A New Approach to Determine Gas Diffusion Coefficients in Porous Solids by EIS: Application for NH3 and CO2 Adsorption on Zirconia and Zeolite Type 5A
A new theoretical approach has been established to define transport coefficients of charge and mass transport in porous materials directly from impedance data; thus four transport coefficients could be determined. In case of ammonia adsorption on sulfated zirconia, the diffusion coefficient was figu...
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Wiley
2018-01-01
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| Series: | Advances in Mathematical Physics |
| Online Access: | http://dx.doi.org/10.1155/2018/5462659 |
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| author | Tien-Quang Nguyen Maja Glorius Cornelia Breitkopf |
| author_facet | Tien-Quang Nguyen Maja Glorius Cornelia Breitkopf |
| author_sort | Tien-Quang Nguyen |
| collection | DOAJ |
| description | A new theoretical approach has been established to define transport coefficients of charge and mass transport in porous materials directly from impedance data; thus four transport coefficients could be determined. In case of ammonia adsorption on sulfated zirconia, the diffusion coefficient was figured out to be approximately the mobility diffusion coefficient of ammonium ions: 1.2 x 10-7 cm2/s. The transport of carbon dioxide was examined for samples of zeolite type 5A in different hydration states. By impedance spectroscopy measurements, the diffusion coefficient of water vapor at 373 K is estimated to be about 7 x 10-6 cm2/s. The influence of carbon dioxide adsorption on diffusion coefficients is studied based on two pellet types of zeolite 5A. The difference between polar and non-polar gas adsorption in porous solids is considered as changed characteristic of impedance. |
| format | Article |
| id | doaj-art-e847c5a94a1c464a94c50f93d7d85889 |
| institution | Kabale University |
| issn | 1687-9120 1687-9139 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
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| series | Advances in Mathematical Physics |
| spelling | doaj-art-e847c5a94a1c464a94c50f93d7d858892025-02-03T05:47:55ZengWileyAdvances in Mathematical Physics1687-91201687-91392018-01-01201810.1155/2018/54626595462659A New Approach to Determine Gas Diffusion Coefficients in Porous Solids by EIS: Application for NH3 and CO2 Adsorption on Zirconia and Zeolite Type 5ATien-Quang Nguyen0Maja Glorius1Cornelia Breitkopf2Chair of Technical Thermodynamics, Faculty of Mechanical Science and Engineering, Technical University of Dresden, Helmholtzstr. 14, Dresden 01069, GermanyChair of Technical Thermodynamics, Faculty of Mechanical Science and Engineering, Technical University of Dresden, Helmholtzstr. 14, Dresden 01069, GermanyChair of Technical Thermodynamics, Faculty of Mechanical Science and Engineering, Technical University of Dresden, Helmholtzstr. 14, Dresden 01069, GermanyA new theoretical approach has been established to define transport coefficients of charge and mass transport in porous materials directly from impedance data; thus four transport coefficients could be determined. In case of ammonia adsorption on sulfated zirconia, the diffusion coefficient was figured out to be approximately the mobility diffusion coefficient of ammonium ions: 1.2 x 10-7 cm2/s. The transport of carbon dioxide was examined for samples of zeolite type 5A in different hydration states. By impedance spectroscopy measurements, the diffusion coefficient of water vapor at 373 K is estimated to be about 7 x 10-6 cm2/s. The influence of carbon dioxide adsorption on diffusion coefficients is studied based on two pellet types of zeolite 5A. The difference between polar and non-polar gas adsorption in porous solids is considered as changed characteristic of impedance.http://dx.doi.org/10.1155/2018/5462659 |
| spellingShingle | Tien-Quang Nguyen Maja Glorius Cornelia Breitkopf A New Approach to Determine Gas Diffusion Coefficients in Porous Solids by EIS: Application for NH3 and CO2 Adsorption on Zirconia and Zeolite Type 5A Advances in Mathematical Physics |
| title | A New Approach to Determine Gas Diffusion Coefficients in Porous Solids by EIS: Application for NH3 and CO2 Adsorption on Zirconia and Zeolite Type 5A |
| title_full | A New Approach to Determine Gas Diffusion Coefficients in Porous Solids by EIS: Application for NH3 and CO2 Adsorption on Zirconia and Zeolite Type 5A |
| title_fullStr | A New Approach to Determine Gas Diffusion Coefficients in Porous Solids by EIS: Application for NH3 and CO2 Adsorption on Zirconia and Zeolite Type 5A |
| title_full_unstemmed | A New Approach to Determine Gas Diffusion Coefficients in Porous Solids by EIS: Application for NH3 and CO2 Adsorption on Zirconia and Zeolite Type 5A |
| title_short | A New Approach to Determine Gas Diffusion Coefficients in Porous Solids by EIS: Application for NH3 and CO2 Adsorption on Zirconia and Zeolite Type 5A |
| title_sort | new approach to determine gas diffusion coefficients in porous solids by eis application for nh3 and co2 adsorption on zirconia and zeolite type 5a |
| url | http://dx.doi.org/10.1155/2018/5462659 |
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