Abstract
The preparation and gas permeation of porous alumina supports were studied. The influences of the amount of PVA on the properties of the alumina slips, microstructure of the supports, and gas permeation were investigated. The experimental results show that the addition of PVA in the preparation process is useful for controlling the porosity of the supports without significantly changing other microstructural properties. Permeation measurements of H2, He, CH4, N2, O2, and CO2 showed that gas transport through various supports under low transmembrane pressures (100–220 kPa) at room temperature (26.5°C) was in the transition region, which combined the Knudsen diffusion and Poiseuille flow. The average radii of active pores for the supports, calculated from the gas permeability method, were compared with those measured by mercury porosimetry. The porosity-tortu-osity factors and the tortuosity factors of the supports were also estimated and are discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 2189-2209 |
| Number of pages | 21 |
| Journal | Separation Science and Technology |
| Volume | 30 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 1995 Jan 1 |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Chemical Engineering(all)
- Process Chemistry and Technology
- Filtration and Separation
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A Study on the Preparation and Gas Permeation of Porous Alumina Supports. / Huang, Ting Chia; Chen, Huey-Ing.
In: Separation Science and Technology, Vol. 30, No. 10, 01.01.1995, p. 2189-2209.Research output: Contribution to journal › Article
TY - JOUR
T1 - A Study on the Preparation and Gas Permeation of Porous Alumina Supports
AU - Huang, Ting Chia
AU - Chen, Huey-Ing
PY - 1995/1/1
Y1 - 1995/1/1
N2 - The preparation and gas permeation of porous alumina supports were studied. The influences of the amount of PVA on the properties of the alumina slips, microstructure of the supports, and gas permeation were investigated. The experimental results show that the addition of PVA in the preparation process is useful for controlling the porosity of the supports without significantly changing other microstructural properties. Permeation measurements of H2, He, CH4, N2, O2, and CO2 showed that gas transport through various supports under low transmembrane pressures (100–220 kPa) at room temperature (26.5°C) was in the transition region, which combined the Knudsen diffusion and Poiseuille flow. The average radii of active pores for the supports, calculated from the gas permeability method, were compared with those measured by mercury porosimetry. The porosity-tortu-osity factors and the tortuosity factors of the supports were also estimated and are discussed.
AB - The preparation and gas permeation of porous alumina supports were studied. The influences of the amount of PVA on the properties of the alumina slips, microstructure of the supports, and gas permeation were investigated. The experimental results show that the addition of PVA in the preparation process is useful for controlling the porosity of the supports without significantly changing other microstructural properties. Permeation measurements of H2, He, CH4, N2, O2, and CO2 showed that gas transport through various supports under low transmembrane pressures (100–220 kPa) at room temperature (26.5°C) was in the transition region, which combined the Knudsen diffusion and Poiseuille flow. The average radii of active pores for the supports, calculated from the gas permeability method, were compared with those measured by mercury porosimetry. The porosity-tortu-osity factors and the tortuosity factors of the supports were also estimated and are discussed.
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UR - http://www.scopus.com/inward/citedby.url?scp=0000069168&partnerID=8YFLogxK
U2 - 10.1080/01496399508013901
DO - 10.1080/01496399508013901
M3 - Article
VL - 30
SP - 2189
EP - 2209
JO - Separation Science and Technology
JF - Separation Science and Technology
SN - 0149-6395
IS - 10
ER -