Temperature-dependent complex dielectric permittivity: a simple measurement strategy for liquid-phase samples.

ABSTRACT: Microwaves (MWs) are an emerging technology for intensified and electrified chemical manufacturing. MW heating is intimately linked to a material's dielectric permittivity. These properties are highly dependent on temperature and pressure, but such datasets are not readily available due to the limited accessibility of the current methodologies to process-oriented laboratories. We introduce a simple, benchtop approach for producing these datasets near the 2.45 GHz industrial, medical, and scientific (ISM) frequency for liquid samples. By building upon a previously-demonstrated bireentrant microwave measurement cavity, we introduce larger pressure- and temperature-capable vials to deduce temperature-dependent permittivity quickly and accurately for vapor pressures up to 7 bar. Our methodolog

SUBMITTER: Baker-Fales M 

PROVIDER: S-EPMC10597996 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature