抄録
Separation properties of a mordenite membrane for water-methanol-hydrogen mixtures were studied in the temperature range from 423 to 523 K under pressurized conditions. The mordenite membrane was prepared on the outer surface of a porous alumina tubular support by a secondary-growth method. It was found that water was selectively permeated through the membrane. The separation factor of water/hydrogen and water/methanol were 49-156 and 73-101, respectively. Even when only hydrogen was fed at 0.5 MPa, its permeance was as low as 10-9 mol m-2 s-1 Pa-1 up to 493 K, possibly suggesting that water pre-adsorbed in the micropores of mordenite hindered the permeation of hydrogen. The hydrogen permeance dramatically increased to 6.5 × 10-7 mol m-2 s-1 Pa-1 at 503 K and reached to 1.4 × 10-6 mol m-2 s-1 Pa-1 at 523 K because of the formation of cracks in the membrane. However, the membrane was thermally stabilized in the presence of steam and/or methanol.
本文言語 | English |
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ページ(範囲) | 182-187 |
ページ数 | 6 |
ジャーナル | Catalysis Today |
巻 | 132 |
号 | 1-4 |
DOI | |
出版ステータス | Published - 2008 3月 |
ASJC Scopus subject areas
- 触媒
- 化学 (全般)