podgornik, Aleš
Format: Article
Language:English
Subjects:
Convection
convection‐based support
Flow resistance
flow resistance parameter
Liquid Chromatography
Microstructure
Parameters
Pore size
Porosity
Pressure drop
Topology
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Summary:Modern convection‐based supports differ substantially in pore size, porosity, and microstructure topology. Due to such variability, it is challenging to evaluate the contribution of a particular microstructure topology on flow resistance. We demonstrated that the flow resistance parameter (ϕ$\phi $) introduced decades ago can be used as a criterion to evaluate the effect of microstructure topology on a pressure drop when the pore size is used as a characteristic support dimension. Furthermore, the ϕ$\phi $ value of simple cubic packing was calculated over the entire range of open porosity and compared to the ϕ$\phi $ values determined for pressure drop models derived for particular convection‐based supports and experimental values of various convection‐based supports from the literature. It was shown that different convection‐based supports become clustered into distinct groups when plotted according to their ϕ$\phi $ and open porosity values, allowing their discrimination.
ISSN:1615-9306
1615-9314
DOI:10.1002/jssc.202100955