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Hydrothermally Robust Molecular Sieve Silica for Wet Gas Separation
Author(s) -
Duke M. C.,
da Costa J. C. D.,
Do D. D.,
Gray P. G.,
Lu G. Q.
Publication year - 2006
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.200500456
Subject(s) - materials science , membrane , molecular sieve , chemical engineering , carbonization , gas separation , hydrogen , sieve (category theory) , carbon dioxide , organic chemistry , adsorption , composite material , chemistry , scanning electron microscope , biochemistry , mathematics , combinatorics , engineering
A major challenge in silica membranes for gas separation is to maintain a robust pore structure in the presence of steam. In this work, use of a carbonized template is proposed to reduce damage to the pore structure by inhibiting silica migration along the membrane pore surface. This departs from the conventional wisdom of creating hydrophobic surfaces to achieve hydrostability. The carbonized‐template molecular sieve silica (CTMSS) membranes can then be applied to clean‐energy systems such as hydrogen separation and carbon dioxide sequestration, and membrane reactors where steam is present.