A Study on the Preparation and Gas Permeation of Porous Alumina Supports

Ting Chia Huang; Huey Ing Chen

doi:10.1080/01496399508013901

A Study on the Preparation and Gas Permeation of Porous Alumina Supports

Ting Chia Huang, Huey Ing Chen

Department of Chemical Engineering

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

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	https://doi.org/10.1080/01496399508013901
Publication status	Published - 1995 Jan 1

All Science Journal Classification (ASJC) codes

Chemistry(all)
Chemical Engineering(all)
Process Chemistry and Technology
Filtration and Separation

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10.1080/01496399508013901

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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.",

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A Study on the Preparation and Gas Permeation of Porous Alumina Supports

Abstract

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