Selective permeation and separation of steam from water-methanol-hydrogen gas mixtures through mordenite membrane

Ken Ichi Sawamura, Tsutomu Shirai, Mitsuko Takada, Yasushi Sekine, Eiichi Kikuchi, Masahiko Matsukata

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)182-187
Number of pages6
JournalCatalysis Today
Volume132
Issue number1-4
DOIs
Publication statusPublished - 2008 Mar 1

Keywords

  • Gas separation
  • Membrane reactor
  • Methanol synthesis
  • Mordenite
  • Zeolite membrane

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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