A New Method for the Measurement of the Diffusion Coefficient of Adsorbed Vapors in Thin Zeolite Films, Based on Magnetoelastic Sensors.
FAU
LTA
diffusion coefficient
magnetoelastic
sensors
zeolite
Journal
Sensors (Basel, Switzerland)
ISSN: 1424-8220
Titre abrégé: Sensors (Basel)
Pays: Switzerland
ID NLM: 101204366
Informations de publication
Date de publication:
07 Jun 2020
07 Jun 2020
Historique:
received:
21
05
2020
revised:
01
06
2020
accepted:
05
06
2020
entrez:
11
6
2020
pubmed:
11
6
2020
medline:
11
6
2020
Statut:
epublish
Résumé
In the current work an experimental method is used in order to calculate the diffusivity D (diffusion coefficient) of various vapors in thin zeolite films. The method is based on adsorption data from magnetoelastic sensors on top of which a zeolite layer was synthesized, and the diffusivity is extracted by fitting the data to Fick's laws of diffusion. In particular, the method is demonstrated for two volatile organic compound (VOC) vapors on two different zeolites, the p-Xylene adsorption in Faujasite type zeolite with D=1.89×10-13 m2/s at 120 °C and the propene adsorption in Linde Type A type zeolite with D=5.9×10-14 m2/s at 80 °C, two diffusion coefficients which are extracted experimentally for first time. Our results are within the order of magnitude of other VOC/zeolite values reported in literature.
Identifiants
pubmed: 32517344
pii: s20113251
doi: 10.3390/s20113251
pmc: PMC7309032
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : Andreas Mentzelopoulos Scholarships for the University of Patras
ID : Andreas Mentzelopoulos Scholarships for the University of Patras
Déclaration de conflit d'intérêts
The authors declare no conflict of interest.
Références
Anal Chem. 2002 Jul 1;74(13):3084-95
pubmed: 12141668
Materials (Basel). 2019 Apr 07;12(7):
pubmed: 30959981
Dalton Trans. 2019 Sep 14;48(34):12839-12849
pubmed: 31334728