Method for producing acid gas separation composite membrane, and acid gas separation membrane module
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United States of America Patent
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Aug 1, 2017
Grant Date -
Jan 14, 2016
app pub date -
Sep 23, 2015
filing date -
Mar 29, 2013
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Abstract
Coating a hydrogel-state coating liquid containing at least a hydrophilic compound and an acid gas carrier on one surface of a hydrophobic porous body having three-dimensional network structure formed through intersecting, coupling or branching of a plurality of fibrils, and a large number of pores formed of microscopic interstices divided by the plurality of fibrils to form a facilitated transport membrane thereon. The hydrophobic porous body has an average inter-fibril distance of 0.001 μm or more and 2 μm or less inside a plane in parallel to a surface on which the acid gas separation facilitated transport membrane is formed, an average fibril length of 0.01 μm or more and 2 μm or less inside the plane, and an average inter-fibril distance of 0.001 μm or more and 2 μm or less in a direction perpendicular to the surface.
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