Photothermal Sorption of Gases in Porous Glass

Andriy Dmytruk, Tetsuro Jin, Hong Lin and Tetsuo Yazawa
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Andriy Dmytruk: Ecoglass Research Group, Special Division of Green Life Technology, National Institute of Advanced Industrial Science and Technology, AIST Kansai, 1-8-31 Midorigaoka Ikeda, Osaka 563-8577, Japan
Tetsuro Jin: Ecoglass Research Group, Special Division of Green Life Technology, National Institute of Advanced Industrial Science and Technology, AIST Kansai, 1-8-31 Midorigaoka Ikeda, Osaka 563-8577, Japan
Hong Lin: Ecoglass Research Group, Special Division of Green Life Technology, National Institute of Advanced Industrial Science and Technology, AIST Kansai, 1-8-31 Midorigaoka Ikeda, Osaka 563-8577, Japan
Tetsuo Yazawa: Division of Material Engineering, Graduate School of Engineering, Himeji Institute of Technology, 2167 Shosha, Himeji, Hyogo 671-2201, Japan

Surface Review and Letters (SRL), 2003, vol. 10, issue 02n03, 283-288

Abstract: Gas permeability of CO2, N2and He gases through a porous glass membrane of 3.5 nm pore diameter was investigated experimentally. Changes of the gas flow rate under Xe-lamp irradiation have been found. The observed phenomenon is explained by photothermal sorption. Estimation of gas permeability has been carried out. Experimental data of the induced gas permeability are in agreement with the theoretical estimation. A new method for gas separation by time modulation of the membrane temperature is proposed in which temperature modulation occurs by periodical heating of the membrane by the irradiation.

Date: 2003
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DOI: 10.1142/S0218625X03004883

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